{"title":"Williams AV FM Assistive Listening Systems","description":"\u003cp\u003eWilliams AV FM assistive listening systems for ADA compliance in auditoriums, courtrooms, houses of worship, lecture halls and council chambers. FM is the workhorse technology for venues needing wide coverage without line of sight — the signal passes through walls and reaches every seat, including overflow rooms and lobbies.\u003c\/p\u003e\u003cp\u003eA compliant system needs a transmitter, an antenna suited to the coverage area, and enough receivers to meet the seat-count requirement in the ADA guidelines, plus neck loops for users with telecoil hearing aids. Antenna choice drives coverage more than transmitter power does. Creation Networks designs assistive listening systems to the actual room and occupancy count, handles installation, and provides the signage and documentation inspectors ask for.\u003c\/p\u003e","products":[{"product_id":"williams-sound-fm-558-24-pro-fm-plus-large-area-dual-fm-and-wi-fi-als-with-24-fm-r38","title":"Williams AV FM 558-24 PRO – FM+ Assistive Listening System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-24 PRO is a large-venue assistive listening system built around the FM+ T55C transmitter, which broadcasts program audio over FM and Wi-Fi at the same time. The package supplies 24 PPA R38N body-pack receivers plus professional installation accessories — remote coaxial antenna, rack panel kit, 12-bay chargers, and ADA signage — so AV integrators can deliver ADA-compliant hearing assistance in auditoriums, houses of worship, and government facilities from a single SKU. Listeners without a receiver can stream the same audio to their own phones through the WaveCAST app over the venue's Wi-Fi network.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ T55C transmitter occupies half of a 1RU rack space and is mounted with the included RPK 005 rack panel kit in any standard 19-inch equipment rack. Audio enters through a combination 3-pin XLR \/ 1\/4-inch TRS jack that accepts balanced or unbalanced microphone or line-level signals, with selectable phantom power for condenser microphones. Onboard DSP provides selectable compression (1:1, 1.5:1, or 2:1) and adjustable high-pass and low-pass filtering, shaping the signal for maximum speech intelligibility. Configuration is handled on the 3.12-inch OLED front-panel display or remotely through the transmitter's hosted web page, and the unit can be managed by third-party room control systems over its RJ-45 Ethernet connection.\u003c\/p\u003e\u003cp\u003eOn the listening side, each of the 24 PPA R38N receivers offers a 1-inch OLED display, menu-based selection across 17 wideband FM channels (72.1–75.9 MHz), and channel lock to prevent accidental retuning. Receivers run up to 50 hours on AA alkaline cells or 32 hours on the included NiMH rechargeable batteries, which charge in the two CHG 3512 12-bay drop-in chargers supplied with the system. Twenty-four EAR 022 surround earphones and six NKL 001 neckloops accommodate listeners with and without telecoil hearing aids, while the ANT 005 remote coaxial antenna extends FM coverage up to 1,000 feet. The IDP 008 ADA wall plaque completes the compliance picture at the venue entrance.\u003c\/p\u003e\u003cp\u003eIf your audio infrastructure runs on Dante, step up to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-24-pro-d-fm-pro-system-package-24-r38-receivers-dante\"\u003eFM 558-24 PRO D with Dante input\u003c\/a\u003e. Explore more options in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimultaneous FM and Wi-Fi Broadcast\u003c\/strong\u003e — A single FM+ T55C transmitter serves dedicated FM receivers and unlimited smartphone listeners on the WaveCAST app at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-Receiver Fleet\u003c\/strong\u003e — The package includes 24 PPA R38N OLED receivers with 17 selectable wideband channels and channel lock for managed deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Bay Drop-In Charging\u003c\/strong\u003e — Two CHG 3512 chargers and 24 sets of NiMH rechargeable batteries keep the full receiver fleet charged between services or sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Install Accessories\u003c\/strong\u003e — The ANT 005 remote coaxial antenna, RPK 005 rack panel kit, and IDP 008 ADA wall plaque are included for a complete commercial installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression and filter settings tailor the audio for hearing-impaired listeners in speech or music applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Support\u003c\/strong\u003e — Six NKL 001 neckloops couple receiver audio magnetically to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Remote Control\u003c\/strong\u003e — The hosted web interface over RJ-45 Ethernet enables remote monitoring, configuration, and integration with room control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong FM Range\u003c\/strong\u003e — FM coverage extends up to 1,000 feet with the included antenna, covering large seating areas without repeaters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ T55C, dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e24x PPA R38N body-pack, 1\" OLED display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, balanced or unbalanced mic\/line, selectable phantom power (14.4 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page for remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU high, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e(1) FM T55C transmitter, (24) PPA R38N receivers, (24) EAR 022 earphones, (6) NKL 001 neckloops, (2) CHG 3512 12-bay chargers, (24) BAT 026-2 NiMH batteries, (1) ANT 005 antenna, (1) IDP 008 ADA plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat audio sources can feed the transmitter?\u003c\/h3\u003e\u003cp\u003eThe FM+ T55C accepts a balanced or unbalanced microphone or line-level signal through its XLR\/TRS combo input, with selectable phantom power. Typical sources include a DSP output, mixer bus, or paging system line out.\u003c\/p\u003e\u003ch3\u003eHow many people can use this system at once?\u003c\/h3\u003e\u003cp\u003eAll 24 included R38N receivers can operate simultaneously, and the Wi-Fi stream supports an unlimited number of additional listeners using the WaveCAST app on their own devices.\u003c\/p\u003e\u003ch3\u003eIs professional installation required?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires the transmitter to be professionally installed and used with approved FCC 15.203 compliant antennas, such as the included ANT 005 remote coaxial antenna.\u003c\/p\u003e\u003ch3\u003eDoes the Wi-Fi side need its own network hardware?\u003c\/h3\u003e\u003cp\u003eThe FM+ connects to your existing facility Wi-Fi network via Ethernet; it does not generate a wireless network on its own. Coordinate with IT to confirm network capacity for streaming listeners.\u003c\/p\u003e\u003ch3\u003eCan this system support more receivers later?\u003c\/h3\u003e\u003cp\u003eYes. Additional PPA R38N receivers can be added at any time, and the system supports any number of FM listeners on the selected channel.\u003c\/p\u003e\u003ch3\u003eWhat does the warranty cover?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a 2-year parts and labor warranty; the R38N receivers carry Williams AV's Lifetime PLUS Limited Warranty, with 90 days of coverage on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43733426143468,"sku":"FM 558-24 PRO","price":9780.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-24-pro-fm-plus-large-area-dual-fm-and-wi-fi-als-with-24-fm-r38-creation-networks-63887.jpg?v=1757912014"},{"product_id":"williams-sound-fm-557-12-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37","title":"Williams AV FM 557-12 – Dual FM and Wi-Fi Hearing Assistance, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 is a dual FM and Wi-Fi hearing assistance system that gives mid-size venues a direct path to ADA-compliant assistive listening. The FM+ T55 transmitter broadcasts on the 72 MHz FM band for the twelve included PPA R37N body-pack receivers while simultaneously streaming the same audio over the venue's Wi-Fi network for smartphone listeners. For facilities replacing aging FM 457 hardware or adding hearing assistance to a sanctuary, theater, or hearing room, this package delivers transmitter, receivers, earphones, neckloops, and ADA signage in one order.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe T55 transmitter occupies half a rack space and replaced the earlier T45 with substantially more capability: DSP audio processing with selectable compression and filtering, an OLED display for menu-driven setup, a hosted web page for remote configuration, and Telnet control over Ethernet for tie-in to room control systems. Audio sources connect through a combination XLR\/1\/4-inch input supporting balanced or unbalanced microphone or line-level signals with selectable phantom power — typically a spare DSP or mixer output in a commercial installation. Each of the twelve PPA R37N receivers offers seek-button access to 17 wideband channels between 72.1 and 75.9 MHz, channel lock to hold the house frequency, and a 3.5 mm output that drives the included EAR 022 surround earphones or the three NKL 001 neckloops supplied for telecoil hearing aid users. Receivers run approximately 50 hours on the included AA alkaline batteries and accept NiMH rechargeables with optional drop-in chargers. Because the FM broadcast supports unlimited listeners, the system scales simply by adding receivers — there is no license, channel pairing, or head-end change involved. This standard package leaves antenna selection and rack mounting to the integrator; FCC rules require professional installation with an approved FCC 15.203-compliant antenna such as the ANT 005. For a version with the antenna, charger, batteries, and rack kit bundled in, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-12-pro-fm-pro-system-package-12-r37-receivers\"\u003eFM 557-12 PRO package\u003c\/a\u003e, or browse our full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM and Wi-Fi from One Chassis\u003c\/strong\u003e — The T55 transmitter feeds dedicated FM receivers and smartphone listeners on the venue network simultaneously, with no second transmitter required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwelve Body-Pack Receivers\u003c\/strong\u003e — PPA R37N receivers with EAR 022 surround earphones provide the hardware ADA guidelines expect mid-size venues to stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e457-System Replacement Path\u003c\/strong\u003e — The FM+ platform directly replaces legacy Williams FM 457 systems while preserving the familiar 72 MHz receiver band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Neckloops\u003c\/strong\u003e — Three NKL 001 neckloops couple audio magnetically to hearing aids and cochlear implants with telecoils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeek-Button Tuning with Channel Lock\u003c\/strong\u003e — Receivers access 17 wideband channels and can be locked to the assigned frequency for the duration of an event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50-Hour Receiver Runtime\u003c\/strong\u003e — Two AA alkaline batteries, included, power each receiver for roughly 50 hours of listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression and high\/low-pass filtering at the transmitter improve intelligibility for hearing-impaired listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Configuration and Control\u003c\/strong\u003e — A hosted web page and Telnet over Ethernet enable remote setup, monitoring, and control-system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Plaque Included\u003c\/strong\u003e — The IDP 008 wall sign informs visitors that assistive listening devices are available on request.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (12) PPA R37N receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) IDP 008 ADA wall plaque; AA alkaline batteries (BAT 001-2) included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (antenna sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (optional RPK 005\/RPK 006 kits)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Frequency Response\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs this a direct replacement for an FM 457 system?\u003c\/h3\u003e\u003cp\u003eYes. Williams AV positioned the FM+ 557 family as the replacement for its 457 systems. It keeps 72 MHz-band FM operation — so the receiver experience is familiar — and adds Wi-Fi streaming for smartphone listeners at close to the cost of the older FM-only hardware.\u003c\/p\u003e\u003ch3\u003eWhat do I still need to complete the installation?\u003c\/h3\u003e\u003cp\u003eAn FCC 15.203-compliant antenna (such as the ANT 005) and, if rack mounting, an RPK 005 or RPK 006 panel kit. The FCC requires professional installation. If you prefer those items bundled with a charger and rechargeable batteries, choose the FM 557-12 PRO package instead.\u003c\/p\u003e\u003ch3\u003eHow do smartphone users hear the broadcast?\u003c\/h3\u003e\u003cp\u003eThe transmitter connects to the venue's existing Wi-Fi network and streams the program audio to listeners' phones. It does not generate its own wireless network, so functioning venue Wi-Fi must be available.\u003c\/p\u003e\u003ch3\u003eCan hearing aid wearers use this system without earphones?\u003c\/h3\u003e\u003cp\u003eYes. The three included NKL 001 neckloops plug into any R37N receiver and couple the audio magnetically to telecoil-equipped hearing aids and cochlear implants.\u003c\/p\u003e\u003ch3\u003eHow many listeners can the system support?\u003c\/h3\u003e\u003cp\u003eThe FM broadcast is unlimited — every receiver in range on the assigned channel hears the feed, and Wi-Fi listeners add no RF load. Buy additional PPA R37N receivers as needed.\u003c\/p\u003e\u003ch3\u003eWhat warranty covers the equipment?\u003c\/h3\u003e\u003cp\u003eTwo years parts and labor on the transmitter, and a Lifetime PLUS limited warranty on the R37N receivers (earphones, headphones, and batteries excluded).\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43733427257580,"sku":"FM 557-12","price":3590.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-12-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37-creation-networks-26775.jpg?v=1757912027"},{"product_id":"williams-sound-fm-557-12-pro-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37","title":"Williams AV FM 557-12 PRO – Turnkey Assistive Listening Kit, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 PRO is a turnkey assistive listening kit that equips a mid-size venue with everything required for an ADA-compliant hearing assistance installation in one purchase. The FM+ T55 transmitter broadcasts simultaneously over FM and the building's Wi-Fi network, 12 PPA R37N body-pack receivers serve listeners directly, and the PRO accessory set — 12-bay charger, rechargeable batteries, remote coaxial antenna, and rack panel kit — covers the installation details that base packages leave out. It is a practical, single-SKU answer for AV integrators specifying hearing assistance in commercial meeting spaces and worship venues.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eWilliams AV designed the FM+ platform to replace its long-standing FM 457 systems, keeping the dependable 72 MHz FM broadcast that body-pack receivers rely on while adding Wi-Fi streaming so attendees can also listen on their own phones — all from one half-rack transmitter at close to traditional FM system cost. The T55 transmitter takes balanced or unbalanced microphone or line-level audio through a combination XLR\/1\/4-inch input with selectable phantom power, applies DSP-based compression and filtering tuned for speech, and confirms levels on a 10-segment LED meter. Operators work from a 3.12-inch OLED display, while a hosted web page and Telnet-over-Ethernet commands give facility staff and control systems remote access for monitoring and adjustment. The dozen PPA R37N receivers each access 17 wideband channels between 72.1 and 75.9 MHz via a seek button inside the battery compartment, support channel lock to prevent accidental retuning, and pair with the included EAR 022 surround earphones; three NKL 001 neckloops couple audio to telecoil-equipped hearing aids. The CHG 3512 12-bay charger and 12 NiMH battery sets sustain the fleet at roughly 32 hours per charge. The ANT 005 remote antenna reaches up to 1,000 feet of transmission range, and the RPK 005 kit racks the transmitter in one EIA space. FCC rules require professional installation with a compliant antenna. Venues planning a Dante audio backbone should look at the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-12-pro-d-fm-pro-system-package-12-r37-receivers-dante\"\u003eFM 557-12 PRO D Dante variant\u003c\/a\u003e; the full product family lives in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-Box FM and Wi-Fi Broadcast\u003c\/strong\u003e — The T55 transmitter delivers both transmission types simultaneously, serving hardware receivers and smartphone listeners from one rack unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnkey PRO Accessory Set\u003c\/strong\u003e — Charger, rechargeable batteries, remote antenna, and rack panel kit arrive in the box, so no separate accessory orders are needed for installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwelve R37N Receivers\u003c\/strong\u003e — Body-pack receivers with surround earphones meet mid-size venue ADA receiver requirements and carry a Lifetime PLUS limited warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Lock Protection\u003c\/strong\u003e — Receivers can be locked to the house channel, preventing audience members from accidentally retuning during an event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Fleet Management\u003c\/strong\u003e — The CHG 3512 12-bay drop-in charger restores all twelve receivers overnight with no battery swapping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeech-First DSP\u003c\/strong\u003e — Selectable compression ratios and high\/low-pass filtering shape the broadcast for intelligibility with hearing loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Management\u003c\/strong\u003e — The hosted web page and Telnet control over Ethernet support off-rack monitoring and third-party control integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Range\u003c\/strong\u003e — The ANT 005 remote coaxial antenna covers large floor plates and overflow spaces from a single transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque publicly identifies the venue as equipped with assistive listening.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (12) PPA R37N receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) CHG 3512 12-bay charger, (12) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Channels\u003c\/td\u003e\n\u003ctd\u003e17, accessed via seek button in battery compartment; channel lock capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on AA NiMH rechargeable; approx. 50 hrs on AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat makes this a turnkey kit?\u003c\/h3\u003e\u003cp\u003eEverything an installer needs ships together: transmitter, twelve receivers with earphones and neckloops, a 12-bay charger with rechargeable batteries, the remote coaxial antenna, the rack panel kit, and ADA signage. No add-on orders are required to commission the system.\u003c\/p\u003e\u003ch3\u003eHow does the transmitter connect to my existing sound system?\u003c\/h3\u003e\u003cp\u003eFeed it a line-level output from your mixer or DSP via the combination XLR\/1\/4-inch input, or connect a microphone directly with selectable phantom power. Input gain adjusts in 1 dB steps from the menu.\u003c\/p\u003e\u003ch3\u003eCan the Wi-Fi stream and FM broadcast run different audio?\u003c\/h3\u003e\u003cp\u003eNo — both carry the same program feed. The dual transmission simply gives listeners a choice between a supplied R37N receiver and their own smartphone on the venue Wi-Fi network.\u003c\/p\u003e\u003ch3\u003eHow long do receivers run between charges?\u003c\/h3\u003e\u003cp\u003eAbout 32 hours on the included AA NiMH rechargeable batteries, or roughly 50 hours if you substitute disposable AA alkaline cells — enough for a full week of typical service schedules.\u003c\/p\u003e\u003ch3\u003eDoes installation require an outside contractor?\u003c\/h3\u003e\u003cp\u003eThe FCC requires professional installation with an approved FCC 15.203-compliant antenna such as the included ANT 005. Many AV integrators handle this as part of a larger sound system project.\u003c\/p\u003e\u003ch3\u003eWhat support and warranty come with the system?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a two-year parts and labor warranty; R37N receivers are covered by a Lifetime PLUS limited warranty, with earphones, headphones, and batteries excluded.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43733427749100,"sku":"FM 557-12 PRO","price":4805.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-12-pro-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37-creation-networks-10903.jpg?v=1757912038"},{"product_id":"williams-sound-fm-557-12-pro-d-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37","title":"Williams AV FM 557-12 PRO D – Dante-Enabled Hearing Assistance System, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 PRO D brings Dante network audio into a mid-size hearing assistance system, packaging the FM+ T55 D transmitter with 12 R37 FM receivers and a full set of professional installation accessories. As the successor to the legacy FM 457 systems, the FM+ platform broadcasts over FM and the venue Wi-Fi network from a single half-rack chassis, giving courtrooms, council chambers, theaters, and training facilities an ADA-compliant assistive listening solution that drops cleanly into a networked AV design.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eWhere most assistive listening transmitters terminate an analog feed, the T55 D in this package takes its program audio straight off the Dante network — a meaningful simplification in installations already running a Dante-enabled DSP, since the assistive listening rack needs only a network drop. An analog combination XLR\/1\/4-inch input remains available for balanced mic or line-level sources with selectable phantom power, so the transmitter works in hybrid signal chains as well. Internal DSP applies selectable compression and high-pass\/low-pass filtering, shaping the broadcast for maximum speech clarity. Operators configure the unit from its OLED front panel or the hosted web page, and integrators can drive it from third-party control systems via Telnet over the rear Ethernet port. The 12 included R37 receivers seek across 17 wideband channels between 72.1 and 75.9 MHz, and the package supplies everything needed to manage them day to day: a CHG 3512 12-bay drop-in charger, 12 sets of AA NiMH rechargeable batteries, surround earphones for each receiver, and three NKL 001 neckloops for telecoil hearing aid users. The ANT 005 remote coaxial antenna extends range up to 1,000 feet, the RPK 005 kit mounts the transmitter in a 19-inch rack, and the IDP 008 plaque posts ADA hearing assistance signage at the door. The FCC requires professional installation with an approved antenna, and Wi-Fi streaming uses the venue's existing wireless network. For projects that do not need Dante, the analog \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-12-pro-fm-pro-system-package-12-r37-receivers\"\u003eFM 557-12 PRO package\u003c\/a\u003e offers the same receiver count, and the broader \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e covers spare receivers and accessories.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Audio Networking\u003c\/strong\u003e — The T55 D subscribes to a Dante flow from the house DSP or mixer, removing analog cabling between the audio system and the assistive listening transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM Plus Wi-Fi Delivery\u003c\/strong\u003e — One transmitter feeds the 12 hardware receivers over FM while streaming identical audio to smartphones on the venue network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid-Size Receiver Package\u003c\/strong\u003e — Twelve R37 body-pack receivers with earphones match the ADA receiver requirements of mid-capacity assembly spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Bay Drop-In Charging\u003c\/strong\u003e — The included CHG 3512 charger and NiMH battery sets keep the entire receiver inventory charged from a single station.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelnet Control Integration\u003c\/strong\u003e — Ethernet-based Telnet commands let Crestron, Extron, or other control processors manage the transmitter remotely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeech-Optimized DSP\u003c\/strong\u003e — Adjustable compression ratios and filter frequencies tailor the audio for listeners with hearing loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Coverage\u003c\/strong\u003e — The ANT 005 remote coaxial antenna provides large-area transmission range for full-venue coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Ready Hardware\u003c\/strong\u003e — The RPK 005 kit mounts the half-rack transmitter in one EIA rack space; a second unit can share the space with the optional RPK 006.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime Receiver Warranty\u003c\/strong\u003e — R37 receivers carry a Lifetime PLUS limited warranty, protecting the largest recurring investment in the system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 D transmitter, (12) FM R37 receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) CHG 3512 12-bay charger, (12) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Audio\u003c\/td\u003e\n\u003ctd\u003eDante input (FM T55 D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Audio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on AA NiMH rechargeable; approx. 50 hrs on AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37 receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhy choose the Dante version over the standard FM 557-12 PRO?\u003c\/h3\u003e\u003cp\u003eIf the venue's audio backbone runs on Dante, the T55 D transmitter receives program audio over the network with no DAC, analog tie line, or extra DSP output card — cleaner signal flow and simpler rack wiring. Analog-only facilities can use the standard PRO version instead.\u003c\/p\u003e\u003ch3\u003eHow is the system commissioned on a network?\u003c\/h3\u003e\u003cp\u003eThe transmitter has a rear RJ-45 port for the control network and joins the venue Wi-Fi for audio streaming. Configuration happens through the front-panel OLED menu or the hosted web page, and Williams AV's WaveCAST networking guide documents recommended network settings.\u003c\/p\u003e\u003ch3\u003eAre the receivers rechargeable out of the box?\u003c\/h3\u003e\u003cp\u003eYes. Twelve AA NiMH battery sets and a CHG 3512 12-bay drop-in charger are included, giving each R37 receiver roughly 32 hours of runtime per charge. The receivers also accept standard AA alkaline cells for about 50 hours.\u003c\/p\u003e\u003ch3\u003eWhat does ADA compliance involve for this system?\u003c\/h3\u003e\u003cp\u003eThe package aligns with 2010 ADA guidelines for hearing assistance: it provides body-pack receivers, includes neckloops for telecoil hearing aid coupling, and ships with the IDP 008 wall plaque to publicize availability of assistive listening.\u003c\/p\u003e\u003ch3\u003eDoes the FCC restrict how this is installed?\u003c\/h3\u003e\u003cp\u003eYes. The transmitter must be professionally installed with an approved FCC 15.203-compliant antenna; the included ANT 005 qualifies. Williams AV's Antenna Selection Install Guide lists all compliant options.\u003c\/p\u003e\u003ch3\u003eCan I add more receivers later?\u003c\/h3\u003e\u003cp\u003eYes. The FM broadcast supports unlimited listeners, so additional R37 receivers can be purchased individually as audience needs grow, with no transmitter changes required.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43733428175084,"sku":"FM 557-12 PRO D","price":5060.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-soundfm-557-12-pro-d-fm-plus-large-area-dual-fm-and-wi-fi-als-with-12-fm-r37-creation-networks-78504.jpg?v=1757912043"},{"product_id":"williams-sound-fm-558-24-pro-d-fm-pro-system-package-24-r38-receivers-dante","title":"Williams AV FM 558-24 PRO D – Dante FM+ Assistive Listening System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-24 PRO D is a large-area assistive listening system that pairs a Dante-enabled FM+ T55C D transmitter with 24 PPA R38N receivers and a complete set of professional installation accessories. Built for ADA compliance in auditoriums, performing arts centers, and large houses of worship, it broadcasts the same program audio simultaneously over FM (72.1–75.9 MHz) and Wi-Fi, so attendees can listen on a dedicated FM receiver or their own smartphone via the WaveCAST app. The Dante input lets integrators pull audio directly from a networked audio system without analog conversion, making this the top-tier FM 558 package for modern AV-over-IP installations.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eAt the heart of the system is the FM+ T55C D transmitter, a half-rack, 1RU device that transmits dual FM and Wi-Fi audio from a single chassis. The Dante network audio input accepts a channel straight from a Dante-enabled DSP, mixer, or audio processor over the facility's existing Ethernet infrastructure, while a combination XLR\/1\/4-inch TRS input with selectable phantom power covers analog microphone or line-level sources. DSP-based audio processing with selectable compression and high-pass\/low-pass filtering keeps speech intelligible for hearing-impaired listeners. A 3.12-inch OLED display and a hosted web page provide local and remote configuration, and the transmitter integrates with third-party room control systems for managed operation.\u003c\/p\u003e\u003cp\u003eThe 24 included PPA R38N body-pack receivers each feature a 1-inch OLED screen, menu-based access to all 17 wideband channels, channel lock, and up to 50 hours of runtime on alkaline batteries or 32 hours on the included NiMH rechargeables. Two CHG 3512 12-bay drop-in chargers keep the entire receiver fleet charged and staged, and six NKL 001 neckloops serve listeners with telecoil-equipped hearing aids. The PRO accessory kit rounds out the deployment with 24 EAR 022 surround earphones, an ANT 005 remote coaxial antenna for up to 1,000 feet of FM coverage, an IDP 008 ADA wall plaque, and an RPK 005 rack panel kit for mounting the transmitter in a standard 19-inch equipment rack. Because the Wi-Fi stream supports an unlimited number of app listeners, capacity scales beyond the physical receiver count without additional hardware.\u003c\/p\u003e\u003cp\u003eFor venues that do not require Dante, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-24-pro-fm-pro-system-package-24-r38-receivers\"\u003eFM 558-24 PRO analog package\u003c\/a\u003e, or browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV assistive listening collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Network Audio Input\u003c\/strong\u003e — The FM+ T55C D transmitter accepts program audio directly from a Dante-enabled DSP or console, eliminating analog tie lines in networked AV systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmission\u003c\/strong\u003e — One transmitter broadcasts simultaneously over 72.1–75.9 MHz FM and the venue Wi-Fi network, serving both dedicated receivers and the WaveCAST smartphone app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 R38N OLED Receivers\u003c\/strong\u003e — Each body-pack receiver provides menu-driven access to 17 wideband channels with channel lock and a bright 1-inch OLED display for easy tuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Wi-Fi Listeners\u003c\/strong\u003e — The Wi-Fi audio stream supports any number of app-based listeners, so coverage scales past the 24 hardware receivers at no added cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete PRO Installation Kit\u003c\/strong\u003e — The package includes an ANT 005 remote coaxial antenna, RPK 005 rack panel kit, and IDP 008 ADA wall plaque for a turnkey professional install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFleet Charging Included\u003c\/strong\u003e — Two CHG 3512 12-bay drop-in chargers and 24 sets of NiMH rechargeable batteries keep all receivers ready between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression ratios and adjustable high-pass\/low-pass filters optimize speech clarity for assistive listening applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Management\u003c\/strong\u003e — A hosted web interface and third-party room control compatibility allow IT and AV staff to monitor and adjust the transmitter over the network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 1,000 ft FM Range\u003c\/strong\u003e — With the included ANT 005 antenna, FM coverage reaches up to 1,000 feet, suitable for the largest seating areas.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eBroadcast studio\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ T55C D (Dante-enabled)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e24x PPA R38N body-pack, 1\" OLED display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Inputs\u003c\/th\u003e\n\u003ctd\u003eDante network audio; combination 3-pin XLR \/ 1\/4\" TRS, mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T, CAT 5e up to 328 ft; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU high, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e(1) FM T55C D transmitter, (24) PPA R38N receivers, (24) EAR 022 earphones, (6) NKL 001 neckloops, (2) CHG 3512 12-bay chargers, (24) BAT 026-2 NiMH batteries, (1) ANT 005 antenna, (1) IDP 008 ADA plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does the Dante input integrate with an existing AV system?\u003c\/h3\u003e\u003cp\u003eThe FM+ T55C D appears as a Dante receive device on the audio network. Using Dante Controller, you route a channel from any Dante-enabled DSP, console, or matrix directly to the transmitter — no analog wiring or D\/A conversion required.\u003c\/p\u003e\u003ch3\u003eDoes this system meet ADA assistive listening requirements?\u003c\/h3\u003e\u003cp\u003eYes. The system provides FM receivers with neckloops for hearing aid telecoil coupling, and the included IDP 008 wall plaque signals assistive listening availability as required for ADA-compliant venues. Receiver counts should be verified against ADA seating-capacity tables for your venue.\u003c\/p\u003e\u003ch3\u003eDoes the transmitter create its own Wi-Fi network?\u003c\/h3\u003e\u003cp\u003eNo. The FM+ connects to the facility's existing Wi-Fi network via Ethernet; the wireless network must be in place before Wi-Fi audio streaming can be used. FM transmission works independently of the network.\u003c\/p\u003e\u003ch3\u003eAre there any installation requirements for the FM antenna?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to be professionally installed with approved FCC 15.203 compliant antennas such as the included ANT 005. Williams AV's Antenna Selection Install Guide lists compliant options.\u003c\/p\u003e\u003ch3\u003eCan more than 24 people listen at once?\u003c\/h3\u003e\u003cp\u003eYes. The Wi-Fi stream supports an unlimited number of listeners through the WaveCAST app, and additional PPA R38N receivers can be added to the FM side at any time.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to this system?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a 2-year parts and labor warranty, and the R38N receivers are covered by Williams AV's Lifetime PLUS Limited Warranty (90 days on most accessories).\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43733440790764,"sku":"FM 558-24 PRO D","price":10025.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-24-pro-d-fm-pro-system-package-24-r38-receivers-and-dante-creation-networks-45370.jpg?v=1757912056"},{"product_id":"williams-sound-rpk-005-rack-panel-kit-for-1-2-space-products","title":"Williams AV RPK 005 – Single Rack Panel Kit for Half-Rack Units","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Williams AV RPK 005 is a rack panel kit that mounts one half-rack-width transmitter or modulator in a single IEC rack space. It is the specified rack-mount hardware for WaveCAST, FM+ (FM Plus), and MOD 232 units, turning a desktop-format transmitter into a properly secured rack component. AV integrators include the RPK 005 on any project where assistive listening head-end equipment lives in an equipment rack.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eWilliams AV builds its WaveCAST Wi-Fi transmitters, FM+ dual FM\/Wi-Fi transmitters, and MOD 232 modulator in a half-rack (1\/2 space) chassis, which means they need dedicated mounting hardware to install cleanly alongside standard 19-inch equipment. The RPK 005 provides the rack ears and blank panel section to secure a single unit in one rack space (1RU), filling the unused half of the row for a finished appearance. Rack-mounting the transmitter rather than shelving it improves cable strain relief, keeps the unit ventilated in a defined position, and protects front-panel controls in shared equipment rooms. For installations with two half-rack units, the companion RPK 006 dual kit mounts a pair side by side in the same single space. The RPK 005 is the right specification for head-end racks built around transmitters like the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-wf-t8-wavecast-eight\"\u003eWaveCAST EIGHT\u003c\/a\u003e; see our \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-rpk-006-dual-rack-mount-kit-for-1-2-space-products\"\u003eRPK 006 dual rack-mount kit\u003c\/a\u003e when racking two units together.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle-Unit Rack Mounting\u003c\/strong\u003e — Secures one half-rack transmitter or modulator in one standard IEC rack space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e — Fits WaveCAST, FM+ (FM Plus), and MOD 232 half-rack chassis from Williams AV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Finish\u003c\/strong\u003e — Fills the unused half of the rack row for a clean, integrator-grade head-end appearance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Serviceability\u003c\/strong\u003e — Fixes the unit in a defined rack position, protecting controls and simplifying cable management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRPK 005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eMounts one 1\/2-space product in one IEC rack space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWaveCAST, FM Plus (FM+), MOD 232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelated Model\u003c\/td\u003e\n\u003ctd\u003eRPK 006 — mounts two 1\/2-space products side by side in one rack space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43738723352812,"sku":"RPK 005","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-rpk-005-rack-panel-kit-for-12-space-products-creation-networks-93062.png?v=1757912203"},{"product_id":"williams-sound-rpk-006-dual-rack-mount-kit-for-1-2-space-products","title":"Williams AV RPK 006 – Dual Rack-Mount Kit for Half-Rack Units","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Williams AV RPK 006 is a dual rack panel kit that mounts two half-rack transmitters or modulators side by side in a single IEC rack space. It is the specified hardware for racking pairs of WaveCAST, FM+ (FM Plus), or MOD 232 units, maximizing rack density in assistive listening head-ends. Integrators building multi-channel systems use the RPK 006 to consolidate two transmitters into one rack unit.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eMulti-channel assistive listening and audio distribution projects often deploy transmitters in pairs — two WaveCAST channels for adjacent rooms, an FM+ unit alongside a MOD 232 modulator, or redundant transmitters for a critical venue. The RPK 006 joins two half-rack chassis into a single 19-inch rack assembly: included linking bars fasten the two devices together through their adjoining sides, while the rack ears secure the outer side of each device to the rack rails. The result is a rigid, one-rack-space assembly with both front panels accessible and no wasted vertical space. Compared with mounting each unit separately using two single kits, the dual kit halves the rack space consumed and produces a cleaner head-end layout. For a single half-rack device, specify the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-rpk-005-rack-panel-kit-for-1-2-space-products\"\u003eRPK 005 single rack panel kit\u003c\/a\u003e instead. Compatible transmitters such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-wf-t8-wavecast-eight\"\u003eWaveCAST EIGHT\u003c\/a\u003e and the full FM+ line are available from Creation Networks.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Units in One Rack Space\u003c\/strong\u003e — Mounts a pair of half-rack transmitters or modulators side by side in a single IEC rack space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinking Bars Included\u003c\/strong\u003e — Supplied linking bars fasten the two devices together into one rigid assembly before racking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Rack Ears\u003c\/strong\u003e — Ears fasten the outer side of each device to the rack rails for a stable, serviceable installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e — Fits WaveCAST, FM Plus (FM+), and MOD 232 half-rack chassis from Williams AV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Rack Density\u003c\/strong\u003e — Halves the rack space required versus mounting two units individually, freeing room in crowded head-ends.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRPK 006\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eMounts two 1\/2-space products side by side in one IEC rack space\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eLinking bars and rack ears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWaveCAST, FM Plus (FM+), MOD 232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43738724401388,"sku":"RPK 006","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-rpk-006-dual-rack-mount-kit-for-12-space-products-creation-networks-72183.png?v=1757912204"},{"product_id":"williams-sound-tfp-062-power-supply-for-wavecast-and-fm-systems","title":"Williams AV TFP 062 – Power Supply for WaveCAST and FM+","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Williams AV TFP 062 is the factory replacement power supply for WaveCAST, WaveCAST EIGHT, and FM+ assistive listening transmitters. It delivers regulated 24 VDC at 750 mA from a universal 100–240 VAC input, making it suitable for rack installations worldwide. AV integrators and facilities managers keep the TFP 062 on hand as a spare to minimize downtime in commercial assistive listening systems.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003ePower supplies are the most common field-replaceable component in any installed AV system, and sourcing the correct vendor-specified unit matters. The TFP 062 is the exact supply Williams AV ships with its WaveCAST Wi-Fi audio transmitters, the eight-channel WaveCAST EIGHT, and the FM+ dual FM\/Wi-Fi transmitter line, so output voltage, current rating, and connector polarity are guaranteed to match. The 18 W desktop-style supply uses a detachable IEC line cord, which simplifies cable management inside equipment racks and allows region-specific cords to be substituted for international deployments. Its 2.5 mm ID center-positive barrel connector mates directly with the DC input on compatible transmitters. Because the input accepts 100–240 VAC at 50\/60 Hz, a single SKU covers both domestic and international projects. Use it to replace a failed unit, to power a transmitter relocated to a second rack, or to stock service inventory for venues running multiple assistive listening channels. It pairs with transmitters such as the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-wf-t8-wavecast-eight\"\u003eWaveCAST EIGHT (WF T8)\u003c\/a\u003e, and you can browse the full line of transmitters, receivers, and accessories in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Replacement\u003c\/strong\u003e — Matches the factory power supply for WaveCAST, WaveCAST EIGHT, and FM+ transmitters, so electrical compatibility is assured.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Input\u003c\/strong\u003e — Accepts 100–240 VAC at 50\/60 Hz, allowing the same unit to be deployed in any region with the appropriate IEC line cord.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegulated 24 VDC Output\u003c\/strong\u003e — Supplies 24 VDC at 750 mA (18 W) to meet the full power demand of compatible transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetachable IEC Line Cord\u003c\/strong\u003e — Simplifies rack cable management and lets installers substitute country-specific power cords.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter-Positive Barrel Connector\u003c\/strong\u003e — 2.5 mm ID center-positive plug mates directly with the DC input on compatible Williams AV hardware.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eTFP 062\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e100–240 VAC, 50\/60 Hz, IEC line cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e24 VDC, 750 mA (18 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e2.5 mm ID center-positive barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eWaveCAST, WaveCAST EIGHT, FM+ systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43738724565228,"sku":"TFP 062","price":76.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-tfp-062-power-supply-for-wavecast-and-fm-systems-creation-networks-58839.png?v=1757912206"},{"product_id":"williams-sound-fm-t55-fm-assistive-listening-system","title":"Williams Sound FM T55 FM+ Assistive Listening System (Discontinued)","description":"\u003cdiv class=\"elementor-element elementor-element-365db01 elementor-widget elementor-widget-woocommerce-product-content\" data-id=\"365db01\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-content.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eThe FM+ integrates professional WaveCAST Wi-Fi audio server technology into a Williams AV FM assistive listening system. End users can now listen with either an FM receiver or with their own smartphone (via the \u003ca href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\" data-mce-href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\"\u003eWaveCAST Receiver App\u003c\/a\u003e). Along with this flexibility comes exceptional audio quality, as the FM+ is built on a professional digital audio (DSP) platform.\u003c\/p\u003e\n\u003cp\u003eThe FM+ is designed to support those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity is also available for those who want a more traditional assistive listening system with a dedicated FM receiver and headset. Venues no longer need to choose between providing FM or Wi-Fi assistive listening systems. FM+ supports both the new iOS and Android \u003ca href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\" data-mce-href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\"\u003eWaveCAST Receiver Apps\u003c\/a\u003e — in addition to all of the current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.\u003c\/p\u003e\n\u003cp\u003eMost settings can be changed via the front panel interface, or the hosted web interface. A remote programming guide is available upon request.\u003c\/p\u003e\n\u003cp\u003eThe FM+ uses the WaveCAST app to provide an easy-to-use, intuitive user interface. It is available in iOS or Android. Listeners easily select channel and volume level once their personal device is connected to the Wi-Fi network. The app does not work on FM Broadcasts.\u003c\/p\u003e\n\u003cp\u003eWilliams Sound is ready to revolutionize the world of assistive listening with the introduction of FM Plus -- the industry’s first dual-transmission system able to broadcast both FM and Wi-Fi audio from a single device.\u003cbr\u003eOften, the integrator’s most difficult choice when designing an assistive listening system is deciding between an FM or Wi-Fi solution for their customer. With FM Plus, the customer gets both for little more than the cost of an FM-only solution. The FM Plus integrates the new WaveCAST Wi-Fi audio server technology into a Williams Sound FM assistive listening system. End users can now listen with either an FM receiver or with their own smartphone (via the WaveCAST Listening App). With this flexibility comes exceptional audio quality, as the FM Plus is built on a professional digital audio (DSP) platform. In addition, its optional Dante interface provides integrators with a full digital audio networking solution. FM Plus is designed for those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity is also available for those who want a more traditional assistive listening system with a\u003cbr\u003ededicated FM receiver and headset. FM Plus supports both the new iOS and Android WaveCAST Apps -- in addition to all current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.\u003cbr\u003e\u003cstrong\u003eSYSTEM FEATURES\u003c\/strong\u003e\u003cbr\u003e· Professional audio inputs: 1\/4”\/XLR,\u003cbr\u003ephantom power, line level output jack.\u003cbr\u003e· Audio presets -- hearing assistance,\u003cbr\u003emusic, voice and custom\u003cbr\u003e· 16-bit DAC provides 48Khz sample rate\u003cbr\u003e· 10 segment LED bar graph\u003cbr\u003e· Optional Dante input\u003cbr\u003e\u003cstrong\u003eWI-FI FEATURES\u003c\/strong\u003e\u003cbr\u003e· Single-channel audio streaming over Wi-Fi\u003cbr\u003e· True professional audio interface\u003cbr\u003e· Supports 45 users in unicast mode or\u003cbr\u003e1500+ users in multicast mode.\u003cbr\u003e· Works with free WaveCAST iOS or\u003cbr\u003eAndroid apps\u003cbr\u003e\u003cstrong\u003eFM FEATURES\u003c\/strong\u003e\u003cbr\u003e· Up to 1000 foot operating range\u003cbr\u003e· Adjustable RF power output\u003cbr\u003e· Professional DSP audio platform\u003cbr\u003e· Works with existing Williams Sound FM\u003cbr\u003ereceivers\u003cbr\u003e\u003cstrong\u003eMARKETS\u003c\/strong\u003e\u003cbr\u003e· Houses of Worship\u003cbr\u003e· Education: Lecture Halls\/Classrooms\u003cbr\u003e· Government: City Halls\u003cbr\u003e· Stadiums\/Performance Venues\u003cbr\u003e\u003cstrong\u003eAPPLICATIONS\u003c\/strong\u003e\u003cbr\u003e· Assistive Listening\u003cbr\u003e· Interpretation\u003cbr\u003e· Audio Description\u003cbr\u003e· Presentation\u003cbr\u003e· Education\/Training\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/itunes.apple.com\/us\/app\/wavecast-receiver\/id1458383632?mt=8\" data-mce-href=\"https:\/\/itunes.apple.com\/us\/app\/wavecast-receiver\/id1458383632?mt=8\" target=\"_blank\"\u003eIOS – WaveCAST App\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.williamsav.wavecast_receiver\u0026amp;hl=en_US\" data-mce-href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.williamsav.wavecast_receiver\u0026amp;hl=en_US\"\u003eAndroid – WaveCAST App\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e*Note: Firmware is model specific. Firmware updates are currently unable to be completed on Mac computers.\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cdiv class=\"infobox\"\u003e\n\u003ch4\u003eSystem Includes\u003c\/h4\u003e\n\u003cp\u003e(1) ANT 025 antenna\u003cbr\u003e (1) TFP 062 power supply\u003cbr\u003e (1) WCA 013 audio cable\u003cbr\u003e (1) WLC 004 line cord\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--specs_tab panel entry-content wc-tab\" id=\"tab-specs_tab\" role=\"tabpanel\" aria-labelledby=\"tab-title-specs_tab\"\u003e\n\u003cdiv class=\"spc_heading\"\u003e\n\u003ch3\u003eFM T55\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch4\u003eNOTE: The FCC requires this device to be used with approved, FCC 15.203 compliant antennas and be professionally installed. Refer to Williams AV’s Antenna Selection Install Guide for compliant antennas for this product.\u003c\/h4\u003e\n\u003cp\u003eThe FM + connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM + can be used.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eTransmitter: 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\/Silver with silver legends on the front, white legends on the back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19” Rack, one EIA rack space high, 1\/2 space wide\u003cbr\u003e 1–2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eDesktop Style Transformer (TFP 062); Input: 100-240 VAC, 50\/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003ePower ON Indicator\u003c\/td\u003e\n\u003ctd\u003ePush On\/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003eOperating: +32° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eDante\u003c\/td\u003e\n\u003ctd\u003eOnly available on FM T55 D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10\/100 Base-T IEEE 802.3 compliant, unique MAC address\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\" colspan=\"2\"\u003eRF Section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1-75.9 MHz , 17 wideband channels (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eFrequency Accuracy\u003c\/td\u003e\n\u003ctd\u003e± 2 ppm stability, 0-50˚ C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eDeviation\u003c\/td\u003e\n\u003ctd\u003e± 75 kHz maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePre-Emphasis\u003c\/td\u003e\n\u003ctd\u003e75 microsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Field Strength\u003c\/td\u003e\n\u003ctd\u003eDoes not exceed 80 mV\/m at 3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eCompatible Antennas\u003c\/td\u003e\n\u003ctd\u003eANT 005, ANT 021, ANT 024, ANT 025, ANT 029\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eRefer to Williams AV’s Antenna Selection Install Guide for FCC-compliant antennas for this product.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eRF Outputs\u003c\/td\u003e\n\u003ctd\u003e(1x) #10-32 stud connector in center of unit (pcb mounted)\u003cbr\u003e (1x) F-connector on rear chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Transmit Indicator\u003c\/td\u003e\n\u003ctd\u003e1 Green LED On Air Indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eRF Power\u003c\/td\u003e\n\u003ctd\u003eFull, Medium, Low or OFF indicated by menu icon.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Time Out (sleep mode)\u003c\/td\u003e\n\u003ctd\u003e30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\" colspan=\"2\"\u003eAudio Section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Processor Functions\u003c\/td\u003e\n\u003ctd\u003eDSP based; Compression: 1:1, 1.5:1 or 2:1; High-pass and Low-pass Filter Frequency control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e31-16000 Hz, ±3 dB (re: 1 kHz, ±3 dB) (“Music” Audio Preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB (typical) Transmitted RF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eCommon Mode Rejection\u003c\/td\u003e\n\u003ctd\u003eGreater than 57 dB @ 1 kHz, Mic or Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eAudio Inputs\u003c\/td\u003e\n\u003ctd\u003e(1x) Combination 3-pin XLR, 1\/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Input Gain Adjust\u003c\/td\u003e\n\u003ctd\u003eIn menu, adjustable to 0 to -50 dB, in 1dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePhantom Power\u003c\/td\u003e\n\u003ctd\u003e14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1\/4″ TRS jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Level Indicators\u003c\/td\u003e\n\u003ctd\u003e10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd\u003e1\/4″ TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 Ω (level adjustable in menu 0 to -40 dB in 2 dB steps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eLine Output\u003c\/td\u003e\n\u003ctd\u003eRCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eInput Levels (Bal or Unbal) (at Audio Input Gain = 0dB)\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eNominal (1st Amber + 3dB LED)\u003c\/td\u003e\n\u003ctd\u003eOverload Warning (Displayed on Screen)\u003c\/td\u003e\n\u003ctd\u003eAbsolute Max. Rating*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eMicrophone\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003e-55 dBV (1.7 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e-22 dBV (80 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e+20 dBV (10.0 V RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eLine\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003e-25 dBV (55 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e+16 dBV (6.3 V RMS)\u003c\/td\u003e\n\u003ctd\u003e+20 dBV (10.0 V RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, RoHS3, WEEE, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNOTE: Specifications are subject to change without notice.\u003cbr\u003e * Stresses above these ratings may cause permanent damage or degrade reliability.\u003c\/p\u003e\n\u003cdiv class=\"spc_heading\"\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cp\u003e2 Years\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739796766956,"sku":"FM T55","price":1390.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-t55-fm-assistive-listening-system-discontinued-creation-networks-62967.jpg?v=1757912487"},{"product_id":"williams-sound-fm-t55-d-fm-assistive-listening-system-with-dante","title":"Williams Sound FM T55 D FM+ Assistive Listening System with Dante (Discontinued)","description":"\u003cdiv class=\"elementor-element elementor-element-365db01 elementor-widget elementor-widget-woocommerce-product-content\" data-id=\"365db01\" data-element_type=\"widget\" data-widget_type=\"woocommerce-product-content.default\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cp\u003eFM Plus Large-area Dual FM and Wi-Fi base transmitter with network control, OLED display, DSP audio processing, Dante ethernet input, analog XLR input and line output. Includes: (1) ANT 025 antenna, (1) TFP 048 power supply, (1) WCA 013 audio cable, (1) WLC 004 line cord. FM operates in the 72-76 MHz band. Check for availability\u003c\/p\u003e\n\u003cp\u003eThe FM+ integrates professional WaveCAST Wi-Fi audio server technology into a Williams AV FM assistive listening system. End users can now listen with either an FM receiver or with their own smartphone (via the \u003ca href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\" data-mce-href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\"\u003eWaveCAST Receiver App\u003c\/a\u003e). Along with this flexibility comes exceptional audio quality, as the FM+ is built on a professional digital audio (DSP) platform.\u003c\/p\u003e\n\u003cp\u003eThe FM+ is designed to support those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity is also available for those who want a more traditional assistive listening system with a dedicated FM receiver and headset. Venues no longer need to choose between providing FM or Wi-Fi assistive listening systems. FM+ supports both the new iOS and Android \u003ca href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\" data-mce-href=\"https:\/\/williamsav.com\/product\/wavecast-app\/\"\u003eWaveCAST Receiver Apps\u003c\/a\u003e — in addition to all of the current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.\u003c\/p\u003e\n\u003cp\u003eMost settings can be changed via the front panel interface, or the hosted web interface. A remote programming guide is available upon request.\u003c\/p\u003e\n\u003cp\u003eThe FM+ uses the WaveCAST app to provide an easy-to-use, intuitive user interface. It is available in iOS or Android. Listeners easily select channel and volume level once their personal device is connected to the Wi-Fi network. The app does not work on FM Broadcasts.\u003c\/p\u003e\n\u003cp\u003eWilliams Sound is ready to revolutionize the world of assistive listening with the introduction of FM Plus -- the industry’s first dual-transmission system able to broadcast both FM and Wi-Fi audio from a single device.\u003cbr\u003eOften, the integrator’s most difficult choice when designing an assistive listening system is deciding between an FM or Wi-Fi solution for their customer. With FM Plus, the customer gets both for little more than the cost of an FM-only solution. The FM Plus integrates the new WaveCAST Wi-Fi audio server technology into a Williams Sound FM assistive listening system. End users can now listen with either an FM receiver or with their own smartphone (via the WaveCAST Listening App). With this flexibility comes exceptional audio quality, as the FM Plus is built on a professional digital audio (DSP) platform. In addition, its optional Dante interface provides integrators with a full digital audio networking solution. FM Plus is designed for those who want to use their own smartphones and headphones for a more discreet assistive listening experience. Simplicity is also available for those who want a more traditional assistive listening system with a\u003cbr\u003ededicated FM receiver and headset. FM Plus supports both the new iOS and Android WaveCAST Apps -- in addition to all current and legacy Williams Sound FM receivers operating on the 72-76 MHz bandwidth.\u003cbr\u003e\u003cstrong\u003eSYSTEM FEATURES\u003c\/strong\u003e\u003cbr\u003e· Professional audio inputs: 1\/4”\/XLR,\u003cbr\u003ephantom power, line level output jack.\u003cbr\u003e· Audio presets -- hearing assistance,\u003cbr\u003emusic, voice and custom\u003cbr\u003e· 16-bit DAC provides 48Khz sample rate\u003cbr\u003e· 10 segment LED bar graph\u003cbr\u003e· Optional Dante input\u003cbr\u003e\u003cstrong\u003eWI-FI FEATURES\u003c\/strong\u003e\u003cbr\u003e· Single-channel audio streaming over Wi-Fi\u003cbr\u003e· True professional audio interface\u003cbr\u003e· Supports 45 users in unicast mode or\u003cbr\u003e1500+ users in multicast mode.\u003cbr\u003e· Works with free WaveCAST iOS or\u003cbr\u003eAndroid apps\u003cbr\u003e\u003cstrong\u003eFM FEATURES\u003c\/strong\u003e\u003cbr\u003e· Up to 1000 foot operating range\u003cbr\u003e· Adjustable RF power output\u003cbr\u003e· Professional DSP audio platform\u003cbr\u003e· Works with existing Williams Sound FM\u003cbr\u003ereceivers\u003cbr\u003e\u003cstrong\u003eMARKETS\u003c\/strong\u003e\u003cbr\u003e· Houses of Worship\u003cbr\u003e· Education: Lecture Halls\/Classrooms\u003cbr\u003e· Government: City Halls\u003cbr\u003e· Stadiums\/Performance Venues\u003cbr\u003e\u003cstrong\u003eAPPLICATIONS\u003c\/strong\u003e\u003cbr\u003e· Assistive Listening\u003cbr\u003e· Interpretation\u003cbr\u003e· Audio Description\u003cbr\u003e· Presentation\u003cbr\u003e· Education\/Training\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/itunes.apple.com\/us\/app\/wavecast-receiver\/id1458383632?mt=8\" data-mce-href=\"https:\/\/itunes.apple.com\/us\/app\/wavecast-receiver\/id1458383632?mt=8\" target=\"_blank\"\u003eIOS – WaveCAST App\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.williamsav.wavecast_receiver\u0026amp;hl=en_US\" data-mce-href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.williamsav.wavecast_receiver\u0026amp;hl=en_US\"\u003eAndroid – WaveCAST App\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e*Note: Firmware is model specific. Firmware updates are currently unable to be completed on Mac computers.\u003c\/em\u003e\u003c\/p\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--description panel entry-content wc-tab\" id=\"tab-description\" role=\"tabpanel\" aria-labelledby=\"tab-title-description\"\u003e\n\u003cdiv class=\"infobox\"\u003e\n\u003ch4\u003eSystem Includes\u003c\/h4\u003e\n\u003cp\u003e(1) ANT 025 antenna\u003cbr\u003e (1) TFP 062 power supply\u003cbr\u003e (1) WCA 013 audio cable\u003cbr\u003e (1) WLC 004 line cord\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv class=\"woocommerce-Tabs-panel woocommerce-Tabs-panel--specs_tab panel entry-content wc-tab\" id=\"tab-specs_tab\" role=\"tabpanel\" aria-labelledby=\"tab-title-specs_tab\"\u003e\n\u003cdiv class=\"spc_heading\"\u003e\n\u003ch3\u003eFM T55\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003ch4\u003eNOTE: The FCC requires this device to be used with approved, FCC 15.203 compliant antennas and be professionally installed. Refer to Williams AV’s Antenna Selection Install Guide for compliant antennas for this product.\u003c\/h4\u003e\n\u003cp\u003eThe FM + connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM + can be used.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eTransmitter: 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\/Silver with silver legends on the front, white legends on the back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19” Rack, one EIA rack space high, 1\/2 space wide\u003cbr\u003e 1–2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eDesktop Style Transformer (TFP 062); Input: 100-240 VAC, 50\/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003ePower ON Indicator\u003c\/td\u003e\n\u003ctd\u003ePush On\/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003eOperating: +32° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eDante\u003c\/td\u003e\n\u003ctd\u003eOnly available on FM T55 D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10\/100 Base-T IEEE 802.3 compliant, unique MAC address\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\" colspan=\"2\"\u003eRF Section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1-75.9 MHz , 17 wideband channels (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eFrequency Accuracy\u003c\/td\u003e\n\u003ctd\u003e± 2 ppm stability, 0-50˚ C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eDeviation\u003c\/td\u003e\n\u003ctd\u003e± 75 kHz maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePre-Emphasis\u003c\/td\u003e\n\u003ctd\u003e75 microsec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Field Strength\u003c\/td\u003e\n\u003ctd\u003eDoes not exceed 80 mV\/m at 3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eCompatible Antennas\u003c\/td\u003e\n\u003ctd\u003eANT 005, ANT 021, ANT 024, ANT 025, ANT 029\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eRefer to Williams AV’s Antenna Selection Install Guide for FCC-compliant antennas for this product.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eRF Outputs\u003c\/td\u003e\n\u003ctd\u003e(1x) #10-32 stud connector in center of unit (pcb mounted)\u003cbr\u003e (1x) F-connector on rear chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Transmit Indicator\u003c\/td\u003e\n\u003ctd\u003e1 Green LED On Air Indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eRF Power\u003c\/td\u003e\n\u003ctd\u003eFull, Medium, Low or OFF indicated by menu icon.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eRF Time Out (sleep mode)\u003c\/td\u003e\n\u003ctd\u003e30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\" colspan=\"2\"\u003eAudio Section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Processor Functions\u003c\/td\u003e\n\u003ctd\u003eDSP based; Compression: 1:1, 1.5:1 or 2:1; High-pass and Low-pass Filter Frequency control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e31-16000 Hz, ±3 dB (re: 1 kHz, ±3 dB) (“Music” Audio Preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB (typical) Transmitted RF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eCommon Mode Rejection\u003c\/td\u003e\n\u003ctd\u003eGreater than 57 dB @ 1 kHz, Mic or Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eAudio Inputs\u003c\/td\u003e\n\u003ctd\u003e(1x) Combination 3-pin XLR, 1\/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Input Gain Adjust\u003c\/td\u003e\n\u003ctd\u003eIn menu, adjustable to 0 to -50 dB, in 1dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003ePhantom Power\u003c\/td\u003e\n\u003ctd\u003e14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1\/4″ TRS jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eAudio Level Indicators\u003c\/td\u003e\n\u003ctd\u003e10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eHeadphone Output\u003c\/td\u003e\n\u003ctd\u003e1\/4″ TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 Ω (level adjustable in menu 0 to -40 dB in 2 dB steps)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eLine Output\u003c\/td\u003e\n\u003ctd\u003eRCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eInput Levels (Bal or Unbal) (at Audio Input Gain = 0dB)\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eNominal (1st Amber + 3dB LED)\u003c\/td\u003e\n\u003ctd\u003eOverload Warning (Displayed on Screen)\u003c\/td\u003e\n\u003ctd\u003eAbsolute Max. Rating*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eMicrophone\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003e-55 dBV (1.7 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e-22 dBV (80 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e+20 dBV (10.0 V RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eLine\u003c\/td\u003e\n\u003ctd\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003e-25 dBV (55 mV RMS)\u003c\/td\u003e\n\u003ctd\u003e+16 dBV (6.3 V RMS)\u003c\/td\u003e\n\u003ctd\u003e+20 dBV (10.0 V RMS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"oddrow\"\u003e\n\u003ctd class=\"first\"\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, RoHS3, WEEE, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"first\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNOTE: Specifications are subject to change without notice.\u003cbr\u003e * Stresses above these ratings may cause permanent damage or degrade reliability.\u003c\/p\u003e\n\u003cdiv class=\"spc_heading\"\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cp\u003e2 Years\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739799322860,"sku":"FM T55 D","price":1510.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-t55-d-fm-assistive-listening-system-with-dante-discontinued-creation-networks-39546.jpg?v=1757912497"},{"product_id":"williams-sound-fm-t55c-00-fm-c-assistive-listening-system","title":"Williams AV FM T55C-00 – FM+ Dual FM and Wi-Fi Assistive Listening Transmitter","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM T55C-00 is an FM+ assistive listening system transmitter that broadcasts FM and Wi-Fi audio simultaneously from a single input source, making it a flexible choice for ADA compliance in auditoriums, houses of worship, and commercial meeting spaces. Listeners can use a traditional 72–76 MHz FM receiver from the venue or stream real-time audio to their own smartphone through the free WaveCAST Receiver app for iOS and Android. Built on a professional DSP audio platform with Telnet control over Ethernet, the FM+ C integrates cleanly into commercial AV systems managed by third-party room control processors.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ C is the first transmitter of its kind to offer an FM broadcast and a Wi-Fi audio broadcast from one input. Whether deployed for assistive listening, language interpretation, or audio description, this dual-broadcast design means venues no longer have to choose between providing an FM assistive listening system or a Wi-Fi streaming system — one half-rack transmitter covers both. The FM side operates on 17 selectable wideband channels between 72.1 and 75.9 MHz and is compatible with all current and legacy Williams Sound FM receivers in the 72–76 MHz band, with a transmission range of up to 1,000 feet using the ANT 005 coaxial antenna.\u003c\/p\u003e\u003cp\u003eFor AV integrators, the FM T55C is built for installed systems. It supports Telnet commands over its rear-panel Ethernet port, so third-party room control systems can manage power, audio gain, channel selection, DSP presets, and more. Configuration is available three ways: the front-panel 3.12-inch OLED display, a hosted web interface, or Telnet over the network. The professional DSP platform includes selectable presets optimized for voice, music, or hearing assistance, plus adjustable high-pass and low-pass filters and compression options for greater speech intelligibility.\u003c\/p\u003e\u003cp\u003eThe combination XLR\/1\/4-inch TRS input accepts balanced or unbalanced line-level or microphone signals with selectable phantom power, so the transmitter connects directly to a house mixer or DSP output. The chassis occupies one EIA rack unit at half-rack width; one or two units mount in a single 19-inch rack space with the optional RPK 005 or RPK 006 rack mount kits. The system ships with an ANT 025 antenna, TFP 062 power supply, and WLC 004 line cord. Note that the FM+ C joins the venue's existing Wi-Fi network for streaming — it does not generate its own network — and the FCC requires professional installation with approved FCC 15.203-compliant antennas.\u003c\/p\u003e\u003cp\u003eIf your design calls for Dante network audio input, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-t55cd-00-fm-c-assistive-listening-system-with-dante\"\u003eFM T55CD-00 Dante-equipped model\u003c\/a\u003e, or browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV assistive listening collection\u003c\/a\u003e for compatible receivers and antennas.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Broadcast\u003c\/strong\u003e — Transmits a 72–76 MHz FM signal and a Wi-Fi audio stream simultaneously from a single input source, serving both dedicated receivers and personal smartphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaveCAST App Streaming\u003c\/strong\u003e — Listeners connect to the venue Wi-Fi and select channel and volume in the free WaveCAST Receiver app for iOS and Android for a discreet bring-your-own-device experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional DSP Audio Platform\u003c\/strong\u003e — Voice, music, and hearing-assist presets plus adjustable filters and 1:1, 1.5:1, or 2:1 compression deliver clear, intelligible audio to every listener.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelnet Room Control Integration\u003c\/strong\u003e — AV professionals can control power, gain, channel, and DSP preset from third-party control systems over the RJ-45 Ethernet port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Receiver Compatibility\u003c\/strong\u003e — Works with all current and legacy Williams Sound FM receivers operating in the 72–76 MHz assistive listening band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Transmission Range\u003c\/strong\u003e — Covers up to 1,000 feet with the ANT 005 coaxial antenna, suitable for large auditoriums and worship spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Audio Input\u003c\/strong\u003e — Combination 3-pin XLR and 1\/4-inch TRS jack accepts balanced or unbalanced line or microphone signals with selectable phantom power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Mount Ready\u003c\/strong\u003e — Half-rack, 1RU chassis mounts singly or in pairs in a standard 19-inch rack with optional RPK 005\/RPK 006 kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree Management Interfaces\u003c\/strong\u003e — Configure via the front-panel OLED display, hosted web page, or Telnet commands over Ethernet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRF Sleep Mode\u003c\/strong\u003e — Automatically stops transmitting after 30 minutes or 4 hours of silence to reduce power use, waking instantly when audio returns.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium assistive listening systems\u003c\/li\u003e\n\u003cli\u003eHouse of worship hearing assistance\u003c\/li\u003e\n\u003cli\u003eGovernment space ADA compliance\u003c\/li\u003e\n\u003cli\u003eConference room and commercial meeting space language interpretation\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room and all-hands room audio description\u003c\/li\u003e\n\u003cli\u003eTraining room hearing assistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRack Mount\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 19\" rack, 1 EIA rack space high, 1\/2 space wide; 1–2 units per rack space with optional RPK 005 (single) or RPK 006 (double) kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2 ppm stability, 0–50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeviation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) Combination 3-pin XLR \/ 1\/4\" TRS, balanced or unbalanced line level or microphone with selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Processing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDSP-based; 1:1, 1.5:1, or 2:1 compression; high-pass\/low-pass filters; Music, Voice, and Hearing Assistance presets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 dB typical (transmitted RF @ 1 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhantom Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.4 VDC through 2.2 kΩ resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEthernet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T IEEE 802.3; CAT 5e up to 328 ft (100 m); used for web page, Telnet control, and audio streaming (external router\/DHCP server required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUser Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.12\" OLED display with buttons; hosted web page; Telnet over Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphone Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4\" TRS stereo jack, mono signal, 7.8 mW @ 33 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Antennas\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eANT 005, ANT 021, ANT 024, ANT 025, ANT 028, ANT 029, ANT 034\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTFP 062 desktop transformer; input 100–240 VAC, 50\/60 Hz; output 24 VDC, 750 mA, 18 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+32°F to +122°F (0°C to 50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, RoHS3, WEEE, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded in System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) ANT 025 antenna, (1) TFP 062 power supply, (1) WLC 004 line cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-year warranty against component failure and manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the FM T55C compatible with existing Williams Sound FM receivers?\u003c\/h3\u003e\u003cp\u003eYes. The FM+ C works with all current and legacy Williams Sound FM receivers operating in the 72–76 MHz wideband range, including the FM R37 and FM R38, so venues can keep their existing receiver inventory.\u003c\/p\u003e\u003ch3\u003eDoes the FM+ C provide its own Wi-Fi network for streaming?\u003c\/h3\u003e\u003cp\u003eNo. The transmitter connects to the installation site's existing Wi-Fi network, which must be in place before the Wi-Fi audio stream can be used. The FM broadcast operates independently of the network.\u003c\/p\u003e\u003ch3\u003eCan I integrate the FM T55C with a Crestron, Extron, or other room control system?\u003c\/h3\u003e\u003cp\u003eYes. The transmitter accepts Telnet commands over its Ethernet port, including power, audio gain, channel selection, and DSP preset changes, so it can be monitored and controlled from third-party room control processors.\u003c\/p\u003e\u003ch3\u003eDoes the FM T55C require professional installation?\u003c\/h3\u003e\u003cp\u003eThe FCC requires this device to be used with approved, FCC 15.203-compliant antennas and to be professionally installed. Refer to the Williams AV antenna selection guide for compliant antennas such as the ANT 005, ANT 024, and ANT 025.\u003c\/p\u003e\u003ch3\u003eWhat is the difference between the FM T55C and FM T55CD?\u003c\/h3\u003e\u003cp\u003eThe FM T55CD adds an RJ-45 Dante network audio input for facilities running a Dante audio network. All other transmitter functions are identical between the two models.\u003c\/p\u003e\u003ch3\u003eWhat warranty does Williams AV provide on this transmitter?\u003c\/h3\u003e\u003cp\u003eThe FM T55C carries a 2-year warranty against component failure and manufacturing defects. Creation Networks can assist with warranty coordination and system design support.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739799617772,"sku":"FM T55C-00","price":1540.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-t55c-00-fm-c-assistive-listening-system-creation-networks-96726.jpg?v=1757912503"},{"product_id":"williams-sound-fm-t55cd-00-fm-c-assistive-listening-system-with-dante","title":"Williams AV FM T55CD-00 – FM+ Dual Broadcast Transmitter with Dante Input","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM T55CD-00 is a Dante-enabled FM+ assistive listening transmitter that broadcasts FM and Wi-Fi audio simultaneously from a single source, built for commercial AV installations where audio is distributed over a Dante network. Listeners receive the program through a traditional 72–76 MHz FM receiver or by streaming to their own smartphone with the free WaveCAST Receiver app. With a professional DSP audio platform, Telnet control over Ethernet, and a dedicated RJ-45 Dante input, the FM T55CD drops directly into networked AV systems in auditoriums, government spaces, and houses of worship that must meet ADA assistive listening requirements.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ C platform is the first transmitter of its kind to offer an FM broadcast and a Wi-Fi audio broadcast from a single input source, and the FM T55CD adds Dante network audio input to that dual-broadcast architecture. For integrators standardizing on Dante, this means the assistive listening feed rides the same network as the rest of the audio system — no analog tie lines required — while the combination XLR\/1\/4-inch TRS analog input remains available for line-level or microphone sources with selectable phantom power.\u003c\/p\u003e\u003cp\u003eWhether deployed for assistive listening, language interpretation, or audio description, dual-broadcast technology lets each listener choose: pick up a venue-provided FM receiver, or connect a personal smartphone to the venue Wi-Fi and stream through the WaveCAST app for iOS or Android. The FM side operates on 17 selectable wideband channels between 72.1 and 75.9 MHz with a range of up to 1,000 feet using the ANT 005 coaxial antenna, and remains compatible with all current and legacy Williams Sound receivers in the 72–76 MHz band.\u003c\/p\u003e\u003cp\u003eThe transmitter is built on a professional DSP platform with presets for voice, music, and hearing assistance, plus adjustable high-pass and low-pass filters and compression for maximum speech intelligibility. AV professionals manage the unit through the front-panel OLED display, the hosted web interface, or Telnet commands over Ethernet — enabling control of power, gain, channel, and DSP preset from third-party room control systems. The half-rack, 1RU chassis mounts in a standard 19-inch rack with optional RPK 005 or RPK 006 kits, and the system includes the ANT 025 antenna, power supply, audio cable, and line cord. The FCC requires professional installation with approved FCC 15.203-compliant antennas, and the Wi-Fi stream requires connection to the venue's existing network.\u003c\/p\u003e\u003cp\u003eIf Dante input is not required, the analog-only \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-t55c-00-fm-c-assistive-listening-system\"\u003eFM T55C-00\u003c\/a\u003e offers the same dual-broadcast performance. Browse the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e for compatible FM receivers, neckloops, and antennas.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Network Audio Input\u003c\/strong\u003e — A dedicated RJ-45 Dante port accepts the assistive listening feed directly from the facility's Dante audio network, eliminating analog tie lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Broadcast\u003c\/strong\u003e — Transmits a 72–76 MHz FM signal and a Wi-Fi audio stream simultaneously from one source, serving dedicated receivers and personal devices alike.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaveCAST App Streaming\u003c\/strong\u003e — Listeners stream real-time audio to their own iOS or Android smartphone over the venue Wi-Fi for a discreet assistive listening experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional DSP Audio Platform\u003c\/strong\u003e — Voice, music, and hearing-assist presets with adjustable filters and compression improve intelligibility for hearing-impaired listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelnet Room Control Integration\u003c\/strong\u003e — Third-party control systems manage power, audio gain, channel selection, and DSP presets over the Ethernet port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Analog Input\u003c\/strong\u003e — Combination 3-pin XLR and 1\/4-inch TRS jack supports balanced or unbalanced line or microphone signals with selectable phantom power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLegacy Receiver Compatibility\u003c\/strong\u003e — Works with all current and legacy Williams Sound FM receivers operating in the 72–76 MHz assistive listening band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Transmission Range\u003c\/strong\u003e — Reaches up to 1,000 feet with the ANT 005 coaxial antenna for full coverage of large venues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Mount Ready\u003c\/strong\u003e — Half-rack, 1RU chassis installs singly or in pairs in a 19-inch rack using optional RPK 005\/RPK 006 kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRF Sleep Mode\u003c\/strong\u003e — Stops transmitting after a selectable period of silence and wakes automatically when audio resumes, reducing power consumption.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium assistive listening over Dante audio networks\u003c\/li\u003e\n\u003cli\u003eHouse of worship hearing assistance and audio description\u003c\/li\u003e\n\u003cli\u003eGovernment space ADA compliance\u003c\/li\u003e\n\u003cli\u003eConference room and commercial meeting space language interpretation\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room and all-hands room AV systems\u003c\/li\u003e\n\u003cli\u003eTraining room hearing assistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRack Mount\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 19\" rack, 1 EIA rack space high, 1\/2 space wide; 1–2 units per rack space with optional RPK 005 (single) or RPK 006 (double) kits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDante\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) RJ-45 Dante input\/output jack (\"D\" model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±2 ppm stability, 0–50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDeviation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) Combination 3-pin XLR \/ 1\/4\" TRS, balanced or unbalanced line level or microphone with selectable phantom power; RJ-45 Dante input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Processing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDSP-based; 1:1, 1.5:1, or 2:1 compression; high-pass\/low-pass filters; Music, Voice, and Hearing Assistance presets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64 dB typical (transmitted RF @ 1 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhantom Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.4 VDC through 2.2 kΩ resistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEthernet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T IEEE 802.3; CAT 5e up to 328 ft (100 m); used for web page, Telnet control, and audio streaming (external router\/DHCP server required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUser Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.12\" OLED display with buttons; hosted web page; Telnet over Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphone Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4\" TRS stereo jack, mono signal, 7.8 mW @ 33 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Antennas\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eANT 005, ANT 021, ANT 024, ANT 025, ANT 028, ANT 029, ANT 034\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDesktop transformer; input 100–240 VAC, 50\/60 Hz; output 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+32°F to +122°F (0°C to 50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, RoHS3, WEEE, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded in System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) ANT 025 antenna, (1) TFP 048 power supply, (1) WCA 013 audio cable, (1) WLC 004 line cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-year warranty against component failure and manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does the Dante input on the FM T55CD work?\u003c\/h3\u003e\u003cp\u003eThe transmitter includes an RJ-45 Dante jack that subscribes to a channel on the facility's Dante audio network. The assistive listening feed routes from the house DSP or mixer to the transmitter entirely over the network, with the analog XLR\/TRS input still available as an alternative source.\u003c\/p\u003e\u003ch3\u003eIs the FM T55CD compatible with my existing Williams Sound receivers?\u003c\/h3\u003e\u003cp\u003eYes. It broadcasts on the standard 72–76 MHz assistive listening band and works with all current and legacy Williams Sound FM receivers, including the FM R37 and FM R38.\u003c\/p\u003e\u003ch3\u003eCan listeners use their own phones instead of FM receivers?\u003c\/h3\u003e\u003cp\u003eYes. The simultaneous Wi-Fi broadcast streams to the free WaveCAST Receiver app on iOS and Android once the listener's device joins the venue Wi-Fi network. The app does not receive the FM broadcast.\u003c\/p\u003e\u003ch3\u003eCan I control the FM T55CD from a room control system?\u003c\/h3\u003e\u003cp\u003eYes. The transmitter supports Telnet commands over Ethernet — including power, audio gain, channel selection, and DSP preset — so it integrates with Crestron, Extron, and similar third-party control platforms.\u003c\/p\u003e\u003ch3\u003eDoes this transmitter require professional installation?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires the unit to be professionally installed with approved FCC 15.203-compliant antennas. Williams AV publishes an antenna selection guide listing compliant options for this product.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to the FM T55CD?\u003c\/h3\u003e\u003cp\u003eWilliams AV covers the transmitter with a 2-year warranty against component failure and manufacturing defects. Creation Networks provides pre-sale design assistance and post-sale support coordination.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739816329452,"sku":"FM T55CD-00","price":1790.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-t55cd-00-fm-c-assistive-listening-system-with-dante-creation-networks-84352.jpg?v=1757912507"},{"product_id":"williams-sound-fm-557-fm-system-package-4-r37-receivers","title":"Williams AV FM 557 – FM+ Dual FM and Wi-Fi System, 4 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557 is the base FM+ system package, pairing the dual FM and Wi-Fi T55 transmitter with four PPA R37N receivers to bring ADA-compliant assistive listening to conference rooms, courtrooms, chapels, and training spaces. Listeners pick up the broadcast on the supplied body-pack FM receivers or stream the same audio to their smartphones over the venue's Wi-Fi network. With earphones, neckloops, batteries, and ADA signage included, the package covers the listener-facing side of a hearing assistance deployment while leaving antenna and rack hardware to the integrator's specification.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ platform exists because venues no longer want to choose between proven FM body-pack receivers and modern smartphone streaming — the T55 transmitter does both at once, from one half-rack chassis, at close to the price of a traditional FM-only system. It replaced the long-serving T45 transmitter and added the operational features commercial installations expect: a 3.12-inch OLED display for menu-driven setup, a hosted web page for network configuration, Telnet command control over Ethernet for room control integration, and DSP audio processing with selectable compression ratios and high-pass\/low-pass filters tuned for speech intelligibility. Audio sources connect through a combination XLR\/1\/4-inch input handling balanced or unbalanced mic or line-level signals with selectable phantom power. The transmitter operates on 17 selectable wideband channels between 72.1 and 75.9 MHz, so several systems can run in adjacent rooms without interference. The four PPA R37N receivers seek across all 17 channels, support channel lock, run approximately 50 hours on the included AA alkaline batteries, and connect the included EAR 022 surround earphones or NKL 001 neckloops through a 3.5 mm jack — the neckloops serving hearing aid and cochlear implant users with telecoils. The FM broadcast supports unlimited listeners, so receiver counts grow with the venue. The FCC requires professional installation with an approved FCC 15.203-compliant antenna, sold separately. For a package with antenna, chargers, rechargeable batteries, and rack kit included, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-pro-fm-pro-system-package-4-r37-receivers\"\u003eFM 557 PRO bundle\u003c\/a\u003e; the full lineup is in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM and Wi-Fi in One Transmitter\u003c\/strong\u003e — The T55 broadcasts to FM body-pack receivers and streams over the venue Wi-Fi network simultaneously, covering both listener preferences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour R37N Receivers Included\u003c\/strong\u003e — Body-pack receivers with EAR 022 surround earphones supply the ADA-required hardware for smaller assembly spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Support\u003c\/strong\u003e — Two NKL 001 neckloops deliver audio directly to telecoil-equipped hearing aids without earphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Wideband Channels\u003c\/strong\u003e — Operation across 72.1–75.9 MHz keeps multiple systems interference-free within one facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression and filtering at the transmitter improve clarity for hearing-impaired listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50-Hour Receiver Runtime\u003c\/strong\u003e — Each receiver operates roughly 50 hours on two AA alkaline batteries, which ship in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Page and Telnet Control\u003c\/strong\u003e — Network-based configuration and third-party control integration come standard via the rear Ethernet port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-Rack Form Factor\u003c\/strong\u003e — The transmitter occupies one EIA space at half width and mounts with optional RPK 005 or RPK 006 rack kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque lets venues post assistive listening availability, supporting 2010 ADA guideline compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (4) PPA R37N receivers, (4) EAR 022 surround earphones, (2) NKL 001 neckloops, (1) IDP 008 ADA wall plaque; AA alkaline batteries included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (antenna sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (optional RPK 005\/RPK 006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is the difference between the FM 557 and the FM 557 PRO?\u003c\/h3\u003e\u003cp\u003eBoth include the T55 transmitter and four R37N receivers. The PRO adds the ANT 005 remote antenna, RPK 005 rack panel kit, two BAT KT6 chargers, and rechargeable batteries; this base package ships with alkaline batteries and lets the integrator specify antenna and rack hardware separately.\u003c\/p\u003e\u003ch3\u003eWhat else do I need to install this system?\u003c\/h3\u003e\u003cp\u003eAn approved FCC 15.203-compliant antenna (ANT 005, ANT 021, ANT 024, or ANT 025) and professional installation, both required by the FCC. If rack mounting, add an RPK 005 or RPK 006 panel kit.\u003c\/p\u003e\u003ch3\u003eDoes Wi-Fi streaming need any special setup?\u003c\/h3\u003e\u003cp\u003eThe transmitter joins the venue's existing Wi-Fi network — it does not create its own — so the network must be operational first. Williams AV's WaveCAST networking guide documents recommended settings.\u003c\/p\u003e\u003ch3\u003eCan listeners with hearing aids use the system?\u003c\/h3\u003e\u003cp\u003eYes. The two included NKL 001 neckloops plug into any R37N receiver and couple audio magnetically to telecoil-equipped hearing aids and cochlear implants.\u003c\/p\u003e\u003ch3\u003eHow far does the FM signal reach?\u003c\/h3\u003e\u003cp\u003eWith an ANT 005 coaxial antenna, transmission range extends up to 1,000 feet — ample for the smaller venues this package targets, with headroom for overflow spaces.\u003c\/p\u003e\u003ch3\u003eWhat warranty backs this system?\u003c\/h3\u003e\u003cp\u003eThe transmitter is covered for two years parts and labor; the R37N receivers carry a Lifetime PLUS limited warranty, excluding earphones, headphones, and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739820785900,"sku":"FM 557","price":2275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-fm-system-package-4-r37-receivers-creation-networks-90207.png?v=1757912510"},{"product_id":"williams-sound-fm-557-pro-fm-pro-system-package-4-r37-receivers","title":"Williams AV FM 557 PRO – FM+ PRO Assistive Listening System, 4 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557 PRO is a turnkey assistive listening system with installation accessories, built around the FM+ T55C dual FM and Wi-Fi transmitter and four PPA R37N receivers. It is the right-sized ADA compliance package for conference rooms, courtrooms, training rooms, and smaller worship venues: listeners use the included body-pack FM receivers or stream the audio to their smartphones over the venue Wi-Fi network. The PRO bundle adds a coax antenna, rack panel kit, two-bay chargers, and rechargeable batteries so the system installs without a second accessory order.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eInstallers like this system because the transmitter is genuinely manageable: an OLED display walks through setup at the rack, a hosted web page enables configuration from anywhere on the network, and Telnet over Ethernet ties the unit into third-party control systems for power, status, and level management. Program audio connects through the combination XLR\/1\/4-inch input, which accepts balanced or unbalanced microphone or line-level sources with selectable phantom power and gain adjustable in 1 dB steps — a clean match for a spare DSP output in a commercial AV system. DSP processing with selectable compression and high-pass\/low-pass filtering shapes the feed for speech intelligibility, the property that matters most in assistive listening. The transmitter broadcasts on 17 selectable wideband channels between 72.1 and 75.9 MHz, and the included ANT 005 remote coaxial antenna extends range up to 1,000 feet. Each of the four PPA R37N receivers tunes the full channel set with a recessed seek button, supports channel lock, and ships with an EAR 022 surround earphone; two NKL 001 neckloops serve telecoil hearing aid users. Two BAT KT6 two-bay chargers and rechargeable batteries handle power, and the RPK 005 kit mounts the half-rack transmitter in one EIA rack space. The IDP 008 ADA wall plaque finishes the compliance picture. FCC rules require professional installation with an approved antenna. Need network audio? The \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-pro-d-fm-pro-system-package-4-r37-receivers-dante\"\u003eFM 557 PRO D variant\u003c\/a\u003e adds a Dante input; receivers and accessories are in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmitter\u003c\/strong\u003e — The T55C broadcasts to dedicated FM receivers while streaming the same audio over the venue Wi-Fi network for smartphone listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Accessories Included\u003c\/strong\u003e — The ANT 005 coaxial antenna, coax cable, and RPK 005 rack panel kit make this a one-order, rack-ready package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour R37N Receivers with Earphones\u003c\/strong\u003e — Body-pack receivers and EAR 022 surround earphones provide the ADA-required hardware for smaller assembly spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Battery Kit\u003c\/strong\u003e — Two BAT KT6 two-bay chargers and rechargeable batteries remove disposable battery costs from day-to-day operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Neckloops\u003c\/strong\u003e — Two NKL 001 neckloops couple audio magnetically to hearing aids and cochlear implants with telecoils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression and filter settings tune the broadcast for maximum speech clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelnet and Web Control\u003c\/strong\u003e — Ethernet-based remote management integrates the transmitter with third-party room control systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels\u003c\/strong\u003e — Selectable frequencies from 72.1 to 75.9 MHz allow several systems to coexist in a multi-room facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Listener Support\u003c\/strong\u003e — The FM broadcast serves any number of receivers, so the system grows with the venue.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55C transmitter, (4) PPA R37N receivers, (4) EAR 022 surround earphones, (2) NKL 001 neckloops, (2) BAT KT6 two-bay chargers and rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Accuracy\u003c\/td\u003e\n\u003ctd\u003e±2 ppm stability, 0–50° C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power (14.4 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input Gain\u003c\/td\u003e\n\u003ctd\u003eMenu adjustable, 0 to -50 dB in 1 dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T IEEE 802.3, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eTFP 062 desktop transformer; 100–240 VAC input; 24 VDC, 750 mA, 18 W output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, RoHS3, WEEE, Industry Canada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat size venue suits the four-receiver package?\u003c\/h3\u003e\u003cp\u003eSmaller assembly spaces — conference rooms, courtrooms, training rooms, and chapels — where ADA receiver-count guidance calls for a handful of units. The 12- and 24-receiver FM 557 packages cover larger venues, and receivers can be added to this system at any time.\u003c\/p\u003e\u003ch3\u003eHow does the transmitter integrate with a conference room AV system?\u003c\/h3\u003e\u003cp\u003eConnect a line-level output from the room DSP or mixer to the combination XLR\/1\/4-inch input, mount the transmitter in the rack with the included RPK 005 kit, and use Telnet over Ethernet if the room control system should manage or monitor it.\u003c\/p\u003e\u003ch3\u003eDo smartphone listeners need venue Wi-Fi?\u003c\/h3\u003e\u003cp\u003eYes. The FM+ joins the installation location's existing Wi-Fi network and does not provide a network of its own, so working venue Wi-Fi must be established before the streaming feature can be used.\u003c\/p\u003e\u003ch3\u003eAre rechargeable batteries included?\u003c\/h3\u003e\u003cp\u003eYes. Two BAT KT6 two-bay charger kits with rechargeable batteries are in the package, supporting roughly 32 hours of receiver runtime per charge; standard AA alkaline cells extend that to about 50 hours.\u003c\/p\u003e\u003ch3\u003eIs professional installation mandatory?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to be professionally installed with an approved FCC 15.203-compliant antenna. The included ANT 005 is compliant, and the Williams AV Antenna Selection Install Guide lists alternatives.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to the system?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a two-year parts and labor warranty; the R37N receivers are covered by a Lifetime PLUS limited warranty, excluding earphones, headphones, and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739828519148,"sku":"FM 557 PRO","price":2715.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-pro-fm-pro-system-package-4-r37-receivers-creation-networks-89397.png?v=1757912515"},{"product_id":"williams-sound-fm-557-pro-d-fm-pro-system-package-4-r37-receivers-dante","title":"Williams AV FM 557 PRO D – Dante FM+ PRO System, 4 R37 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557 PRO D is the entry point to Dante-enabled assistive listening: a complete FM+ PRO system pairing the T55 D dual FM and Wi-Fi transmitter with four PPA R37N receivers and professional installation accessories. The Dante input lets the transmitter take program audio directly from the venue's audio network, while listeners choose between the supplied body-pack FM receivers and Wi-Fi streaming on their own smartphones. For courtrooms, boardrooms, training rooms, and smaller worship spaces designing around networked audio, this package covers ADA hearing assistance in a single SKU.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eProfessional AV installers favor this system because the T55 D transmitter behaves like modern networked equipment rather than a standalone RF box. Its Dante port subscribes to an audio flow from the house DSP or console; its OLED display, hosted web page, and Telnet-over-Ethernet command set handle configuration, monitoring, and third-party control integration; and its half-rack chassis mounts in a standard 19-inch rack using the included RPK 005 panel kit. An analog combination XLR\/1\/4-inch input with selectable phantom power remains available for venues feeding a microphone or analog line source. The transmitter's DSP applies selectable compression and high-pass\/low-pass filtering so the broadcast stays intelligible for hearing-impaired listeners, and it operates on 17 selectable wideband channels between 72.1 and 75.9 MHz. The four PPA R37N receivers tune those same channels with a seek button, run roughly 32 hours per charge on the included rechargeable batteries managed by two BAT KT6 two-bay chargers, and pair with EAR 022 surround earphones; two NKL 001 neckloops support telecoil hearing aid users. The ANT 005 remote coaxial antenna delivers transmission range up to 1,000 feet — far beyond the needs of a single room, which makes the package suitable for overflow and multi-space coverage. FCC rules require professional installation with a compliant antenna. Venues with bigger audiences can scale to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-12-pro-d-fm-pro-system-package-12-r37-receivers-dante\"\u003eFM 557-12 PRO D twelve-receiver package\u003c\/a\u003e, and supporting accessories are in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Network Input\u003c\/strong\u003e — The T55 D takes program audio straight off the Dante network, eliminating analog cabling between the DSP and the assistive listening transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM Plus Wi-Fi Streaming\u003c\/strong\u003e — One transmitter serves dedicated FM receivers and smartphone listeners on the venue network simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Receiver Starter Fleet\u003c\/strong\u003e — PPA R37N body-packs with surround earphones cover ADA receiver requirements for smaller assembly spaces, expandable at any time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Power Included\u003c\/strong\u003e — Two BAT KT6 two-bay chargers with rechargeable batteries keep all four receivers ready without disposable cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl System Friendly\u003c\/strong\u003e — Telnet over Ethernet and a hosted web page integrate the transmitter into room control and remote monitoring workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Wideband operation between 72.1 and 75.9 MHz permits multiple systems across a multi-room facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Transmission Range\u003c\/strong\u003e — The included ANT 005 remote coaxial antenna covers large areas and adjacent overflow spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Panel Kit Included\u003c\/strong\u003e — The RPK 005 mounts the half-rack transmitter cleanly in one EIA rack space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Compliance Out of the Box\u003c\/strong\u003e — Neckloops for telecoil users and the IDP 008 wall plaque support 2010 ADA hearing assistance guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 D transmitter, (4) PPA R37N receivers, (4) EAR 022 surround earphones, (2) NKL 001 neckloops, (2) BAT KT6 two-bay chargers and rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDante\u003c\/td\u003e\n\u003ctd\u003eYes — available on the FM T55 D transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Audio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on AA NiMH rechargeable; approx. 50 hrs on AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhen does the Dante version make sense over the standard FM 557 PRO?\u003c\/h3\u003e\u003cp\u003eChoose the PRO D when the room's audio already runs on Dante — conference facilities, courtrooms, and worship venues with networked DSPs. The transmitter then needs only a network connection for program audio. Analog-only rooms can use the standard FM 557 PRO.\u003c\/p\u003e\u003ch3\u003eIs four receivers enough for ADA compliance?\u003c\/h3\u003e\u003cp\u003eADA receiver counts scale with seating capacity, and four receivers suit smaller assembly spaces. Because the FM broadcast supports unlimited listeners, additional R37N receivers can be added whenever capacity or attendance grows.\u003c\/p\u003e\u003ch3\u003eHow do the chargers work?\u003c\/h3\u003e\u003cp\u003eTwo BAT KT6 two-bay drop-in chargers are included with rechargeable batteries, charging all four receivers simultaneously. Receivers also accept standard AA alkaline cells for roughly 50 hours of runtime.\u003c\/p\u003e\u003ch3\u003eCan a control system manage the transmitter?\u003c\/h3\u003e\u003cp\u003eYes. The T55 D accepts Telnet commands over its Ethernet port and hosts a configuration web page, so control processors and facility staff can monitor and adjust the system remotely.\u003c\/p\u003e\u003ch3\u003eWhat are the installation requirements?\u003c\/h3\u003e\u003cp\u003eThe FCC requires professional installation with an approved FCC 15.203-compliant antenna; the included ANT 005 qualifies. The Wi-Fi streaming feature additionally requires the venue's existing wireless network to be operational.\u003c\/p\u003e\u003ch3\u003eWhat warranty coverage is provided?\u003c\/h3\u003e\u003cp\u003eTwo years parts and labor on the transmitter, and a Lifetime PLUS limited warranty on the R37N receivers, excluding earphones, headphones, and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739840774380,"sku":"FM 557 PRO D","price":2970.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-pro-d-fm-pro-system-package-4-r37-receivers-and-dante-creation-networks-24341.png?v=1757912526"},{"product_id":"williams-sound-fm-557-12-fm-system-package-12-r37-receivers","title":"Williams AV FM 557-12 – FM+ System Package with 12 R37 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 FM+ system package equips mid-size venues with ADA-compliant assistive listening built around dual transmission: the FM+ T55 transmitter broadcasts to the twelve included PPA R37N FM receivers and streams the identical audio over the building's Wi-Fi network at the same time. Sanctuaries, lecture halls, and municipal meeting rooms get a complete listener-side kit — receivers, surround earphones, neckloops, and ADA signage — with a transmitter that integrates into a modern networked AV environment.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eWilliams AV's FM+ platform delivers both FM and Wi-Fi audio from one half-rack transmitter for close to the price of a traditional FM-only system, which is why it has become a standard specification for assistive listening upgrades. In this package the T55 transmitter accepts a balanced or unbalanced mic or line-level source on its combination XLR\/1\/4-inch input — phantom power is selectable for condenser microphones — and processes it through onboard DSP with selectable compression ratios and high-pass\/low-pass filters chosen for speech clarity. Setup runs through a 3.12-inch OLED display, with a hosted web page and Telnet-over-Ethernet control available for remote administration and integration with third-party control systems. The transmitter operates on 17 selectable wideband channels between 72.1 and 75.9 MHz, allowing several systems to coexist within one facility. On the receive side, each PPA R37N body-pack runs about 50 hours on its included AA alkaline batteries, locks to the house channel to prevent accidental retuning, and feeds the included EAR 022 surround earphones; three NKL 001 neckloops serve listeners whose hearing aids or cochlear implants have telecoils. The FM broadcast supports an unlimited audience, so growth means adding receivers, not replacing the head end. An FCC 15.203-compliant antenna and professional installation are required by the FCC and are not part of this base package — integrators wanting antenna, chargers, batteries, and a rack kit included should specify the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-12-pro-fm-pro-system-package-12-r37-receivers\"\u003eFM 557-12 PRO bundle\u003c\/a\u003e. The complete family of transmitters, receivers, and accessories is in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmission\u003c\/strong\u003e — One T55 transmitter serves the included FM receivers and smartphone listeners over the venue network simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwelve-Receiver Listener Kit\u003c\/strong\u003e — PPA R37N body-packs with EAR 022 surround earphones cover the receiver inventory ADA guidelines expect for mid-size assembly spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatibility\u003c\/strong\u003e — Three NKL 001 neckloops deliver audio directly to telecoil-equipped hearing aids without earphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels\u003c\/strong\u003e — Selectable frequencies between 72.1 and 75.9 MHz keep multiple systems interference-free in the same building.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeech-Focused DSP\u003c\/strong\u003e — Adjustable compression and filtering at the transmitter improve intelligibility for listeners with hearing loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — Receivers run approximately 50 hours on the included AA alkaline cells, or about 32 hours on optional NiMH rechargeables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb and Telnet Management\u003c\/strong\u003e — The hosted web interface and Ethernet Telnet control support remote monitoring and control-system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-Rack Form Factor\u003c\/strong\u003e — The transmitter occupies one EIA space, half width, and rack mounts with optional RPK 005 or RPK 006 kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Compliance Support\u003c\/strong\u003e — The system meets 2010 ADA hearing assistance guidelines and includes the IDP 008 availability plaque.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (12) PPA R37N receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) IDP 008 ADA wall plaque\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (antenna sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (optional RPK 005\/RPK 006)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does this package differ from the FM 557-12 PRO?\u003c\/h3\u003e\u003cp\u003eSame transmitter, same twelve receivers. The PRO version adds the ANT 005 antenna, RPK 005 rack panel kit, a CHG 3512 12-bay charger, and NiMH rechargeable batteries; this standard package lets integrators specify those items separately.\u003c\/p\u003e\u003ch3\u003eWhat audio feed should I plan for the transmitter?\u003c\/h3\u003e\u003cp\u003eA line-level output from the venue DSP or mixer is typical, connected to the combination XLR\/1\/4-inch input. The input also accepts microphones directly, with selectable phantom power and gain adjustable in 1 dB steps.\u003c\/p\u003e\u003ch3\u003eDo listeners need an app for Wi-Fi listening?\u003c\/h3\u003e\u003cp\u003eSmartphone listeners stream the audio over the venue's Wi-Fi network. The venue's network must be in place first — the transmitter joins an existing network rather than creating one.\u003c\/p\u003e\u003ch3\u003eCan the receivers be locked to one channel?\u003c\/h3\u003e\u003cp\u003eYes. The PPA R37N supports channel lock, and its seek button is recessed inside the battery compartment, preventing audience members from changing channels during an event.\u003c\/p\u003e\u003ch3\u003eWhat antenna does this transmitter require?\u003c\/h3\u003e\u003cp\u003eAn approved FCC 15.203-compliant antenna — ANT 005, ANT 021, ANT 024, or ANT 025 — installed professionally, per FCC requirements. The Williams AV Antenna Selection Install Guide details the options for each installation type.\u003c\/p\u003e\u003ch3\u003eWhat is the warranty?\u003c\/h3\u003e\u003cp\u003eThe transmitter is warranted for two years parts and labor; the R37N receivers carry a Lifetime PLUS limited warranty, with earphones, headphones, and batteries excluded.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739845820652,"sku":"FM 557-12","price":3537.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-12-fm-system-package-12-r37-receivers-creation-networks-52698.png?v=1757912532"},{"product_id":"williams-sound-fm-557-12-pro-fm-pro-system-package-12-r37-receivers","title":"Williams AV FM 557-12 PRO – FM+ PRO System Package, 12 R37 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 PRO system package provides large-area assistive listening for mid-size venues, combining the FM+ T55 dual FM and Wi-Fi transmitter with 12 PPA R37N receivers and a professional installation accessory bundle. Designed for ADA compliance in churches, council chambers, theaters, and corporate meeting facilities, the system reaches listeners through dedicated body-pack FM receivers or through their own smartphones via the venue's Wi-Fi network. The PRO bundle adds the coaxial antenna, rack panel kit, charger, and rechargeable batteries that turn a component list into an installable system.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ T55 transmitter at the center of this package succeeded the widely deployed T45, carrying forward 72 MHz-band FM transmission while adding network audio streaming over Wi-Fi — two delivery methods, one half-rack chassis, priced close to a conventional FM-only system. Program audio enters through a combination XLR\/1\/4-inch connector that accepts balanced or unbalanced mic or line-level signals, with phantom power selectable from the menu. The internal DSP audio processor provides compression at 1:1, 1.5:1, or 2:1 and adjustable high-pass and low-pass filters, letting the installer tailor the broadcast specifically for speech intelligibility. A bright OLED display handles local configuration, and the rear Ethernet port exposes both a hosted web page and Telnet command control for integration with room control processors — useful when the assistive listening system needs to power-manage or report status alongside the rest of the AV rack. The twelve PPA R37N receivers tune 17 wideband channels from 72.1 to 75.9 MHz, run about 32 hours on the included NiMH rechargeables (managed by the CHG 3512 12-bay charger), and include EAR 022 surround earphones; three NKL 001 neckloops support listeners with telecoil hearing aids. The ANT 005 remote coaxial antenna provides up to 1,000 feet of range, and the RPK 005 kit mounts the transmitter in a standard 19-inch rack. FCC regulations require professional installation with an approved antenna. Smaller rooms can deploy the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-pro-fm-pro-system-package-4-r37-receivers\"\u003eFM 557 PRO four-receiver package\u003c\/a\u003e; see the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e for the complete assistive listening lineup.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Path Audio Delivery\u003c\/strong\u003e — One transmitter broadcasts FM to the included receivers while streaming the same feed over venue Wi-Fi to listeners' smartphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid-Size Receiver Complement\u003c\/strong\u003e — Twelve PPA R37N receivers with surround earphones align with ADA receiver-count guidance for venues in this capacity range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall-Ready Accessories\u003c\/strong\u003e — The ANT 005 antenna, RPK 005 rack panel kit, and coax cable prepare the system for a professional equipment-rack installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Bay Charging Station\u003c\/strong\u003e — The CHG 3512 charger and included NiMH batteries keep every receiver charged from one central location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable DSP Processing\u003c\/strong\u003e — Selectable compression and filter settings let installers optimize the signal for spoken-word clarity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOLED Display and Web Control\u003c\/strong\u003e — Local menu navigation plus a hosted web page simplify configuration, monitoring, and troubleshooting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl System Integration\u003c\/strong\u003e — Telnet over Ethernet allows third-party control processors to manage the transmitter remotely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Wideband operation between 72.1 and 75.9 MHz supports multiple simultaneous systems within one facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Listener Expansion\u003c\/strong\u003e — The FM broadcast accommodates any number of receivers, so capacity grows by adding R37N units only.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (12) PPA R37N receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) CHG 3512 12-bay charger, (12) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power (14.4 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input Gain\u003c\/td\u003e\n\u003ctd\u003eMenu adjustable, 0 to -50 dB in 1 dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on AA NiMH rechargeable; approx. 50 hrs on AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich venues is the 12-receiver package sized for?\u003c\/h3\u003e\u003cp\u003eMid-size assembly spaces — sanctuaries, theaters, council chambers, and corporate meeting facilities — where ADA receiver-count guidance calls for roughly a dozen units. Larger venues can step up to the 24-receiver FM 557-24 PRO, and the FM broadcast supports more receivers at any time.\u003c\/p\u003e\u003ch3\u003eDoes the system include everything for installation?\u003c\/h3\u003e\u003cp\u003eYes — the PRO bundle adds the ANT 005 remote coaxial antenna, RPK 005 rack panel kit, CHG 3512 charger, and NiMH batteries to the standard system contents. Professional installation with an FCC-compliant antenna is required by the FCC.\u003c\/p\u003e\u003ch3\u003eHow does smartphone listening work?\u003c\/h3\u003e\u003cp\u003eThe T55 transmitter joins the venue's existing Wi-Fi network and streams the program audio to listeners' phones. The transmitter does not create its own network, so working venue Wi-Fi is a prerequisite for the streaming feature.\u003c\/p\u003e\u003ch3\u003eCan the transmitter be monitored remotely?\u003c\/h3\u003e\u003cp\u003eYes. It hosts a configuration web page and accepts Telnet commands over its Ethernet port, allowing facility staff or an integrated control system to monitor status and adjust settings without rack access.\u003c\/p\u003e\u003ch3\u003eAre the receivers protected against accidental retuning?\u003c\/h3\u003e\u003cp\u003eYes. The PPA R37N supports channel lock, and the channel seek button sits inside the battery compartment, so audience members cannot inadvertently change channels mid-event.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a two-year parts and labor warranty; each R37N receiver is covered by a Lifetime PLUS limited warranty, excluding earphones, headphones, and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739846770924,"sku":"FM 557-12 PRO","price":4734.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-12-pro-fm-pro-system-package-12-r37-receivers-creation-networks-34296.png?v=1757912537"},{"product_id":"williams-sound-fm-557-12-pro-d-fm-pro-system-package-12-r37-receivers-dante","title":"Williams AV FM 557-12 PRO D – FM+ PRO System with Dante, 12 R37 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-12 PRO D is a turnkey FM+ assistive listening package for mid-size venues that combines a Dante-enabled dual FM and Wi-Fi transmitter with 12 PPA R37N receivers and the rack-installation accessories a professional deployment requires. Audiences listen through the supplied body-pack FM receivers or stream the broadcast to their smartphones over the facility's Wi-Fi network. With charging hardware, antenna, rack kit, and ADA signage in the box, this system gives integrators a single line item for hearing assistance in a networked commercial AV project.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe heart of the package is the FM+ T55 D transmitter. Its Dante port pulls program audio directly from the venue's audio-over-IP network, so the assistive listening feed originates at the same DSP that drives the loudspeaker system — no analog breakout needed. A combination XLR\/1\/4-inch jack still handles balanced or unbalanced mic and line-level sources with selectable phantom power when an analog feed is preferred. The transmitter's DSP audio processor offers 1:1, 1.5:1, and 2:1 compression plus adjustable high-pass and low-pass filters, settings that matter when the priority is intelligible speech for hearing-impaired listeners rather than flat program reproduction. The half-rack chassis mounts in a standard 19-inch rack with the included RPK 005 panel kit and presents a 3.12-inch OLED display for local setup; a hosted web page and Telnet control over Ethernet handle remote management and control-system integration. On the listening side, each PPA R37N receiver accesses 17 wideband channels from 72.1 to 75.9 MHz through a seek button, ships with an EAR 022 surround earphone, and recharges in the included CHG 3512 12-bay charger using the supplied NiMH batteries. Three NKL 001 neckloops serve telecoil hearing aid users, and the ANT 005 remote antenna pushes coverage out to 1,000 feet. The FCC mandates professional installation with a compliant antenna. Compare receiver counts across the family in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e, or step up to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-24-pro-d-fm-pro-system-package-24-r37-receivers-dante\"\u003eFM 557-24 PRO D\u003c\/a\u003e for larger venues.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante-Enabled Transmitter\u003c\/strong\u003e — The T55 D receives program audio over the Dante network, keeping the assistive listening system inside the venue's digital audio infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimultaneous FM and Wi-Fi Output\u003c\/strong\u003e — Hardware receivers and smartphone listeners hear the same broadcast at the same time from one transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwelve Receivers with Earphones\u003c\/strong\u003e — PPA R37N body-packs with EAR 022 surround earphones cover the ADA receiver counts typical of mid-size assembly rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentralized Charging\u003c\/strong\u003e — A CHG 3512 12-bay drop-in charger and twelve NiMH battery sets keep the whole receiver fleet event-ready.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThird-Party Control Support\u003c\/strong\u003e — Telnet over Ethernet and a hosted web page integrate the transmitter with room control and monitoring platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Frequency Agility\u003c\/strong\u003e — Selectable wideband channels between 72.1 and 75.9 MHz prevent interference in multi-system facilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge-Area Antenna Included\u003c\/strong\u003e — The ANT 005 remote coaxial antenna extends transmission range up to 1,000 feet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete ADA Package\u003c\/strong\u003e — Neckloops for telecoil users and the IDP 008 wall plaque support compliance with 2010 ADA hearing assistance guidelines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScales with the Venue\u003c\/strong\u003e — The FM broadcast serves unlimited listeners, so receivers can be added without touching the head end.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 D transmitter, (12) FM R37 receivers, (12) EAR 022 surround earphones, (3) NKL 001 neckloops, (1) CHG 3512 12-bay charger, (12) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDante\u003c\/td\u003e\n\u003ctd\u003eYes — available on the FM T55 D transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Audio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable 14.4 VDC phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter frequency control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T IEEE 802.3, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on AA NiMH rechargeable; approx. 50 hrs on AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37 receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does this system connect to a Dante audio network?\u003c\/h3\u003e\u003cp\u003eThe T55 D transmitter joins the Dante network through standard network cabling and is routed like any Dante receive device, so the assistive listening feed can be assigned from Dante Controller alongside the rest of the venue's audio routing.\u003c\/p\u003e\u003ch3\u003eDoes Wi-Fi streaming replace the FM receivers?\u003c\/h3\u003e\u003cp\u003eNo — the two run in parallel. The 12 R37 receivers guarantee ADA-required hardware availability, while the Wi-Fi stream lets additional attendees listen on their own smartphones using the venue's existing wireless network.\u003c\/p\u003e\u003ch3\u003eWhat is involved in mounting the transmitter?\u003c\/h3\u003e\u003cp\u003eThe transmitter is one EIA rack unit high and half a rack space wide; the included RPK 005 panel kit secures it in a standard 19-inch rack. An optional RPK 006 kit mounts two half-rack units side by side.\u003c\/p\u003e\u003ch3\u003eHow are the receivers maintained between events?\u003c\/h3\u003e\u003cp\u003eReceivers drop into the included CHG 3512 12-bay charger with their NiMH batteries installed. A full charge yields roughly 32 hours of listening; alkaline AAs can substitute in a pinch for about 50 hours.\u003c\/p\u003e\u003ch3\u003eIs this system FCC compliant out of the box?\u003c\/h3\u003e\u003cp\u003eThe hardware is FCC approved, but the FCC requires professional installation with an approved FCC 15.203-compliant antenna. The included ANT 005 is compliant; the Williams AV Antenna Selection Install Guide covers alternatives such as the ANT 021, ANT 024, and ANT 025.\u003c\/p\u003e\u003ch3\u003eWhat warranty backs this package?\u003c\/h3\u003e\u003cp\u003eWilliams AV covers the transmitter with a two-year parts and labor warranty and the R37 receivers with a Lifetime PLUS limited warranty (earphones, headphones, and batteries excluded).\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739848769772,"sku":"FM 557-12 PRO D","price":4984.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-12-pro-d-fm-pro-system-package-12-r37-receivers-and-dante-creation-networks-20156.png?v=1757912544"},{"product_id":"williams-sound-fm-557-24-fm-system-package-24-r37-receivers","title":"Williams AV FM 557-24 – FM+ Dual FM and Wi-Fi System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-24 is a dual FM and Wi-Fi assistive listening system for mid- to large-sized venues, delivering ADA-compliant hearing assistance to every seat without dedicated installation accessories you may already own. The package combines the FM+ T55 transmitter with 24 PPA R37N FM receivers, surround earphones, neckloops, and an ADA wall plaque. Listeners can use the supplied body-pack receivers or stream the same audio to their own smartphones over the venue Wi-Fi network, making this large-area assistive listening system a practical fit for auditoriums and houses of worship.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM 557-24 centers on the FM+ T55 transmitter, which replaced the earlier T45 and added simultaneous Wi-Fi audio streaming alongside the proven 72 MHz-band FM broadcast — two delivery paths from one half-rack box. Program audio connects through a combination XLR\/1\/4-inch jack that accepts balanced or unbalanced mic or line-level signals with selectable phantom power, and DSP processing offers selectable compression and filtering to keep speech intelligible. The 3.12-inch OLED display walks operators through configuration, while the hosted web page and Telnet-over-Ethernet support allow remote monitoring and integration with room control systems. Each of the 24 PPA R37N receivers selects among 17 wideband channels between 72.1 and 75.9 MHz with a simple seek button, runs approximately 50 hours on the included AA alkaline batteries, and is covered by a Lifetime PLUS limited warranty. Twenty-four EAR 022 surround earphones and six NKL 001 neckloops accommodate both conventional listeners and hearing aid users with telecoils, and the FM broadcast itself supports an unlimited audience, so the system scales as attendance grows. This base package omits the antenna, chargers, and rack kit; venues that want a turnkey rack installation should consider the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-24-pro-fm-pro-system-package-24-r37-receivers\"\u003eFM 557-24 PRO package\u003c\/a\u003e with charging and mounting hardware included. Additional receivers, antennas, and accessories are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e. Note that the FCC requires professional installation with an approved FCC 15.203-compliant antenna, and Wi-Fi streaming relies on the venue's existing wireless network.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Listening Paths, One Transmitter\u003c\/strong\u003e — The FM+ T55 broadcasts to dedicated FM receivers and streams over venue Wi-Fi to smartphones simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 Body-Pack Receivers\u003c\/strong\u003e — The included PPA R37N receivers with EAR 022 surround earphones satisfy ADA receiver-count requirements for large assembly venues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels\u003c\/strong\u003e — Seek-button channel selection across 72.1–75.9 MHz allows interference-free operation alongside other systems in the facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Runtime\u003c\/strong\u003e — Each receiver operates roughly 50 hours on two AA alkaline batteries, which are included with the package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Neckloops Included\u003c\/strong\u003e — Six NKL 001 neckloops deliver audio directly to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression and high-pass\/low-pass filtering optimize the broadcast for speech intelligibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Management\u003c\/strong\u003e — A hosted web interface and Telnet control over Ethernet support remote configuration and third-party control integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Listener Capacity\u003c\/strong\u003e — The FM broadcast serves any number of receivers, so the system expands without replacing the transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque notifies visitors that hearing assistance is available, supporting 2010 ADA guideline compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (24) PPA R37N receivers, (24) EAR 022 surround earphones, (6) NKL 001 neckloops, (1) IDP 008 ADA wall plaque; AA alkaline batteries (BAT 001-2) included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (antenna sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (optional RPK 005\/RPK 006 kits)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life (R37N)\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is the difference between the FM 557-24 and the FM 557-24 PRO?\u003c\/h3\u003e\u003cp\u003eBoth packages share the same T55 transmitter and 24 R37N receivers. The PRO adds installation accessories — a remote coaxial antenna, rack panel kit, two 12-bay chargers, and NiMH rechargeable batteries — while this base package ships with alkaline batteries and no antenna or rack hardware.\u003c\/p\u003e\u003ch3\u003eDo I need to buy an antenna?\u003c\/h3\u003e\u003cp\u003eAn FCC 15.203-compliant antenna such as the ANT 005, ANT 021, ANT 024, or ANT 025 is required and is not included in this package. The FCC also requires professional installation; consult the Williams AV Antenna Selection Install Guide.\u003c\/p\u003e\u003ch3\u003eCan attendees listen on their phones?\u003c\/h3\u003e\u003cp\u003eYes. Once the transmitter is connected to the venue's Wi-Fi network, listeners can stream the audio to their smartphones, supplementing the 24 hardware receivers at no additional per-listener cost.\u003c\/p\u003e\u003ch3\u003eHow do the neckloops support hearing aid users?\u003c\/h3\u003e\u003cp\u003eThe NKL 001 neckloops plug into the R37N receiver and induce the audio signal magnetically into any hearing aid or cochlear implant with a telecoil, providing direct, clear coupling without earphones.\u003c\/p\u003e\u003ch3\u003eIs the receiver count expandable?\u003c\/h3\u003e\u003cp\u003eYes. The FM broadcast supports an unlimited number of listeners, so additional PPA R37N receivers can be added at any time without changes to the transmitter.\u003c\/p\u003e\u003ch3\u003eWhat warranty coverage applies?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a two-year parts and labor warranty; each R37N receiver is backed by a Lifetime PLUS limited warranty, excluding earphones, headphones, and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739850932460,"sku":"FM 557-24","price":5990.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-24-fm-system-package-24-r37-receivers-creation-networks-74029.png?v=1757912551"},{"product_id":"williams-sound-fm-557-24-pro-fm-pro-system-package-24-r37-receivers","title":"Williams AV FM 557-24 PRO – FM+ Assistive Listening System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-24 PRO is a large-area assistive listening system package sized for auditoriums, worship spaces, and other mid- to large-sized venues that must provide ADA-compliant hearing assistance. The FM+ T55 transmitter broadcasts on FM and streams over the venue Wi-Fi network simultaneously, while 24 PPA R37N body-pack receivers serve listeners who prefer dedicated hardware. The PRO package adds the installation accessories integrators expect — a remote coaxial antenna, rack panel kit, 12-bay chargers, and rechargeable batteries — so the system arrives rack-ready.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThis package is built around the FM+ T55 transmitter, the successor to the long-running T45 FM transmitter, which adds simultaneous Wi-Fi audio streaming for nearly the cost of a traditional FM-only system. The transmitter occupies half of one EIA rack space and mounts in a standard 19-inch rack using the included RPK 005 rack panel kit. Audio connects through a combination XLR\/1\/4-inch jack accepting balanced or unbalanced microphone or line-level sources, with selectable phantom power for condenser microphones. Onboard DSP provides selectable compression and high-pass\/low-pass filtering tuned for speech intelligibility, and a 3.12-inch OLED display plus a hosted web interface make setup and day-to-day monitoring straightforward. For control system integration, the unit supports Telnet commands over its rear-panel Ethernet port. Each of the 24 PPA R37N receivers seeks across 17 wideband channels between 72.1 and 75.9 MHz, includes an EAR 022 surround earphone, and runs roughly 32 hours per charge on the included NiMH batteries — two CHG 3512 12-bay drop-in chargers manage the entire fleet. Six NKL 001 neckloops support hearing aid wearers with telecoils, and the IDP 008 ADA plaque posts hearing assistance availability at the entrance. The ANT 005 remote coaxial antenna delivers transmission range up to 1,000 feet; FCC rules require professional installation with an approved antenna. If your venue also needs Dante network audio input, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-24-pro-d-fm-pro-system-package-24-r37-receivers-dante\"\u003eFM 557-24 PRO D Dante package\u003c\/a\u003e, or browse the complete \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e for receivers and accessories.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Broadcast\u003c\/strong\u003e — A single T55 transmitter serves FM body-pack receivers and smartphone listeners on the venue network at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-Receiver Fleet\u003c\/strong\u003e — Twenty-four PPA R37N receivers with surround earphones meet the receiver counts ADA guidelines call for in large assembly spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Charging Solution\u003c\/strong\u003e — Two CHG 3512 12-bay drop-in chargers and 24 sets of AA NiMH batteries eliminate disposable battery management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Install Kit\u003c\/strong\u003e — The RPK 005 rack panel kit and ANT 005 remote coaxial antenna prepare the system for a clean equipment-rack installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Wideband operation from 72.1 to 75.9 MHz lets multiple systems run side by side in multi-room facilities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression ratios and filter settings keep amplified speech clear for hearing-impaired listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb and Telnet Control\u003c\/strong\u003e — The hosted web page and Ethernet Telnet interface integrate with third-party room control systems for remote management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Support\u003c\/strong\u003e — Six NKL 001 neckloops couple audio directly to hearing aids and cochlear implants equipped with telecoils.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Expansion\u003c\/strong\u003e — The FM broadcast accommodates any number of additional receivers as audience demand grows.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 transmitter, (24) PPA R37N receivers, (24) EAR 022 surround earphones, (6) NKL 001 neckloops, (2) CHG 3512 12-bay chargers, (24) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Input\u003c\/td\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4 in. TRS, balanced\/unbalanced mic or line level, selectable phantom power (14.4 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions \/ Weight\u003c\/td\u003e\n\u003ctd\u003e8.45 x 8.25 x 1.72 in. (21.5 x 21 x 4.4 cm); 3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life (R37N)\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Frequency Response\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat audio sources can feed the transmitter?\u003c\/h3\u003e\u003cp\u003eThe T55 accepts balanced or unbalanced microphone or line-level audio through its combination XLR\/1\/4-inch input, with menu-adjustable input gain and selectable phantom power. It connects easily to a DSP output, mixer bus, or dedicated microphone.\u003c\/p\u003e\u003ch3\u003eHow does Wi-Fi listening work alongside the FM receivers?\u003c\/h3\u003e\u003cp\u003eThe transmitter joins the venue's existing Wi-Fi network and streams the same program audio to listeners' smartphones, while the FM broadcast serves the included R37N body-pack receivers. The system does not create its own network, so venue Wi-Fi must be in place first.\u003c\/p\u003e\u003ch3\u003eCan multiple FM 557 systems operate in the same building?\u003c\/h3\u003e\u003cp\u003eYes. With 17 selectable wideband channels between 72.1 and 75.9 MHz, several systems can run simultaneously in adjacent rooms as long as each is assigned a different channel.\u003c\/p\u003e\u003ch3\u003eDoes the package require professional installation?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires professional installation with an approved FCC 15.203-compliant antenna. The included ANT 005 is compliant; consult the Williams AV Antenna Selection Install Guide when planning the install.\u003c\/p\u003e\u003ch3\u003eHow is the system controlled within a larger AV installation?\u003c\/h3\u003e\u003cp\u003eBeyond front-panel OLED navigation, the transmitter hosts a configuration web page and accepts Telnet commands over Ethernet, allowing integration with third-party control processors for remote monitoring and management.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to this system?\u003c\/h3\u003e\u003cp\u003eThe transmitter is covered for two years parts and labor, and each PPA R37N receiver carries a Lifetime PLUS limited warranty, excluding earphones and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739851522284,"sku":"FM 557-24 PRO","price":8040.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-24-pro-fm-pro-system-package-24-r37-receivers-creation-networks-78801.png?v=1757912556"},{"product_id":"williams-sound-fm-557-24-pro-d-fm-pro-system-package-24-r37-receivers-dante","title":"Williams AV FM 557-24 PRO D – Dante FM+ Assistive Listening System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 557-24 PRO D is a Dante-enabled large-area assistive listening system built for mid- to large-sized venues that need ADA-compliant hearing assistance at scale. The package pairs the FM+ T55 D transmitter — which broadcasts over FM and Wi-Fi simultaneously — with 24 PPA R37N body-pack FM receivers, rechargeable battery infrastructure, and professional installation accessories. Because the transmitter accepts a Dante audio network input, integrators can feed program audio directly from a Dante-enabled DSP or mixer without analog conversion. It is a complete, rack-ready assistive listening package for auditoriums, houses of worship, and government assembly spaces.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eAt the core of the FM 557-24 PRO D is the FM+ T55 D transmitter, a half-rack-width unit that transmits on 17 selectable wideband channels between 72.1 and 75.9 MHz while simultaneously streaming audio over the venue's existing Wi-Fi network to smartphones running the listening app. The Dante input lets the transmitter sit on the audio network alongside the rest of a commercial AV system, while the combination XLR\/1\/4-inch input still accepts balanced mic or line-level sources with selectable phantom power. DSP-based audio processing with selectable compression ratios and high-pass\/low-pass filtering keeps speech intelligible for hearing-impaired listeners. A 3.12-inch OLED display, hosted web page, and Telnet-over-Ethernet control make the unit straightforward to configure and to integrate with third-party room control systems. The 24 included PPA R37N receivers tune across all 17 channels via a seek button, run up to 50 hours on alkaline cells or about 32 hours on the included NiMH rechargeables, and carry a Lifetime PLUS limited warranty. Two CHG 3512 12-bay drop-in chargers keep the full receiver fleet ready between events, and the ANT 005 remote coaxial antenna extends transmission range up to 1,000 feet. The RPK 005 rack panel kit mounts the transmitter in a standard 19-inch equipment rack, and the included IDP 008 ADA wall plaque signals hearing assistance availability to visitors. Note that FCC rules require professional installation with an approved FCC 15.203-compliant antenna, and the Wi-Fi stream requires an existing venue network. Smaller deployments can start with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-557-pro-d-fm-pro-system-package-4-r37-receivers-dante\"\u003eFM 557 PRO D four-receiver package\u003c\/a\u003e, and the full line of transmitters, receivers, and accessories is available in our \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Network Audio Input\u003c\/strong\u003e — The T55 D transmitter accepts audio directly from a Dante network, eliminating analog tie lines between the DSP and the assistive listening rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmission\u003c\/strong\u003e — One transmitter serves dedicated FM body-pack receivers and personal smartphones over the venue Wi-Fi network at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 R37N Receivers Included\u003c\/strong\u003e — Two dozen body-pack receivers with surround earphones and six neckloops cover large audiences and satisfy ADA receiver-count requirements for bigger venues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Battery Infrastructure\u003c\/strong\u003e — Two CHG 3512 12-bay chargers and 24 NiMH battery sets keep every receiver charged and deployable without consumable battery costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Wideband Channels\u003c\/strong\u003e — Operation between 72.1 and 75.9 MHz allows multiple systems to coexist in adjacent rooms without interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression and filter settings optimize speech intelligibility for listeners with hearing loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Control and Monitoring\u003c\/strong\u003e — A hosted web page and Telnet over Ethernet enable remote management and integration with third-party control processors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Mount Installation Kit\u003c\/strong\u003e — The RPK 005 panel kit mounts the half-rack transmitter in one EIA rack space alongside the rest of the AV rack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Coverage\u003c\/strong\u003e — The ANT 005 remote coaxial antenna supports a transmission range up to 1,000 feet for full-building coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Compliance Package\u003c\/strong\u003e — The included IDP 008 wall plaque and unlimited-listener FM broadcast help venues meet 2010 ADA hearing assistance guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Includes\u003c\/td\u003e\n\u003ctd\u003e(1) FM T55 D transmitter, (24) PPA R37N receivers, (24) EAR 022 surround earphones, (6) NKL 001 neckloops, (2) CHG 3512 12-bay chargers, (24) BAT 026-2 AA NiMH rechargeable batteries, (1) ANT 005 remote coaxial antenna, (1) IDP 008 ADA wall plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Inputs\u003c\/td\u003e\n\u003ctd\u003eDante network audio; combination 3-pin XLR \/ 1\/4 in. TRS for balanced\/unbalanced mic or line level with selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Processing\u003c\/td\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response (transmitter)\u003c\/td\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEthernet\u003c\/td\u003e\n\u003ctd\u003eRJ-45, 10\/100 Base-T, CAT 5e up to 328 ft (100 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Interface\u003c\/td\u003e\n\u003ctd\u003e3.12 in. OLED display; hosted web page; remote control and monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Mount\u003c\/td\u003e\n\u003ctd\u003eStandard 19 in. rack, one EIA space high, 1\/2 space wide (RPK 005 included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Dimensions\u003c\/td\u003e\n\u003ctd\u003e8.45 in. W x 8.25 in. D x 1.72 in. H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e3.2 lbs (1.45 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003eTFP 062 desktop transformer; 100–240 VAC input; 24 VDC, 750 mA output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Battery Life (R37N)\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on AA alkaline; approx. 32 hrs on AA NiMH rechargeable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Audio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max into 16 ohms; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-year parts and labor (transmitter); Lifetime PLUS limited warranty (R37N receivers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does the Dante input integrate with an existing AV system?\u003c\/h3\u003e\u003cp\u003eThe T55 D transmitter appears as a Dante receive device on the audio network, so you can route program audio from any Dante-enabled DSP, mixer, or paging system directly to the assistive listening transmitter over standard network cabling — no analog tie line required.\u003c\/p\u003e\u003ch3\u003eDoes the Wi-Fi streaming feature require special network hardware?\u003c\/h3\u003e\u003cp\u003eThe FM+ connects to the venue's existing Wi-Fi network; it does not generate its own. The network must be in place before the Wi-Fi audio stream can be used, and Williams AV publishes a WaveCAST networking guide with recommended configuration practices.\u003c\/p\u003e\u003ch3\u003eCan the system serve more than 24 listeners?\u003c\/h3\u003e\u003cp\u003eYes. The FM broadcast supports an unlimited number of receivers, and smartphone users can join over Wi-Fi. Additional PPA R37N receivers can be added at any time as audience needs grow.\u003c\/p\u003e\u003ch3\u003eIs professional installation required?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to be professionally installed with an approved FCC 15.203-compliant antenna (ANT 005, ANT 021, ANT 024, or ANT 025). Refer to the Williams AV Antenna Selection Install Guide during system design.\u003c\/p\u003e\u003ch3\u003eWhat warranty coverage is included?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a two-year parts and labor warranty, and the R37N receivers are covered by a Lifetime PLUS limited warranty (earphones, headphones, and batteries excluded).\u003c\/p\u003e\u003ch3\u003eDoes this package help meet ADA requirements?\u003c\/h3\u003e\u003cp\u003eYes. The system complies with 2010 ADA guidelines for hearing assistance, includes neckloops for hearing aid users with telecoils, and ships with an IDP 008 ADA wall plaque to post assistive listening availability.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739852177644,"sku":"FM 557-24 PRO D","price":8270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-557-24-pro-d-fm-pro-system-package-24-r37-receivers-and-dante-creation-networks-98171.png?v=1757912569"},{"product_id":"williams-sound-fm-558-fm-system-package-4-r38-receivers","title":"Williams AV FM 558 – FM+ Dual FM\/Wi-Fi System, 4 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558 is a turnkey assistive listening system that combines the FM+ C transmitter with four PPA R38N receivers for small venues. The transmitter broadcasts simultaneously over FM (72.1–75.9 MHz) and the facility's Wi-Fi network, giving classrooms, courtrooms, boardrooms, and small worship spaces an ADA-ready hearing assistance solution that also supports smartphone listening through the WaveCAST app. As the entry point to the FM 558 family, this base package suits venues that already have antennas, rack hardware, and chargers or plan to specify them separately.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ C transmitter streams real-time audio to both FM receivers and Wi-Fi devices from one half-rack chassis. Seventeen selectable wideband channels in the 72 MHz band allow multiple systems to coexist in one building — useful for multi-channel interpretation or adjacent rooms — and FM range reaches up to 1,000 feet with a compatible remote antenna such as the Williams AV ANT 005. The combination XLR\/1\/4-inch TRS input accepts balanced or unbalanced microphone or line-level sources with selectable phantom power, while DSP processing applies selectable compression and filtering to keep speech intelligible for hearing-impaired listeners. Configuration runs through the 3.12-inch OLED front panel or the hosted web page over Ethernet, and the transmitter integrates with third-party room control systems for managed AV environments.\u003c\/p\u003e\u003cp\u003eThe four included PPA R38N receivers are handheld body-pack units with 1-inch OLED displays, menu-driven tuning, channel lock, and detachable belt clips. They run approximately 50 hours on two AA alkaline batteries or 32 hours on NiMH rechargeables, with bottom charging contacts compatible with Williams AV CHG-series drop-in chargers. Audio outputs through a 3.5 mm stereo jack supporting earphones, headphones, or neckloops for telecoil hearing aid users, and the Wi-Fi stream places no cap on the number of app-based listeners.\u003c\/p\u003e\u003cp\u003eFor a fully accessorized deployment with antenna, chargers, neckloops, rack kit, and ADA signage included, step up to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-pro-fm-pro-system-package-4-r38-receivers\"\u003eFM 558 PRO package\u003c\/a\u003e, or compare every configuration in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM and Wi-Fi in One Transmitter\u003c\/strong\u003e — The FM+ C broadcasts to dedicated receivers and streams to the WaveCAST app simultaneously, serving every listener type.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour R38N OLED Receivers\u003c\/strong\u003e — Handheld receivers provide menu-based access to 17 wideband channels with channel lock and bright OLED displays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Multiple FM 558 systems can operate in the same facility for interpretation channels or adjacent rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression and high-pass\/low-pass filtering optimize clarity for assistive listening feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro Analog Input\u003c\/strong\u003e — The XLR\/TRS combo jack handles mic or line sources, balanced or unbalanced, with selectable phantom power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Wi-Fi Listeners\u003c\/strong\u003e — App-based streaming over the venue network scales capacity beyond the included receivers at no added hardware cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-Rack Form Factor\u003c\/strong\u003e — The 1RU, half-width chassis mounts in standard 19-inch racks with optional RPK 005 or RPK 006 kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Receiver Battery Life\u003c\/strong\u003e — Up to 50 hours on alkaline or 32 hours on NiMH batteries keeps receivers in service across multiple events.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ C (FM T55 C), dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, mic or line, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Harmonic Distortion\u003c\/th\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e4x PPA R38N, 1\" OLED display, channel lock, 3.5 mm stereo jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCharger Compatibility\u003c\/th\u003e\n\u003ctd\u003eCHG 3512 and CHG 3502 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005\/006 kits optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is included in the FM 558 base package?\u003c\/h3\u003e\u003cp\u003eThe FM+ C dual FM and Wi-Fi transmitter and four PPA R38N receivers. Antennas, rack kits, chargers, neckloops, and ADA signage are available separately or bundled in the FM 558 PRO package.\u003c\/p\u003e\u003ch3\u003eDo I need an antenna?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to operate with approved FCC 15.203 compliant antennas — ANT 005, ANT 021, ANT 024, or ANT 025 — and to be professionally installed.\u003c\/p\u003e\u003ch3\u003eHow does Wi-Fi listening work?\u003c\/h3\u003e\u003cp\u003eThe transmitter connects via Ethernet to the venue's existing Wi-Fi network and streams audio to the WaveCAST app on listeners' own devices. It does not create its own wireless network.\u003c\/p\u003e\u003ch3\u003eCan hearing aid users connect to the receivers?\u003c\/h3\u003e\u003cp\u003eYes. The R38N's 3.5 mm stereo jack accepts neckloops such as the Williams AV NKL 001, which couple inductively to telecoil-equipped hearing aids and cochlear implants.\u003c\/p\u003e\u003ch3\u003eCan I run multiple systems in one building?\u003c\/h3\u003e\u003cp\u003eYes. With 17 selectable wideband channels, several FM 558 transmitters can operate simultaneously for interpretation channels or separate rooms without interference.\u003c\/p\u003e\u003ch3\u003eWhat warranty comes with the system?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a 2-year parts and labor warranty; the R38N receivers carry a Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739853258988,"sku":"FM 558","price":2550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-fm-system-package-4-r38-receivers-creation-networks-94053.png?v=1757912575"},{"product_id":"williams-sound-fm-558-pro-fm-pro-system-package-4-r38-receivers","title":"Williams AV FM 558 PRO – FM+ Listening System, 4 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558 PRO is a small-venue assistive listening system that bundles the FM+ C dual FM and Wi-Fi transmitter, four PPA R38N receivers, and the essential installation accessories into one package. It is built for courtrooms, classrooms, boardrooms, and small houses of worship that need ADA-compliant hearing assistance, language interpretation, or audio description without sourcing antennas, chargers, and signage separately. The transmitter broadcasts simultaneously over FM and the venue's Wi-Fi network, so listeners can use a supplied receiver or their own smartphone with the WaveCAST app.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe easy-to-install FM+ C transmitter delivers real-time FM audio across 17 selectable wideband channels (72.1–75.9 MHz) while streaming the same program to Wi-Fi listeners. Its DSP engine offers selectable compression and high-pass\/low-pass filtering for clear, intelligible speech, and a combination XLR\/1\/4-inch TRS input with selectable phantom power accepts the room's microphone or line-level feed. The half-rack chassis mounts in a standard 19-inch rack using the included RPK 005 panel kit, and the 3.12-inch OLED display, hosted web page, and third-party room control compatibility cover local and remote configuration.\u003c\/p\u003e\u003cp\u003eEach of the four R38N handheld receivers carries a bright 1-inch OLED screen for menu-based channel selection, a channel lock to keep loaner units on the house frequency, and a detachable belt clip. Two BAT KT6 two-bay chargers and NiMH rechargeable batteries keep the receivers ready for roughly 32 hours per charge — or swap in AA alkalines for up to 50 hours. Four EAR 022 surround earphones serve general listeners, while two NKL 001 neckloops support guests with telecoil hearing aids. The ANT 005 remote coaxial antenna provides FM coverage up to 1,000 feet, and the IDP 008 ADA wall plaque announces assistive listening availability at the entrance.\u003c\/p\u003e\u003cp\u003eNeed Dante network audio integration? The \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-pro-d-fm-558-pro-fm-audio-webpage-fm-plus-dante-rear-panel-fm-pro-system-package-4-r38-receivers-dante\"\u003eFM 558 PRO D\u003c\/a\u003e adds a Dante-enabled transmitter to the identical kit. Larger venues should look at the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers\"\u003e12-receiver FM 558-12 PRO\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmission\u003c\/strong\u003e — A single half-rack transmitter serves dedicated FM receivers and unlimited WaveCAST app listeners on the venue network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour R38N OLED Receivers\u003c\/strong\u003e — Handheld receivers tune across 17 preset wideband frequencies with channel lock and a bright OLED display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnkey Installation Kit\u003c\/strong\u003e — The ANT 005 antenna, RPK 005 rack panel kit, BAT KT6 chargers, earphones, neckloops, and ADA plaque ship in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Support\u003c\/strong\u003e — Included NKL 001 neckloops couple audio inductively to telecoil hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression and filter controls optimize the feed for speech intelligibility in assistive listening applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Use Cases\u003c\/strong\u003e — The same hardware supports hearing assistance, language interpretation, and audio description channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Power Included\u003c\/strong\u003e — Two-bay drop-in chargers and NiMH batteries deliver about 32 hours of receiver runtime per charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Remote Management\u003c\/strong\u003e — The hosted web page over Ethernet enables remote monitoring and third-party room control integration.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558 PRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ C (FM T55 C), dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with included ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, mic or line, selectable 14.4 VDC phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e4x PPA R38N, 1\" OLED display, channel lock, belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e(1) FM T55 C transmitter, (4) PPA R38N receivers, (4) EAR 022 earphones, (2) NKL 001 neckloops, (2) BAT KT6 two-bay chargers with batteries, (1) ANT 005 antenna, (1) IDP 008 ADA plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat audio source does the transmitter need?\u003c\/h3\u003e\u003cp\u003eA microphone or line-level feed from the room's audio system, connected to the rear XLR\/TRS combo input. Selectable phantom power supports condenser microphones for rooms without a mixer.\u003c\/p\u003e\u003ch3\u003eHow do smartphone users listen?\u003c\/h3\u003e\u003cp\u003eThe transmitter streams the program over the venue's existing Wi-Fi network to the free WaveCAST app, with no limit on the number of app listeners.\u003c\/p\u003e\u003ch3\u003eDoes this package meet ADA requirements for small venues?\u003c\/h3\u003e\u003cp\u003eIt provides receivers, telecoil neckloops, and the required availability signage. Verify the minimum receiver count for your seating capacity against ADA assistive listening tables; additional receivers can be added at any time.\u003c\/p\u003e\u003ch3\u003eIs professional installation required?\u003c\/h3\u003e\u003cp\u003eYes. FCC rules require professional installation with approved FCC 15.203 compliant antennas, such as the included ANT 005 remote coaxial antenna.\u003c\/p\u003e\u003ch3\u003eCan the system expand as the venue grows?\u003c\/h3\u003e\u003cp\u003eYes. Add PPA R38N receivers as needed; FM listener capacity on the selected channel is unlimited, and the Wi-Fi stream already supports unlimited app users.\u003c\/p\u003e\u003ch3\u003eWhat is the warranty?\u003c\/h3\u003e\u003cp\u003eThe transmitter is covered for 2 years parts and labor; R38N receivers carry the Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739853652204,"sku":"FM 558 PRO","price":3065.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-pro-fm-pro-system-package-4-r38-receivers-creation-networks-22992.png?v=1757912581"},{"product_id":"williams-sound-fm-558-pro-d-fm-558-pro-fm-audio-webpage-fm-plus-dante-rear-panel-fm-pro-system-package-4-r38-receivers-dante","title":"Williams AV FM 558 PRO D – Dante FM+ System, 4 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558 PRO D is a small-venue assistive listening system built around a Dante-enabled FM+ C transmitter, four PPA R38N receivers, and a complete installation accessory kit. It serves courtrooms, boardrooms, classrooms, and small worship spaces that need ADA-compliant hearing assistance, language interpretation, or audio description, with the Dante input pulling program audio directly from the room's networked DSP or console. Dual FM (72.1–75.9 MHz) and Wi-Fi transmission means listeners can use the supplied receivers or stream to their own phones via the WaveCAST app.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe package centers on the FM T55 C D transmitter, a half-rack unit that mounts in a standard 19-inch rack with the included RPK 005 panel kit. As a Dante receive device, it subscribes to a channel from any Dante-enabled source over the existing audio network — no analog tie line required — while a combination XLR\/1\/4-inch TRS input with selectable phantom power remains available for microphone or line-level sources. DSP processing applies selectable compression and high-pass\/low-pass filtering for maximum speech clarity, and the unit integrates with third-party room control systems for managed operation alongside its 3.12-inch OLED display and hosted web page.\u003c\/p\u003e\u003cp\u003eThe four PPA R38N handheld receivers each feature a bright 1-inch OLED screen, menu-based selection from 17 preset wideband frequencies, channel lock, and a detachable belt clip. Two BAT KT6 two-bay chargers with NiMH rechargeable batteries keep the receivers ready, with roughly 32 hours of runtime per charge (or up to 50 hours on disposable alkalines). Four EAR 022 surround earphones and two NKL 001 neckloops accommodate listeners with and without telecoil hearing aids, the ANT 005 remote coaxial antenna extends FM range to 1,000 feet, and the IDP 008 ADA wall plaque posts assistive listening availability at the room entrance. Because the system supports unlimited listeners over both FM and Wi-Fi, the four receivers are a starting point rather than a ceiling.\u003c\/p\u003e\u003cp\u003eIf Dante is not part of your audio design, the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-pro-fm-pro-system-package-4-r38-receivers\"\u003eFM 558 PRO analog package\u003c\/a\u003e offers the same kit with a standard transmitter. Compare all configurations in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante-Enabled Transmitter\u003c\/strong\u003e — The FM T55 C D accepts program audio over the Dante network, integrating directly with networked DSPs, consoles, and conferencing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Broadcast\u003c\/strong\u003e — One transmitter serves the included FM receivers and an unlimited number of WaveCAST app listeners simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour R38N OLED Receivers\u003c\/strong\u003e — Handheld receivers offer 17 wideband channels, channel lock, and easy menu tuning on a 1-inch OLED display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Install Kit\u003c\/strong\u003e — ANT 005 antenna, RPK 005 rack panel kit, BAT KT6 chargers with batteries, earphones, neckloops, and an ADA plaque are all in the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Hearing Aid Support\u003c\/strong\u003e — Two NKL 001 neckloops couple receiver audio to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Purpose Audio Delivery\u003c\/strong\u003e — The same system handles assistive listening, language interpretation, and audio description feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Processing\u003c\/strong\u003e — Selectable compression and filter settings keep speech intelligible for hearing-impaired listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoom Control Integration\u003c\/strong\u003e — Hosted web page management and third-party control compatibility fit the transmitter into managed AV environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558 PRO D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM T55 C D (Dante-enabled), dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with included ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Inputs\u003c\/th\u003e\n\u003ctd\u003eDante network audio; combination XLR \/ 1\/4\" TRS mic or line, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e4x PPA R38N, 1\" OLED display, channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePackage Contents\u003c\/th\u003e\n\u003ctd\u003e(1) FM T55 C D transmitter, (4) PPA R38N receivers, (4) EAR 022 earphones, (2) NKL 001 neckloops, (2) BAT KT6 two-bay chargers with batteries, (1) ANT 005 antenna, (1) IDP 008 ADA plaque, (1) RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does the Dante input connect to my audio system?\u003c\/h3\u003e\u003cp\u003eThe FM T55 C D appears as a Dante receive device on the network. Route a channel to it in Dante Controller from any Dante-enabled DSP, mixer, or matrix — no analog wiring needed.\u003c\/p\u003e\u003ch3\u003eCan the system be used for language interpretation?\u003c\/h3\u003e\u003cp\u003eYes. Feed an interpreter channel into the transmitter and listeners tune their R38N receivers or WaveCAST app to that broadcast, making it suitable for interpretation and audio description as well as hearing assistance.\u003c\/p\u003e\u003ch3\u003eIs four receivers enough for ADA compliance?\u003c\/h3\u003e\u003cp\u003eIt depends on seating capacity. ADA tables specify minimum receiver counts by venue size; four receivers typically cover small rooms, and additional R38N receivers can be added at any time.\u003c\/p\u003e\u003ch3\u003eDoes the transmitter require professional installation?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires professional installation with approved FCC 15.203 compliant antennas; the included ANT 005 meets this requirement.\u003c\/p\u003e\u003ch3\u003eDoes Wi-Fi streaming need extra hardware?\u003c\/h3\u003e\u003cp\u003eThe transmitter connects to the venue's existing Wi-Fi network over Ethernet. It does not create its own network, so the facility wireless infrastructure must be in place first.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to this system?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a 2-year parts and labor warranty; the R38N receivers are covered by the Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739854536940,"sku":"FM 558 PRO D","price":3315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-pro-d-fm-558-pro-fm-audio-webpage-fm-plus-dante-rear-panel-fm-pro-system-package-4-r38-receivers-and-dante-creation-networks-42889.png?v=1757912587"},{"product_id":"williams-sound-fm-558-12-fm-system-package-12-r38-receivers","title":"Williams AV FM 558-12 – FM+ Dual FM\/Wi-Fi System, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-12 is a mid-size venue assistive listening system pairing the FM+ T55C dual FM and Wi-Fi transmitter with 12 PPA R38N receivers. It delivers ADA-compliant hearing assistance for lecture halls, courtrooms, training rooms, and worship spaces, broadcasting simultaneously to dedicated FM receivers and to smartphones running the WaveCAST app on the venue network. This base system package suits integrators who specify antennas, chargers, and mounting hardware separately or already have that infrastructure in the rack.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ T55C transmits on 17 selectable wideband channels in the 72.1–75.9 MHz band, reaching up to 1,000 feet with a compatible remote antenna such as the Williams AV ANT 005. At the same time, it streams identical audio over the facility's Wi-Fi network, so total listener capacity is never limited by the hardware receiver count. Audio enters through a combination XLR\/1\/4-inch TRS jack that handles balanced or unbalanced microphone or line-level sources with selectable phantom power, and DSP processing offers selectable compression and high-pass\/low-pass filtering for clear, intelligible speech. The half-rack chassis fits standard 19-inch racks with optional RPK 005 or RPK 006 mounting kits, and configuration runs through a 3.12-inch OLED front panel or the unit's hosted web page over Ethernet, including third-party room control integration.\u003c\/p\u003e\u003cp\u003eThe 12 included PPA R38N receivers are body-pack units with 1-inch OLED displays, menu-based channel selection, channel lock, and detachable belt clips. They run approximately 50 hours on two AA alkaline batteries or 32 hours on NiMH rechargeables, and bottom-mounted charging contacts make them compatible with CHG 3512 and CHG 3502 drop-in chargers if the venue adds charging stations. Receiver audio outputs through a 3.5 mm stereo jack that supports earphones, headphones, or neckloops for telecoil hearing aid users.\u003c\/p\u003e\u003cp\u003eFor a fully outfitted deployment with antenna, chargers, neckloops, rack kit, and ADA signage in the box, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers\"\u003eFM 558-12 PRO package\u003c\/a\u003e, or browse all systems in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM and Wi-Fi from One Chassis\u003c\/strong\u003e — The FM+ T55C feeds the included FM receivers and unlimited WaveCAST app users simultaneously, covering every listener type in the room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 R38N OLED Receivers\u003c\/strong\u003e — Each receiver provides 17-channel menu tuning, channel lock, and a bright 1-inch OLED display for quick, error-free operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Conditioning\u003c\/strong\u003e — Selectable compression ratios and filter controls keep speech intelligible for hearing-impaired audiences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePro-Grade Analog Input\u003c\/strong\u003e — The XLR\/TRS combo jack accepts mic or line sources, balanced or unbalanced, with selectable phantom power and 1 dB gain adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Mount Half-Rack Design\u003c\/strong\u003e — One or two transmitters mount in a single 19-inch rack space with optional RPK 005\/006 kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Runtime\u003c\/strong\u003e — Receivers run up to 50 hours on alkaline or 32 hours on NiMH batteries, with drop-in charger compatibility for fleet management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Remote Management\u003c\/strong\u003e — The hosted web page over RJ-45 Ethernet supports remote control, monitoring, and room control system integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScalable Listener Capacity\u003c\/strong\u003e — Unlimited Wi-Fi app listeners and expandable FM receiver counts let the system grow with the venue.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558-12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ T55C, dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, mic or line, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTotal Harmonic Distortion\u003c\/th\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e12x PPA R38N, 1\" OLED display, channel lock, 3.5 mm stereo jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCharger Compatibility\u003c\/th\u003e\n\u003ctd\u003eCHG 3512 and CHG 3502 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005\/006 kits optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat else do I need to complete the installation?\u003c\/h3\u003e\u003cp\u003eAn FCC 15.203 compliant antenna (such as the ANT 005), a rack mounting kit if rack installation is required, and chargers if you use rechargeable batteries. The FM 558-12 PRO package bundles all of these.\u003c\/p\u003e\u003ch3\u003eDoes this system meet ADA requirements for assistive listening?\u003c\/h3\u003e\u003cp\u003eIt provides the FM receivers and Wi-Fi listening that form the core of an ADA-compliant solution. Add neckloops for telecoil users and post availability signage; verify receiver counts against ADA seating-capacity tables.\u003c\/p\u003e\u003ch3\u003eCan the Wi-Fi stream and FM run at the same time?\u003c\/h3\u003e\u003cp\u003eYes. The transmitter broadcasts both transports simultaneously from the same audio input, so hardware receiver users and app listeners hear the same program.\u003c\/p\u003e\u003ch3\u003eWhat network does the Wi-Fi streaming use?\u003c\/h3\u003e\u003cp\u003eThe transmitter connects via Ethernet to the venue's existing Wi-Fi network; it does not generate its own wireless network.\u003c\/p\u003e\u003ch3\u003eIs professional installation mandatory?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires professional installation and the use of approved compliant antennas with this transmitter.\u003c\/p\u003e\u003ch3\u003eHow long is the warranty?\u003c\/h3\u003e\u003cp\u003eThe transmitter is warrantied for 2 years parts and labor; R38N receivers carry a Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739855388908,"sku":"FM 558-12","price":4415.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-12-fm-system-package-12-r38-receivers-creation-networks-55533.png?v=1757912593"},{"product_id":"williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers","title":"Williams AV FM 558-12 PRO – FM+ Listening System, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-12 PRO is an assistive listening system for mid-size venues, combining the FM+ dual FM and Wi-Fi transmitter with 12 PPA R38N receivers and a professional installation accessory kit. It is a practical specification for lecture halls, council chambers, courtrooms, and houses of worship that need ADA-compliant hearing assistance with managed receiver checkout plus open smartphone listening over the WaveCAST app. Everything needed for a standard commercial install — antenna, rack panel, chargers, neckloops, and ADA signage — ships in the package.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ transmitter broadcasts on 17 selectable wideband FM channels between 72.1 and 75.9 MHz while simultaneously streaming the same audio to the facility Wi-Fi network. Installers land a balanced or unbalanced microphone or line-level feed on the rear XLR\/1\/4-inch TRS combo input — with selectable phantom power for condenser microphones — and dial in the signal using 1 dB gain steps and a 10-LED level meter. DSP processing with selectable compression ratios and high-pass\/low-pass filters tailors the feed for hearing-impaired listeners, and the half-rack chassis mounts in a standard 19-inch rack using the included RPK 005 panel kit. A 3.12-inch OLED display, hosted web page, and third-party room control support handle setup and ongoing management.\u003c\/p\u003e\u003cp\u003eEach of the 12 PPA R38N receivers features a 1-inch OLED display, menu-driven channel selection with channel lock, a detachable belt clip, and a 3.5 mm stereo output jack. Battery life reaches roughly 50 hours on AA alkalines or 32 hours on the NiMH rechargeables that charge in the included two-bay charger kits. EAR 022 surround earphones and NKL 001 neckloops are supplied so the venue can serve listeners with or without telecoil-equipped hearing aids, and the ANT 005 remote coaxial antenna pushes FM coverage out to 1,000 feet. The IDP 008 wall plaque announces assistive listening availability at the entrance, satisfying common ADA posting practice.\u003c\/p\u003e\u003cp\u003eVenues running Dante audio networks should consider the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-12-pro-d-fm-pro-system-package-12-r38-receivers-and-dante\"\u003eFM 558-12 PRO D with Dante input\u003c\/a\u003e. Larger rooms can step up to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-24-pro-fm-pro-system-package-24-r38-receivers\"\u003e24-receiver FM 558-24 PRO\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Transmission\u003c\/strong\u003e — A single half-rack transmitter serves the 12 included FM receivers and unlimited WaveCAST app listeners on the venue network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 OLED Body-Pack Receivers\u003c\/strong\u003e — PPA R38N receivers deliver menu-based tuning across 17 wideband channels with channel lock for controlled deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTurnkey PRO Accessory Kit\u003c\/strong\u003e — Antenna, rack panel kit, chargers with rechargeable batteries, earphones, neckloops, and ADA signage are included for a complete install.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Compatibility\u003c\/strong\u003e — Included NKL 001 neckloops couple audio magnetically to telecoil hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression and filter settings improve speech intelligibility for assistive listening and interpretation feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Commissioning\u003c\/strong\u003e — A 10-LED level meter, 1 dB input gain steps, and selectable phantom power streamline alignment with the house audio system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb-Based Remote Control\u003c\/strong\u003e — The hosted web page over RJ-45 Ethernet enables monitoring, configuration, and room control integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended FM Range\u003c\/strong\u003e — The included ANT 005 remote coaxial antenna provides coverage up to 1,000 feet.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558-12 PRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ (FM T55C), dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with included ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, mic or line, selectable 14.4 VDC phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Gain\u003c\/th\u003e\n\u003ctd\u003e0 to -50 dB, adjustable in 1 dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e12x PPA R38N, 1\" OLED display, channel lock, belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Accessories\u003c\/th\u003e\n\u003ctd\u003eEAR 022 earphones, NKL 001 neckloops, two-bay chargers with NiMH batteries, ANT 005 antenna, IDP 008 ADA plaque, RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat distinguishes the PRO package from the base FM 558-12?\u003c\/h3\u003e\u003cp\u003eThe PRO adds the professional installation accessories — ANT 005 antenna, RPK 005 rack panel kit, chargers with rechargeable batteries, neckloops, and IDP 008 ADA plaque — to the transmitter and 12 receivers.\u003c\/p\u003e\u003ch3\u003eHow do listeners without a receiver hear the audio?\u003c\/h3\u003e\u003cp\u003eThe transmitter streams the same program over the venue's Wi-Fi network to the free WaveCAST app, with no cap on the number of smartphone listeners.\u003c\/p\u003e\u003ch3\u003eDoes the system require professional installation?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to be professionally installed and used with approved FCC 15.203 compliant antennas, such as the included ANT 005.\u003c\/p\u003e\u003ch3\u003eWill the receivers work with hearing aids?\u003c\/h3\u003e\u003cp\u003eYes. The included NKL 001 neckloops plug into the receiver's 3.5 mm jack and couple inductively to any telecoil-equipped hearing aid or cochlear implant.\u003c\/p\u003e\u003ch3\u003eCan the system be expanded later?\u003c\/h3\u003e\u003cp\u003eYes. Additional PPA R38N receivers can be added at any time, and FM listener count on the selected channel is unlimited.\u003c\/p\u003e\u003ch3\u003eWhat warranty is provided?\u003c\/h3\u003e\u003cp\u003eWilliams AV covers the transmitter for 2 years parts and labor; receivers carry the Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739855585516,"sku":"FM 558-12 PRO","price":5705.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers-creation-networks-19077.png?v=1757912600"},{"product_id":"williams-sound-fm-558-12-pro-d-fm-pro-system-package-12-r38-receivers-and-dante","title":"Williams AV FM 558-12 PRO D – Dante FM+ System, 12 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-12 PRO D is a mid-size venue assistive listening system that pairs a Dante-enabled FM+ transmitter with 12 PPA R38N receivers and professional installation accessories. Designed for council chambers, courtrooms, lecture halls, and mid-size worship spaces with networked audio infrastructure, it broadcasts ADA-compliant hearing assistance over FM (72.1–75.9 MHz) and Wi-Fi simultaneously. The Dante input takes a channel straight from the room's DSP or console over the audio network, removing the need for an analog tie line to the assistive listening rack.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe Dante-enabled FM+ transmitter at the core of this package occupies half a rack unit and mounts with the included RPK 005 rack panel kit. In addition to its Dante network audio input, it provides a combination XLR\/1\/4-inch TRS jack for balanced or unbalanced microphone or line-level sources with selectable phantom power, so the system can be commissioned even before the Dante routing is finalized. Onboard DSP applies selectable compression and high-pass\/low-pass filtering to maximize speech intelligibility, and the 3.12-inch OLED display, hosted web page, and third-party room control compatibility give integrators multiple paths for configuration and monitoring.\u003c\/p\u003e\u003cp\u003eThe 12 PPA R38N receivers each carry a 1-inch OLED display with menu-based access to all 17 wideband channels and a channel lock function that keeps loaner units on the house frequency. Included two-bay chargers with NiMH rechargeable batteries keep the fleet ready, while EAR 022 surround earphones and NKL 001 neckloops cover listeners with and without telecoil hearing aids. The ANT 005 remote coaxial antenna extends FM coverage up to 1,000 feet, and the IDP 008 ADA wall plaque posts the required assistive listening notice at the room entrance. Listeners beyond the 12 hardware receivers can join over Wi-Fi using the WaveCAST app, so capacity is never capped by receiver count.\u003c\/p\u003e\u003cp\u003eFor venues without Dante infrastructure, the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers\"\u003eFM 558-12 PRO analog version\u003c\/a\u003e delivers the same package with a standard FM+ transmitter. See the full range in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante Audio Network Input\u003c\/strong\u003e — The transmitter subscribes to a Dante channel from the room DSP or console, simplifying integration in networked AV systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi Output\u003c\/strong\u003e — One unit feeds the 12 included FM receivers and an unlimited number of WaveCAST app listeners simultaneously.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 R38N OLED Receivers\u003c\/strong\u003e — Body-pack receivers offer 17 wideband channels, channel lock, and up to 50 hours of battery life for managed distribution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete PRO Accessory Kit\u003c\/strong\u003e — Remote coaxial antenna, rack panel kit, chargers with rechargeable batteries, neckloops, earphones, and ADA signage are all included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Hearing Aid Support\u003c\/strong\u003e — NKL 001 neckloops couple receiver audio magnetically to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Speech Optimization\u003c\/strong\u003e — Selectable compression and filtering shape the feed for clear speech in assistive listening and interpretation applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Web Management\u003c\/strong\u003e — The hosted web interface over Ethernet supports remote monitoring and integration with third-party room control platforms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000 ft FM Coverage\u003c\/strong\u003e — The included ANT 005 antenna provides FM range up to 1,000 feet for full coverage of mid-size and large rooms.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eBoardroom\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558-12 PRO D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eDante-enabled FM+ (FM T55 C D), dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with included ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Inputs\u003c\/th\u003e\n\u003ctd\u003eDante network audio; combination XLR \/ 1\/4\" TRS mic or line, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceivers\u003c\/th\u003e\n\u003ctd\u003e12x PPA R38N, 1\" OLED display, channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005 kit included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Accessories\u003c\/th\u003e\n\u003ctd\u003eEAR 022 earphones, NKL 001 neckloops, two-bay chargers with NiMH batteries, ANT 005 antenna, IDP 008 ADA plaque, RPK 005 rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow is the Dante input configured?\u003c\/h3\u003e\u003cp\u003eThe transmitter appears as a Dante receive device on the audio network. Route a channel to it in Dante Controller from any Dante-enabled source, such as a DSP, console, or matrix processor.\u003c\/p\u003e\u003ch3\u003eCan I use the analog input and Dante on the same unit?\u003c\/h3\u003e\u003cp\u003eThe transmitter provides both a Dante network input and an XLR\/TRS analog combo input, giving integrators flexibility in how the program feed is delivered during and after commissioning.\u003c\/p\u003e\u003ch3\u003eDoes this package satisfy ADA assistive listening requirements?\u003c\/h3\u003e\u003cp\u003eIt supplies FM receivers, neckloops for hearing aid telecoil coupling, and the IDP 008 availability plaque. Confirm the required receiver count for your venue's seating capacity against ADA guidelines.\u003c\/p\u003e\u003ch3\u003eIs professional installation required?\u003c\/h3\u003e\u003cp\u003eYes. FCC rules require the transmitter to be professionally installed and operated with approved FCC 15.203 compliant antennas, such as the included ANT 005.\u003c\/p\u003e\u003ch3\u003eCan audience members listen on their phones?\u003c\/h3\u003e\u003cp\u003eYes. The transmitter streams the same audio over the venue's Wi-Fi network to the WaveCAST app, with no limit on the number of app listeners.\u003c\/p\u003e\u003ch3\u003eWhat warranty coverage is included?\u003c\/h3\u003e\u003cp\u003eThe transmitter carries a 2-year parts and labor warranty; the R38N receivers carry Williams AV's Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739856044268,"sku":"FM 558-12 PRO D","price":5985.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-12-pro-d-fm-pro-system-package-12-r38-receivers-and-dante-creation-networks-52439.png?v=1757912613"},{"product_id":"williams-sound-fm-558-24-fm-system-package-24-r38-receivers","title":"Williams AV FM 558-24 – FM+ Dual FM\/Wi-Fi System, 24 Receivers","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-24 is a large-area assistive listening system that combines the FM+ T55C dual FM and Wi-Fi transmitter with 24 PPA R38N receivers. It gives auditoriums, large lecture halls, and worship spaces an ADA-compliant hearing assistance solution that serves both dedicated FM receivers and unlimited smartphone listeners on the WaveCAST app. This is the core system package — transmitter and receivers — for venues that already have antennas, chargers, and rack hardware or prefer to specify those separately.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe FM+ T55C transmitter broadcasts the same program audio over 17 selectable wideband FM channels (72.1–75.9 MHz) and, simultaneously, as a Wi-Fi audio stream on the facility network. DSP-based processing with selectable compression and high-pass\/low-pass filtering keeps speech clear for hearing-impaired listeners, while a combination XLR\/1\/4-inch TRS input with selectable phantom power accepts the venue's microphone or line-level feed. The half-rack chassis fits a standard 19-inch rack (one or two units per rack space with optional RPK 005\/RPK 006 kits), and a 3.12-inch OLED display plus a hosted web page handle local and remote configuration, including integration with third-party room control systems over Ethernet.\u003c\/p\u003e\u003cp\u003eEach of the 24 PPA R38N receivers is a body-pack unit with a 1-inch OLED display, menu-driven channel selection, channel lock, and a detachable belt clip. Receivers operate up to 50 hours on two AA alkaline batteries or 32 hours on NiMH rechargeables, and their bottom charging contacts work with Williams AV CHG 3512 and CHG 3502 drop-in chargers for venues that add charging infrastructure later. Because the Wi-Fi stream carries no listener limit, total audience capacity is not capped by the receiver count — a practical advantage for overflow events.\u003c\/p\u003e\u003cp\u003eIf you want the full turnkey kit with antenna, chargers, rack panel, neckloops, and ADA signage included, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-24-pro-fm-pro-system-package-24-r38-receivers\"\u003eFM 558-24 PRO package\u003c\/a\u003e, or compare the entire \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV lineup\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Transport Broadcasting\u003c\/strong\u003e — One transmitter delivers FM audio to body-pack receivers and a Wi-Fi stream to the WaveCAST smartphone app at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 OLED Receivers Included\u003c\/strong\u003e — PPA R38N receivers provide menu-based tuning across 17 wideband channels with channel lock for managed venue deployments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDSP Audio Processing\u003c\/strong\u003e — Selectable compression ratios and filter controls optimize intelligibility for assistive listening, interpretation, or audio description feeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Analog Input\u003c\/strong\u003e — The XLR\/TRS combo jack accepts balanced or unbalanced mic or line signals with selectable phantom power and 1 dB gain steps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlimited Wi-Fi Listeners\u003c\/strong\u003e — App-based listening over the venue network scales audience capacity beyond the included hardware receivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Mount Form Factor\u003c\/strong\u003e — The half-rack 1RU chassis installs in standard 19-inch racks with optional RPK 005 or RPK 006 mounting kits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNetwork Management\u003c\/strong\u003e — A hosted web page over RJ-45 Ethernet enables remote control, monitoring, and third-party room control integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Receiver Runtime\u003c\/strong\u003e — Up to 50 hours on alkaline or 32 hours on NiMH batteries minimizes mid-event battery swaps.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558-24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ T55C, dual FM and Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Frequencies\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 selectable wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmission Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 coaxial antenna (sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Input\u003c\/th\u003e\n\u003ctd\u003eCombination 3-pin XLR \/ 1\/4\" TRS, mic or line level, selectable phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAudio Processing\u003c\/th\u003e\n\u003ctd\u003eDSP based; compression 1:1, 1.5:1, or 2:1; high-pass\/low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFrequency Response (Transmitter)\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSignal-to-Noise Ratio\u003c\/th\u003e\n\u003ctd\u003e67 dB typical (transmitted RF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver\u003c\/th\u003e\n\u003ctd\u003ePPA R38N body-pack, 1\" OLED, channel lock, 3.5 mm stereo jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs (2x AA alkaline) or 32 hrs (2x AA NiMH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCharger Compatibility\u003c\/th\u003e\n\u003ctd\u003eCHG 3512 and CHG 3502 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNetwork\u003c\/th\u003e\n\u003ctd\u003eRJ-45 Ethernet, 10\/100 Base-T; hosted web page control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mount\u003c\/th\u003e\n\u003ctd\u003eStandard 19\" rack, 1RU, 1\/2 rack wide (RPK 005\/006 kits optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Dimensions\u003c\/th\u003e\n\u003ctd\u003e8.45\" W x 8.25\" D x 1.72\" H (21.5 x 21 x 4.4 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2 years parts and labor (transmitter); Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is the difference between the FM 558-24 and the FM 558-24 PRO?\u003c\/h3\u003e\u003cp\u003eBoth include the FM+ transmitter and 24 R38 receivers. The PRO adds professional installation accessories: remote coaxial antenna, rack panel kit, 12-bay chargers with rechargeable batteries, neckloops, and an ADA wall plaque. This base package suits venues sourcing those items separately.\u003c\/p\u003e\u003ch3\u003eDo I need an antenna to operate the system?\u003c\/h3\u003e\u003cp\u003eYes. The FCC requires this transmitter to be used with approved FCC 15.203 compliant antennas (such as the ANT 005, ANT 021, ANT 024, or ANT 025) and to be professionally installed.\u003c\/p\u003e\u003ch3\u003eDoes the Wi-Fi streaming require special network equipment?\u003c\/h3\u003e\u003cp\u003eThe FM+ connects to your existing Wi-Fi network through its Ethernet port; it does not create its own network. The facility network must be in place before app-based listening can be used.\u003c\/p\u003e\u003ch3\u003eCan listeners with hearing aids use this system?\u003c\/h3\u003e\u003cp\u003eYes. Receivers output through a 3.5 mm stereo jack compatible with neckloops (such as the Williams AV NKL 001) that couple magnetically to telecoil-equipped hearing aids.\u003c\/p\u003e\u003ch3\u003eHow is the transmitter integrated with room control systems?\u003c\/h3\u003e\u003cp\u003eThe FM+ T55C exposes a hosted web page over Ethernet and supports management by third-party room control platforms, allowing AV staff to monitor and adjust the unit remotely.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe transmitter is covered for 2 years parts and labor; the R38N receivers carry a Lifetime PLUS Limited Warranty, with 90 days on most accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739857060076,"sku":"FM 558-24","price":7700.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-24-fm-system-package-24-r38-receivers-creation-networks-63218.png?v=1757912619"},{"product_id":"williams-sound-fm-558-24-pro-fm-pro-system-package-24-r38-receivers","title":"Williams AV FM 558-24 PRO – Large-Venue FM and Wi-Fi Listening Package","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM 558-24 PRO package equips a large venue with everything required for ADA-compliant hearing assistance in one order: a dual FM and Wi-Fi FM+ T55C transmitter, 24 PPA R38N receivers, charging infrastructure, antenna, rack hardware, and compliance signage. It is a standard specification for performing arts centers, civic chambers, and worship spaces where a high receiver count must be deployed, charged, and managed by facility staff. Because the transmitter also streams over the building's Wi-Fi network, audience members can listen on personal smartphones through the WaveCAST app without checking out a receiver.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eWilliams AV designed the FM 558 series around the FM+ T55C, a half-rack transmitter that pushes the same DSP-processed audio to two transports at once: 72 MHz-band FM for the supplied body-pack receivers and a network audio stream for app-based listeners. For the installing contractor, the workflow is straightforward — land a balanced line-level or microphone feed on the rear XLR\/TRS combo jack, mount the unit with the included RPK 005 panel in the head-end rack, run the ANT 005 coaxial antenna to a code-compliant location, and connect Ethernet for web-based management. Selectable phantom power, input gain adjustment in 1 dB steps, and a 10-LED level meter simplify commissioning against the house mix.\u003c\/p\u003e\u003cp\u003eReceiver logistics are where this PRO package earns its keep in a 24-unit deployment. The two included CHG 3512 drop-in chargers each hold 12 receivers, so the entire fleet recharges overnight in two footprints with no cable management. Each R38N receiver shows its channel on a 1-inch OLED display, locks to the house channel to prevent patron mis-tuning, and runs roughly 32 hours per charge on the included NiMH batteries — or 50 hours on disposable alkalines for backup. Six NKL 001 neckloops are included for hearing aid users with telecoils, and 24 EAR 022 surround earphones cover everyone else. The IDP 008 wall plaque notifies guests that assistive listening is available, a posting requirement in most ADA-governed assembly spaces.\u003c\/p\u003e\u003cp\u003eNeed network audio integration? The \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-24-pro-d-fm-pro-system-package-24-r38-receivers-dante\"\u003eDante-equipped FM 558-24 PRO D\u003c\/a\u003e adds a Dante input to this same package. Smaller rooms can scale down to the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-558-12-pro-fm-pro-system-package-12-r38-receivers\"\u003eFM 558-12 PRO with 12 receivers\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Listening Paths, One Transmitter\u003c\/strong\u003e — The FM+ T55C broadcasts FM to hardware receivers and streams Wi-Fi audio to the WaveCAST app simultaneously from a single half-rack unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Capacity Receiver Package\u003c\/strong\u003e — Twenty-four PPA R38N receivers with OLED displays and channel lock support large audiences with managed, checkout-style distribution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvernight Fleet Charging\u003c\/strong\u003e — Two 12-bay CHG 3512 drop-in chargers recharge all 24 receivers at once, with red LED status indicators per bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Compliance Out of the Box\u003c\/strong\u003e — Neckloops for telecoil users, surround earphones, and the IDP 008 availability plaque address assistive listening requirements for assembly occupancies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommissioning-Friendly Transmitter\u003c\/strong\u003e — A 10-LED level meter, 1 dB input gain steps, and DSP presets make it quick to align the system with the house audio feed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot FM Coverage\u003c\/strong\u003e — The included ANT 005 remote coaxial antenna delivers FM range up to 1,000 feet for full-room coverage in large halls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb-Based Management\u003c\/strong\u003e — IT and AV staff can monitor and configure the transmitter from its hosted web page over the facility network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-Ready Hardware\u003c\/strong\u003e — The RPK 005 rack panel kit mounts the half-rack transmitter cleanly in one standard 19-inch rack space.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eAll-hands room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Model\u003c\/th\u003e\n\u003ctd\u003eFM 558-24 PRO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter\u003c\/th\u003e\n\u003ctd\u003eFM+ T55C (dual FM \/ Wi-Fi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFM Band\u003c\/th\u003e\n\u003ctd\u003e72.1–75.9 MHz, 17 wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFM Range\u003c\/th\u003e\n\u003ctd\u003eUp to 1,000 ft (304 m) with ANT 005 antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAnalog Input\u003c\/th\u003e\n\u003ctd\u003eXLR \/ 1\/4\" TRS combo, mic or line, selectable 14.4 VDC phantom power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInput Gain\u003c\/th\u003e\n\u003ctd\u003e0 to -50 dB, adjustable in 1 dB steps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDSP Processing\u003c\/th\u003e\n\u003ctd\u003eCompression 1:1 \/ 1.5:1 \/ 2:1; high-pass and low-pass filter control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTransmitter Frequency Response\u003c\/th\u003e\n\u003ctd\u003e31 Hz–16 kHz, ±3 dB (Music preset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTHD\u003c\/th\u003e\n\u003ctd\u003eLess than 0.25% @ 1 kHz (RF output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Model\u003c\/th\u003e\n\u003ctd\u003ePPA R38N, 1\" OLED, channel lock, belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eReceiver Battery Life\u003c\/th\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline \/ 32 hrs NiMH (2x AA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCharger\u003c\/th\u003e\n\u003ctd\u003e2x CHG 3512, 12-bay drop-in, 16-hour timed charge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003e3.12\" OLED front panel; hosted web page; third-party room control support via Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRack Mounting\u003c\/th\u003e\n\u003ctd\u003e19\" rack, 1RU, 1\/2 width; RPK 005 kit included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIn the Box\u003c\/th\u003e\n\u003ctd\u003e(1) FM T55C, (24) PPA R38N, (24) EAR 022, (6) NKL 001, (2) CHG 3512, (24) BAT 026-2, (1) ANT 005, (1) IDP 008, (1) RPK 005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApprovals\u003c\/th\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS3, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e2-year transmitter; Lifetime PLUS Limited Warranty on receivers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does this package differ from the base FM 558-24?\u003c\/h3\u003e\u003cp\u003eThe PRO version adds the professional installation accessories — ANT 005 remote antenna, RPK 005 rack panel kit, IDP 008 ADA plaque, neckloops, and 12-bay charging with rechargeable batteries — on top of the transmitter and 24 receivers.\u003c\/p\u003e\u003ch3\u003eCan the receivers be locked to one channel?\u003c\/h3\u003e\u003cp\u003eYes. The R38N supports channel lock, so venue staff can fix every receiver to the house frequency and prevent patrons from retuning.\u003c\/p\u003e\u003ch3\u003eWhat does the venue need to provide for Wi-Fi streaming?\u003c\/h3\u003e\u003cp\u003eAn existing Wi-Fi network with capacity for the expected number of app listeners. The transmitter connects to that network over Ethernet; it does not broadcast its own SSID.\u003c\/p\u003e\u003ch3\u003eIs the FM signal compatible with older Williams Sound 72 MHz receivers?\u003c\/h3\u003e\u003cp\u003eThe system operates on the standard 72.1–75.9 MHz wideband channels used across Williams AV's 72 MHz FM product line; confirm channel compatibility for your specific legacy receiver model with the FM Systems comparison documentation.\u003c\/p\u003e\u003ch3\u003eWho installs the antenna?\u003c\/h3\u003e\u003cp\u003eFCC rules require professional installation with approved FCC 15.203 compliant antennas. The included ANT 005 is compliant; placement should follow Williams AV's antenna installation guidance.\u003c\/p\u003e\u003ch3\u003eWhat support is available after purchase?\u003c\/h3\u003e\u003cp\u003eCreation Networks supports system selection and ordering, and Williams AV backs the hardware with a 2-year transmitter warranty and a Lifetime PLUS Limited Warranty on the receivers.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739866824940,"sku":"FM 558-24 PRO","price":9637.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-558-24-pro-fm-pro-system-package-24-r38-receivers-creation-networks-59893.png?v=1757912626"},{"product_id":"williams-sound-fm-ada-kit-1","title":"Williams AV FM ADA KIT 1 – Large-Area FM ADA Compliance Kit","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM ADA KIT 1 is an economical FM assistive listening kit for satisfying Americans with Disabilities Act (ADA) requirements in venues such as auditoriums, theaters, conference facilities, and houses of worship. The kit pairs a PPA T27 base transmitter — with a broadcast range of up to 1,000 feet — with two R37 FM receivers, earphones, neckloops, and ADA signage, providing everything needed to launch a compliant hearing assistance program. Operating on the 72–76 MHz band reserved for auditory assistance, it is a straightforward starting point for any facility required to provide equal access for listeners with hearing loss.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe ADA requires public facilities to provide equal access to people with disabilities, including those who need hearing assistance in assembly areas. The FM ADA KIT 1 addresses that requirement without a complex installation. The included PPA T27 transmitter broadcasts a presenter's voice, music program, or audio service wirelessly up to 1,000 feet. A presenter can plug a microphone with a 3.5 mm plug directly into the unit, or the transmitter can take a line-level feed from the house sound system through its RCA jack — the typical configuration in auditoriums and worship spaces where a mixer or DSP already handles program audio.\u003c\/p\u003e\u003cp\u003eTwo PPA R37 body-pack receivers pick up the broadcast on any of 17 preset wideband channels between 72 and 76 MHz. Each receiver includes an EAR 013 single mini earbud and AA alkaline batteries, and two NKL 001 neckloops are provided for listeners with telecoil-equipped hearing aids or cochlear implants, who hear the program directly through their own devices. Receivers run approximately 50 hours per pair of alkaline cells and can be switched to NiMH rechargeable operation with drop-in charger compatibility as the system grows.\u003c\/p\u003e\u003cp\u003eThe kit also includes the IDP 008 ADA wall plaque to notify visitors that assistive listening is available, plus the ANT 021 antenna and TFP 036 power supply for the transmitter. The system is made in the USA and carries the Williams AV Lifetime PLUS Limited Warranty, with 90 days on accessories. Note: the PPA T27 transmitter is FCC-approved for U.S. markets only, ships with a US plug type, and FCC rules limit this equipment to auditory assistance.\u003c\/p\u003e\u003cp\u003eFacilities with larger audiences can add receivers individually or in bulk — see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r38-20-20-pack-fm-r38-receiver-bundle\"\u003ePPA R38-20 twenty-receiver bundle\u003c\/a\u003e — or browse the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV assistive listening collection\u003c\/a\u003e for chargers, microphones, and neckloops.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Broadcast Range\u003c\/strong\u003e — The PPA T27 base transmitter covers large venues such as auditoriums, theaters, and houses of worship from a single location.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEconomical ADA Starting Point\u003c\/strong\u003e — Delivers the transmitter, receivers, listening accessories, and signage needed to begin meeting ADA assistive listening requirements at a modest cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Sound System Connection\u003c\/strong\u003e — A line-level RCA input takes program audio straight from the house mixer, or a 3.5 mm microphone input captures a presenter's voice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo FM Receivers Included\u003c\/strong\u003e — PPA R37 body-pack receivers tune 17 preset wideband channels in the 72–76 MHz hearing assistance band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible\u003c\/strong\u003e — Two NKL 001 neckloops couple inductively to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Receiver Battery Life\u003c\/strong\u003e — Approximately 50 hours of operation per pair of AA alkaline batteries, with a switch for NiMH rechargeable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque communicates assistive listening availability to visitors as expected by ADA guidelines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable System\u003c\/strong\u003e — Any Williams Sound 72–76 MHz receiver, including the R37 and R38, can be added as audience needs grow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA with Lifetime Warranty\u003c\/strong\u003e — Covered by the Williams AV Lifetime PLUS Limited Warranty, with 90 days on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium and theater assistive listening\u003c\/li\u003e\n\u003cli\u003eHouse of worship hearing assistance\u003c\/li\u003e\n\u003cli\u003eConference room and commercial meeting space accessibility\u003c\/li\u003e\n\u003cli\u003eGovernment space public meeting compliance\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room and training room deployments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBroadcast Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72–76 MHz, 17 preset wideband channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm microphone input; line-level RCA jack for sound system connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna (ANT 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 Ω nominal impedance, 9\" length, screw-to-PCB connector; FCC requires professional installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver (PPA R37)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm); 4.6 oz with batteries; seek-button channel selection with channel lock; 3.5 mm stereo\/mono output jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline (BAT 001); approx. 32 hrs on (2) AA NiMH (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Audio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max output @ 16 Ω; 200 Hz–15 kHz ±3 dB; SNR 65 dB min; sensitivity 2 µV @ 12 dB SINAD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 013)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle mini earbud; 3.5 mm mono plug; 32 Ω; 20 Hz–20 kHz; 39\" cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeckloop (NKL 001)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono plug; 8–16 Ω; 500 mW max input; telecoil coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eADA Plaque (IDP 008)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10-3\/8\" x 6-1\/4\" x 1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTFP 036 power supply, US plug type\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC (U.S. markets); receivers also Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T27 transmitter, (2) PPA R37 receivers, (2) BAT 001-2 AA alkaline batteries, (2) EAR 013 mini earbuds, (2) NKL 001 neckloops, (1) IDP 008 ADA wall plaque, (1) ANT 021 antenna, (1) TFP 036 power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does the FM ADA KIT 1 connect to an existing sound system?\u003c\/h3\u003e\u003cp\u003eThe PPA T27 transmitter has a line-level RCA input that connects to an aux or matrix output on the house mixer or DSP, so the assistive listening broadcast mirrors the program feed. A 3.5 mm microphone input is also available for standalone use.\u003c\/p\u003e\u003ch3\u003eIs two receivers enough for ADA compliance?\u003c\/h3\u003e\u003cp\u003eADA Section 219 ties required receiver counts to assembly area seating capacity, so many venues will need more than two. The kit is the economical foundation; additional R37 or R38 receivers can be added at any time since all Williams Sound 72–76 MHz receivers are compatible.\u003c\/p\u003e\u003ch3\u003eCan hearing aid users connect to the system?\u003c\/h3\u003e\u003cp\u003eYes. The two included NKL 001 neckloops plug into the receivers and couple inductively to telecoil-equipped hearing aids and cochlear implants, which the ADA expects for a portion of provided receivers.\u003c\/p\u003e\u003ch3\u003eDoes the transmitter require professional installation?\u003c\/h3\u003e\u003cp\u003eThe FCC requires the ANT 021 antenna to be professionally installed. The rest of the system setup — connecting audio, setting the channel, and distributing receivers — is straightforward for facility staff.\u003c\/p\u003e\u003ch3\u003eCan this kit be used outside the United States?\u003c\/h3\u003e\u003cp\u003eNo. The PPA T27 is FCC-approved for U.S. markets, ships with a US plug, and the 72–76 MHz band is not authorized in all countries. Check local radio regulations before any international deployment.\u003c\/p\u003e\u003ch3\u003eWhat warranty covers the system?\u003c\/h3\u003e\u003cp\u003eWilliams AV provides a Lifetime PLUS Limited Warranty on the transmitter and receivers, with 90 days on accessories such as earphones and batteries.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739870822636,"sku":"FM ADA KIT 1","price":972.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-ada-kit-1-creation-networks-69385.png?v=1757912632"},{"product_id":"williams-sound-fm-ada-kit-37-fm-ada-compliance-kit-alkaline-battery","title":"Williams AV FM ADA KIT 37 – Portable FM ADA Compliance Kit, Alkaline","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM ADA KIT 37 is a portable FM ADA compliance kit that gives facilities everything needed to provide assistive listening for one presenter and up to four listeners in small-group settings such as libraries, conference rooms, and information desks. The complete FM assistive listening system — transmitter, four receivers, microphones, headphones, neckloops, and alkaline batteries — packs into a single carry case, so one kit can satisfy ADA hearing accessibility requirements across a multiple-room facility. The system operates on one of 17 selectable channels in the 72–76 MHz band reserved for hearing assistance.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eFor facilities managers and AV integrators tasked with meeting Americans with Disabilities Act accessibility requirements, the FM ADA KIT 37 is a turnkey answer. The kit pairs a PPA T46 body-pack FM transmitter with four PPA R37N FM receivers, giving a presenter a 150-foot operating range — ample coverage for jury rooms, council chambers, corporate boardrooms, parent-teacher conferences, and small training rooms. Because the entire system is portable and battery-powered, it moves between rooms as needed rather than being fixed to one space.\u003c\/p\u003e\u003cp\u003eTwo microphone options are included: the MIC 090 mini lapel clip microphone for a mobile presenter, and the MIC 149 conference microphone for tabletop pickup in meetings. On the listening side, four HED 027 heavy-duty folding headphones serve general listeners, while two NKL 001 neckloops couple inductively to telecoil-equipped hearing aids and cochlear implants — a key ADA consideration. This alkaline-battery version ships with five BAT 001-2 AA alkaline battery packs and delivers up to 100 hours of receiver battery life; receivers run approximately 50 hours per pair of AA alkaline cells.\u003c\/p\u003e\u003cp\u003eThe included IDP 008 ADA wall plaque signals to visitors that hearing assistance is available, which posting requirements under the 2010 ADA Standards expect of public accommodations. Everything stows in the CCS 029 system carry case for storage, transport, and quick deployment at the front desk. The system is made in the USA and backed by the Williams AV Lifetime PLUS Limited Warranty (90 days on accessories). Note: the kit is FCC-approved for U.S. operation in the 72–76 MHz band, and FCC rules limit use of this equipment to auditory assistance.\u003c\/p\u003e\u003cp\u003eIf your staff prefers not to manage disposable batteries, the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-ada-kit-37-rch-fm-ada-compliance-kit-rechargeable-battery\"\u003eFM ADA KIT 37 RCH rechargeable version\u003c\/a\u003e adds a drop-in charger kit. For larger venues up to 1,000 feet, see the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003efull Williams AV assistive listening lineup\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete ADA Compliance Package\u003c\/strong\u003e — One kit contains the transmitter, receivers, microphones, listening accessories, signage, and case needed to meet ADA assistive listening requirements in small-group spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne Presenter, Four Listeners\u003c\/strong\u003e — The PPA T46 transmitter broadcasts to four PPA R37N receivers across a 150-foot operating range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable FM Channels\u003c\/strong\u003e — Operates on the 72–76 MHz band reserved for hearing assistance, with channel selection to avoid interference between systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible\u003c\/strong\u003e — Two NKL 001 neckloops couple audio directly to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Microphone Options\u003c\/strong\u003e — Includes a MIC 090 lapel microphone for presenters and a MIC 149 conference microphone for tabletop meeting pickup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — Receivers run approximately 50 hours on two AA alkaline batteries, with up to 100 hours of receiver battery life in the kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque notifies visitors that assistive listening devices are available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable Carry Case\u003c\/strong\u003e — The CCS 029 case stores and transports the entire system between rooms, letting one kit cover a multi-room facility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA with Lifetime Warranty\u003c\/strong\u003e — Backed by the Williams AV Lifetime PLUS Limited Warranty, with 90 days of coverage on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room and huddle room hearing assistance\u003c\/li\u003e\n\u003cli\u003eBoardroom accessibility for corporate meetings\u003c\/li\u003e\n\u003cli\u003eGovernment space jury rooms and council chambers\u003c\/li\u003e\n\u003cli\u003eTraining room and commercial meeting space ADA compliance\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room deployments in libraries and schools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 presenter, up to 4 listeners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72–76 MHz, 17 selectable channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 ft (PPA T46 transmitter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver (PPA R37)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm); 4.6 oz with batteries; 17 preset wideband channels via seek button; channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline (BAT 001); approx. 32 hrs on (2) AA NiMH (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Audio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max output @ 16 Ω; 200 Hz–15 kHz ±3 dB; SNR 65 dB min; sensitivity 2 µV @ 12 dB SINAD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphones (HED 027)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty folding mono; 40 mm driver; 16 Ω; 20 Hz–20 kHz; 96 dB @ 1 kHz sensitivity; 3.5 mm plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLapel Mic (MIC 090)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectret condenser, omnidirectional; 20 Hz–18 kHz; 1.5 kΩ; 3.5 mm right-angle plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeckloop (NKL 001)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono plug; 8–16 Ω; 500 mW max input; telecoil coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eADA Plaque (IDP 008)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10-3\/8\" x 6-1\/4\" x 1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC (U.S. markets), Industry Canada; receivers RoHS\/WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T46 transmitter, (4) PPA R37N receivers, (1) MIC 090 lapel mic, (1) MIC 149 conference mic, (4) HED 027 headphones, (2) NKL 001 neckloops, (5) BAT 001-2 AA alkaline batteries, (1) IDP 008 ADA wall plaque, (1) CCS 029 carry case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes the FM ADA KIT 37 satisfy ADA assistive listening requirements?\u003c\/h3\u003e\u003cp\u003eYes. The kit was assembled to meet the 2010 ADA accessibility guidelines for small-group spaces, including receivers, hearing aid-compatible neckloops, and the required wall plaque indicating that assistive listening is available. Confirm receiver counts against your venue's seating capacity under ADA Section 219.\u003c\/p\u003e\u003ch3\u003eHow is this kit different from the FM ADA KIT 37 RCH?\u003c\/h3\u003e\u003cp\u003eThis version uses disposable AA alkaline batteries. The RCH version substitutes rechargeable NiMH batteries and adds a BAT KT6 drop-in charger kit; the transmitter, receivers, and accessories are otherwise the same.\u003c\/p\u003e\u003ch3\u003eWill the receivers work with other Williams Sound transmitters?\u003c\/h3\u003e\u003cp\u003eYes. The PPA R37N receivers tune all 17 wideband channels between 72 and 76 MHz and are compatible with any Williams Sound transmitter in that band, including the PPA T45 and FM+ series.\u003c\/p\u003e\u003ch3\u003eHow do hearing aid users connect to the system?\u003c\/h3\u003e\u003cp\u003eThe two included NKL 001 neckloops plug into the receivers and couple inductively to any hearing aid or cochlear implant with a telecoil, so users hear the program directly through their own devices.\u003c\/p\u003e\u003ch3\u003eDoes this system require installation?\u003c\/h3\u003e\u003cp\u003eNo. The FM ADA KIT 37 is fully portable and battery-operated, with simple setup and operation. It can be deployed at an information desk or moved between conference rooms without any fixed wiring.\u003c\/p\u003e\u003ch3\u003eCan the kit be used outside the United States?\u003c\/h3\u003e\u003cp\u003eThe kit is FCC-approved for U.S. operation. The 72–76 MHz band is not authorized in all countries, so check local radio regulations before deploying internationally.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739889336556,"sku":"FM ADA KIT 37","price":1918.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-ada-kit-37-fm-ada-compliance-kit-alkaline-battery-creation-networks-19416.png?v=1757912638"},{"product_id":"williams-sound-fm-ada-kit-37-rch-fm-ada-compliance-kit-rechargeable-battery","title":"Williams AV FM ADA KIT 37 RCH – Rechargeable FM ADA Compliance Kit","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM ADA KIT 37 RCH is a rechargeable FM ADA compliance kit containing everything a facility needs to provide assistive listening for one presenter and up to four listeners in small-group settings such as libraries, conference rooms, and information desks. Unlike the alkaline version, this kit ships with NiMH rechargeable batteries and a drop-in charger kit, eliminating disposable battery replacement from the operating budget. The portable FM assistive listening system operates on 17 selectable channels in the 72–76 MHz hearing assistance band and packs into one carry case, so a single kit can satisfy ADA requirements across a multi-room facility.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eFor IT and facilities managers who would rather charge receivers overnight than stock AA batteries, the FM ADA KIT 37 RCH is the practical choice. The kit combines a PPA T46 body-pack FM transmitter with four PPA R37N FM receivers and a 150-foot operating range — well suited to jury rooms, council chambers, small conference rooms, consultation rooms, parent-teacher conferences, and information desks. Five BAT 026-2 AA NiMH rechargeable battery packs power the system, and the included BAT KT6 drop-in charger kit tops them up between uses; receivers run approximately 32 hours per charge.\u003c\/p\u003e\u003cp\u003ePresenters can clip on the MIC 090 mini lapel microphone for hands-free speaking or place the MIC 149 conference microphone on the table for meeting pickup. Listeners choose between four HED 027 heavy-duty folding headphones or two NKL 001 neckloops, which couple inductively to telecoil-equipped hearing aids and cochlear implants — an important accommodation under ADA accessibility guidelines. The included IDP 008 ADA wall plaque provides the required signage telling visitors that assistive listening devices are available.\u003c\/p\u003e\u003cp\u003eEverything stores in the CCS 029 system carry case, making the kit easy to deploy from a front desk and move between rooms. Setup is simple: power on the transmitter, match receiver channels, and distribute headsets. The system is made in the USA and covered by the Williams AV Lifetime PLUS Limited Warranty, with 90 days on accessories. Note: the kit is FCC-approved for U.S. operation, and FCC rules limit this equipment to auditory assistance use.\u003c\/p\u003e\u003cp\u003eIf disposable batteries fit your operation better, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-ada-kit-37-fm-ada-compliance-kit-alkaline-battery\"\u003ealkaline FM ADA KIT 37\u003c\/a\u003e. Additional receivers, neckloops, and chargers are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Operation\u003c\/strong\u003e — Five AA NiMH battery packs and the BAT KT6 drop-in charger kit eliminate recurring disposable battery costs and waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete ADA Compliance Package\u003c\/strong\u003e — Transmitter, four receivers, two microphones, headphones, neckloops, ADA signage, and a carry case cover every requirement for small-group assistive listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne Presenter, Four Listeners\u003c\/strong\u003e — The PPA T46 transmitter broadcasts to four PPA R37N receivers over a 150-foot operating range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable FM Channels\u003c\/strong\u003e — Operates in the 72–76 MHz band reserved for hearing assistance, with channel selection to run multiple systems side by side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible\u003c\/strong\u003e — Two NKL 001 neckloops deliver audio inductively to telecoil-equipped hearing aids and cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Microphone Options\u003c\/strong\u003e — MIC 090 lapel microphone for mobile presenters and MIC 149 conference microphone for tabletop meeting coverage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-In Charging\u003c\/strong\u003e — Receivers have base charging contacts compatible with Williams Sound drop-in chargers for simple overnight charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque satisfies posting expectations that assistive listening availability be communicated to visitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable Carry Case\u003c\/strong\u003e — The CCS 029 case keeps the full system organized for storage, checkout, and movement between rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA with Lifetime Warranty\u003c\/strong\u003e — Covered by the Williams AV Lifetime PLUS Limited Warranty, with 90 days on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConference room and huddle room hearing assistance\u003c\/li\u003e\n\u003cli\u003eBoardroom and commercial meeting space accessibility\u003c\/li\u003e\n\u003cli\u003eGovernment space jury rooms and council chambers\u003c\/li\u003e\n\u003cli\u003eTraining room ADA compliance programs\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room deployments in libraries and schools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 presenter, up to 4 listeners\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72–76 MHz, 17 selectable channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 ft (PPA T46 transmitter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver (PPA R37)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm); 4.6 oz with batteries; 17 preset wideband channels via seek button; channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs on (2) AA NiMH 1500 mAh (BAT 026); approx. 50 hrs on (2) AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharger (CHG 3502)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-bay drop-in; 100 mA per bay; 16 hrs nominal charge time; TFP 041 power supply, 100–240 VAC input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Audio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max output @ 16 Ω; 200 Hz–15 kHz ±3 dB; SNR 65 dB min; sensitivity 2 µV @ 12 dB SINAD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphones (HED 027)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeavy-duty folding mono; 40 mm driver; 16 Ω; 20 Hz–20 kHz; 96 dB @ 1 kHz sensitivity; 3.5 mm plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLapel Mic (MIC 090)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectret condenser, omnidirectional; 20 Hz–18 kHz; 1.5 kΩ; 3.5 mm right-angle plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNeckloop (NKL 001)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono plug; 8–16 Ω; 500 mW max input; telecoil coupling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eADA Plaque (IDP 008)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10-3\/8\" x 6-1\/4\" x 1\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC (U.S. markets), Industry Canada; receivers RoHS\/WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKit Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T46 transmitter, (4) PPA R37N receivers, (1) MIC 149 conference mic, (1) MIC 090 lapel mic, (4) HED 027 headphones, (1) BAT KT6 drop-in charger kit, (5) BAT 026-2 AA rechargeable batteries, (2) NKL 001 neckloops, (1) IDP 008 ADA wall plaque, (1) CCS 029 carry case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Manufacture\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in USA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhat is different about the RCH version of the FM ADA KIT 37?\u003c\/h3\u003e\u003cp\u003eThe RCH version replaces disposable alkaline batteries with AA NiMH rechargeable batteries and adds the BAT KT6 drop-in charger kit. The transmitter, receivers, microphones, and accessories are otherwise identical to the standard kit.\u003c\/p\u003e\u003ch3\u003eHow long do the rechargeable batteries last per charge?\u003c\/h3\u003e\u003cp\u003eThe PPA R37N receivers run approximately 32 hours on two AA NiMH 1500 mAh batteries. A receiver battery-type switch also allows operation on standard alkaline cells, which extend runtime to about 50 hours if needed.\u003c\/p\u003e\u003ch3\u003eHow are the receivers recharged?\u003c\/h3\u003e\u003cp\u003eEach receiver has charging contacts on its base for the included drop-in charger. Place receivers in the charger bays after use; a full charge takes about 16 hours, making overnight charging the typical routine.\u003c\/p\u003e\u003ch3\u003eDoes this kit meet ADA assistive listening requirements?\u003c\/h3\u003e\u003cp\u003eYes. It was assembled to meet the 2010 ADA accessibility guidelines for small-group settings and includes telecoil-compatible neckloops and the required assistive listening availability plaque. Verify receiver quantities against your venue capacity under ADA Section 219.\u003c\/p\u003e\u003ch3\u003eAre the receivers compatible with other Williams Sound transmitters?\u003c\/h3\u003e\u003cp\u003eYes. The PPA R37N tunes all 17 wideband channels in the 72–76 MHz band and works with any Williams Sound transmitter in that range, so the kit can grow into a larger installed system later.\u003c\/p\u003e\u003ch3\u003eWhat warranty and support are provided?\u003c\/h3\u003e\u003cp\u003eWilliams AV backs the system with its Lifetime PLUS Limited Warranty (90 days on accessories), and Creation Networks can assist with receiver expansion, replacement accessories, and ADA compliance planning.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739900281068,"sku":"FM ADA KIT 37 RCH","price":2047.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-ada-kit-37-rch-fm-ada-compliance-kit-rechargeable-battery-creation-networks-27174.png?v=1757912644"},{"product_id":"williams-sound-fm-r37-fm-receiver-with-ear-022","title":"Williams AV FM R37 – FM Assistive Listening Receiver with EAR 022","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM R37 is a body-pack FM assistive listening receiver supplied with an EAR 022 surround earphone and AA alkaline batteries, ready to hand to a listener the moment it leaves the box. Seek-button channel selection gives access to all 17 preset wideband frequencies in the 72–76 MHz band reserved for hearing assistance under the ADA, and the receiver is compatible with every Williams Sound 72–76 MHz wideband transmitter. It is the standard fleet receiver for auditoriums, houses of worship, and conference facilities expanding an existing FM assistive listening system.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe R37's audio is digitally synthesized for clear, stable reception across all 17 channels. Channel selection is made with a seek button inside the battery compartment, and a channel-lock capability prevents listeners from accidentally changing channels mid-event — a practical detail for venues that loan receivers to the public. A combination volume control and power on\/off dial keeps operation simple, while a green LED indicates power, battery, and system status, flashing on low battery.\u003c\/p\u003e\u003cp\u003eThe 3.5 mm stereo\/mono output jack accepts a wide range of earphones, headphones, and neckloops, making the receiver compatible with telecoil-equipped hearing aids when paired with a neckloop such as the NKL 001. The included EAR 022 surround earphone delivers 118 dB sensitivity at 1 kHz with a 23 mm driver. Housed in impact-resistant PC\/ABS plastic with a hinged battery door and detachable belt clip, the receiver is built for fleet duty.\u003c\/p\u003e\u003cp\u003ePower flexibility is built in: a slide switch in the battery compartment selects disposable alkaline or NiMH rechargeable operation, and charging contacts on the base work with Williams Sound CHG 3502 and CHG 3512 drop-in chargers. Expect approximately 50 hours per pair of AA alkaline cells or 32 hours on NiMH rechargeables. A battery-saving sleep mode extends runtime further. Note: the receiver requires a transmitter operating on 72–76 MHz and is FCC-approved for U.S. markets.\u003c\/p\u003e\u003cp\u003ePair the R37 with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-t55c-00-fm-c-assistive-listening-system\"\u003eFM T55C FM+ transmitter\u003c\/a\u003e or any 72–76 MHz Williams Sound system, and browse the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e for chargers, neckloops, and replacement earphones.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels\u003c\/strong\u003e — Seek-button selection covers every preset frequency in the 72–76 MHz band reserved for ADA hearing assistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72–76 MHz wideband transmitters, including legacy PPA and current FM+ systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigitally Synthesized Tuning\u003c\/strong\u003e — Delivers stable, drift-free reception with 65 dB minimum signal-to-noise ratio for clear speech.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Lock\u003c\/strong\u003e — Prevents loaned receivers from being knocked off the house channel during an event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Battery Operation\u003c\/strong\u003e — A slide switch selects alkaline (approx. 50 hours) or NiMH rechargeable (approx. 32 hours) power, with base contacts for drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports earphones, headphones, and telecoil neckloops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEAR 022 Earphone Included\u003c\/strong\u003e — Around-ear speaker with 23 mm driver and 118 dB sensitivity ships in the box along with AA alkaline batteries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFleet-Ready Construction\u003c\/strong\u003e — Impact-resistant PC\/ABS housing, hinged battery door, detachable belt clip, and low-battery indicator stand up to daily public loan use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Receiver electronics are covered for life, excluding earphones, headphones, and batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 preset wideband, via seek button in battery compartment; channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–72.9, 74.7, 75.3–75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD (squelch defeated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz, ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Deviation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz \/ 75 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAFC Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±120 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max @ 16 Ω; 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) AA alkaline or (2) AA NiMH, selectable via slide switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline (BAT 001); approx. 32 hrs NiMH 1500 mAh (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase contacts for CHG 3502 \/ CHG 3512 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen for power; flashing green for low battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0–50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 022)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAround-ear speaker; 23 mm driver; 32 Ω; 20 Hz–20 kHz; 118 dB @ 1 kHz; 3.5 mm mono plug; 39\" cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada; RoHS, WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R37N receiver, (1) EAR 022 surround earphone, (1) BAT 001-2 AA alkaline battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (excludes earphones, headphones, batteries)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739912798444,"sku":"FM R37","price":164.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-r37-fm-receiver-with-ear-022-creation-networks-70077.png?v=1757912656"},{"product_id":"williams-sound-fm-r38-receiver-kit","title":"Williams AV FM R38 – Multi-Channel FM Receiver Kit with OLED Display","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV FM R38 is a multi-channel FM assistive listening receiver with a high-resolution OLED screen, supplied as a complete kit with an EAR 022 surround earphone and AA alkaline batteries. On-screen channel selection gives quick access to all 17 preset wideband frequencies in the 72–76 MHz hearing assistance band, and the receiver works with every Williams Sound 72–76 MHz wideband transmitter. For venues upgrading an FM assistive listening fleet, the R38 adds a modern menu-driven interface to the proven body-pack format.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe standout feature of the R38 is its 1-inch high-resolution OLED display, which gives staff and listeners a quick view of receiver status — channel or frequency, digital volume level, and a 4-step battery indicator — plus immediate entry to all user settings through the on-screen menu. A step\/seek function lets users increment channels manually or seek directly to the next active channel, and channel-lock capability keeps loaned receivers on the house frequency during events.\u003c\/p\u003e\u003cp\u003eAudio is digitally synthesized for clear, stable reception, with digital tuning, digital squelch, and a battery-saving sleep mode with auto-off. Soft audio turn-on avoids startling listeners when the unit powers up. The R38 adds a stereo headphone jack alongside mono compatibility, broadening support for earphones, headphones, and neckloops — including telecoil neckloops for hearing aid users. The included EAR 022 around-ear earphone delivers 118 dB sensitivity from a 23 mm driver.\u003c\/p\u003e\u003cp\u003eLike the rest of the Williams Sound body-pack line, the R38 is housed in impact-resistant PC\/ABS plastic — here with an aluminum faceplate — with a hinged battery door, detachable belt clip, and a slide switch to select alkaline or NiMH rechargeable battery operation. Base charging contacts work with CHG 3502 and CHG 3512 drop-in chargers. Runtime is approximately 50 hours on AA alkaline cells or 32 hours on NiMH rechargeables. The receiver requires a 72–76 MHz transmitter and is FCC-approved for U.S. markets.\u003c\/p\u003e\u003cp\u003eOutfitting a larger venue? The \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r38-20-20-pack-fm-r38-receiver-bundle\"\u003ePPA R38-20 twenty-receiver bundle\u003c\/a\u003e covers fleet deployments, and the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e stocks compatible transmitters, chargers, and neckloops.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution OLED Display\u003c\/strong\u003e — A 1-inch screen shows channel or frequency, volume, and battery level at a glance, with menu access to every user setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels On-Screen\u003c\/strong\u003e — Menu-driven selection covers all preset frequencies in the 72–76 MHz ADA hearing assistance band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72–76 MHz wideband transmitters, from legacy PPA models to current FM+ systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep\/Seek Tuning\u003c\/strong\u003e — Users can change channels manually or seek straight to the next active broadcast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Tuning and Squelch\u003c\/strong\u003e — Digitally synthesized reception holds a stable, clear signal with 65 dB minimum signal-to-noise ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereo and Mono Output\u003c\/strong\u003e — The 3.5 mm stereo jack supports a wide range of earphones, headphones, and telecoil neckloops for hearing aid users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Battery Operation\u003c\/strong\u003e — A slide switch selects alkaline (approx. 50 hours) or NiMH rechargeable (approx. 32 hours) power, with base contacts for drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — Auto-off and a 4-step battery indicator stretch runtime and flag receivers that need charging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit\u003c\/strong\u003e — Ships with an EAR 022 surround earphone and AA alkaline batteries, ready to deploy on arrival.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Receiver electronics are covered for life, with 90 days on most accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack PC\/ABS impact-resistant plastic with aluminum faceplate; hinged battery door; detachable belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\" high-resolution OLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 wideband, accessed via on-screen menu; channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–72.9, 74.7, 75.3–75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD (squelch defeated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz, ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Deviation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz \/ 75 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max @ 16 Ω; 3.5 mm stereo jack (stereo or mono devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) AA alkaline or (2) AA NiMH, selectable via slide switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline (BAT 001-2); approx. 32 hrs NiMH 1500 mAh (BAT 026-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mA nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase contacts for CHG 3502 \/ CHG 3512 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32–122°F (0–50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 022)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAround-ear speaker; 23 mm driver; 32 Ω; 20 Hz–20 kHz; 118 dB @ 1 kHz; 3.5 mm mono plug; 39\" cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada; RoHS, WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R38N receiver, (1) EAR 022 surround earphone, (1) BAT 001-2 AA alkaline battery pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on most accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739923349740,"sku":"FM R38","price":218.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-fm-r38-receiver-kit-creation-networks-94175.png?v=1757912670"},{"product_id":"williams-sound-pfm-pro-personal-fm-listening-system","title":"Williams AV PFM PRO – Personal FM Listening System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PFM PRO is a complete personal FM listening system that delivers a talker's voice directly to the listener's ear, cutting through background noise and distance at work, school, or home. The kit pairs a PPA T46 bodypack transmitter with a PPA R37 receiver, lavalier microphone, earphone, headphone, audio cable, batteries, and a carrying case — a one-to-one or small-group hearing assistance solution that runs on standard AA alkaline batteries.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe T46 transmitter broadcasts on 17 selectable channels across the 72-76 MHz hearing assistance band with an operating range of up to 150 feet. The talker wears the included MIC 090 lavalier microphone, while the OLED interface provides menu access to channel selection, mic and aux gain, selectable 2:1 compression, and mic mute — features that keep speech intelligible in classrooms, training rooms, and meetings. A 2.5 mm auxiliary input with the included WCA 087 cable lets the transmitter broadcast any line-level audio source alongside the voice signal.\u003c\/p\u003e\u003cp\u003eThe listener wears the R37 receiver and chooses between the included EAR 041 single in-ear earphone and HED 021 folding headphone; the receiver's 3.5 mm jack is also neckloop compatible for telecoil-equipped hearing aids (neckloop not included). The receiver runs up to 50 hours and the transmitter up to 30 hours on AA alkaline batteries, and both units can later move to NiMH rechargeables with Williams Sound drop-in chargers. Everything stows in the included CCS 043 carry case for transport between rooms or sites.\u003c\/p\u003e\u003cp\u003eFor a kit with rechargeable batteries and a drop-in charger included, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-pfm-pro-rch-rechargeable-personal-fm-system\"\u003ePFM PRO RCH rechargeable system\u003c\/a\u003e. Additional receivers, neckloops, and microphones are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete One-to-One FM Kit\u003c\/strong\u003e — Transmitter, receiver, lavalier mic, earphone, headphone, aux cable, batteries, and carry case ship together, ready for immediate use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — The T46 transmits on 17 digitally synthesized channels in the 72-76 MHz band, allowing multiple systems to operate in adjacent rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150-Foot Operating Range\u003c\/strong\u003e — Coverage up to 150 feet (46 m) suits classrooms, meeting rooms, tours, and training environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary Audio Input\u003c\/strong\u003e — The 2.5 mm aux input broadcasts any line-level audio source, such as a media player, alongside the microphone signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression and Mute Control\u003c\/strong\u003e — Selectable 2:1 compression evens out talker levels, and one-touch mic mute supports private sidebar conversations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Listening Options Included\u003c\/strong\u003e — The kit supplies both an EAR 041 in-ear earphone and a HED 021 folding headphone so listeners choose their comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Compatible\u003c\/strong\u003e — The R37 receiver's 3.5 mm jack drives an optional neckloop for telecoil-equipped hearing aids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup Expandable\u003c\/strong\u003e — Additional R37 receivers tune to the same channel, scaling the system from one listener to a group.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eHuddle room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T46 transmitter, (1) PPA R37 receiver, (1) EAR 041 earphone, (1) HED 021 headphone, (1) WCA 087 audio input cable, (1) MIC 090 lavalier microphone, (2) BAT 001-2 AA alkaline batteries, (1) CCS 043 carry case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72-76 MHz, 17 selectable channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 150 ft (46 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 30 hrs on (2) AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono jack, neckloop\/telecoil compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 041)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle in-ear isolation earphone, 3.5 mm mono, 16 ohms, 10 mm driver, 104 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphone (HED 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMono folding headphone, 3.5 mm, 32 ohms, 30 mm driver, 110 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC approved for U.S. markets; FCC rules limit use to auditory assistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWho is the PFM PRO designed for?\u003c\/h3\u003e\u003cp\u003eIt serves anyone who needs a direct audio path from talker to listener — students with hearing difficulty in classrooms, employees in training sessions, meeting participants, and one-on-one situations where distance or background noise degrades intelligibility.\u003c\/p\u003e\u003ch3\u003eCan more than one listener use the system?\u003c\/h3\u003e\u003cp\u003eYes. Any number of additional Williams Sound 72-76 MHz receivers, such as the PPA R37, can tune to the transmitter's channel to serve a group.\u003c\/p\u003e\u003ch3\u003eDoes it work with hearing aids?\u003c\/h3\u003e\u003cp\u003eThe R37 receiver drives an optional neckloop through its 3.5 mm jack, coupling inductively to telecoil-equipped hearing aids and cochlear implant processors. Neckloops are sold separately.\u003c\/p\u003e\u003ch3\u003eWhat is the difference between the PFM PRO and the PFM PRO RCH?\u003c\/h3\u003e\u003cp\u003eThe PFM PRO runs on AA alkaline batteries; the PFM PRO RCH adds NiMH rechargeable batteries and a CHG 3502 dual drop-in charger for a rechargeable workflow.\u003c\/p\u003e\u003ch3\u003eCan I broadcast audio from a media source?\u003c\/h3\u003e\u003cp\u003eYes. The T46's 2.5 mm auxiliary input, used with the included WCA 087 cable, broadcasts any line-level source with independently adjustable gain.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe transmitter and receiver carry the Williams AV Lifetime PLUS Limited Warranty, with 90 days on most accessories. Creation Networks supports the full Williams AV assistive listening line.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739925348588,"sku":"PFM PRO","price":936.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-pfm-pro-personal-fm-listening-system-creation-networks-39840.png?v=1757912673"},{"product_id":"williams-sound-pfm-pro-rch-rechargeable-personal-fm-system","title":"Williams AV PFM PRO RCH – Rechargeable Personal FM Listening System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PFM PRO RCH is a rechargeable personal FM listening system that delivers a talker's voice directly to the listener's ear wherever background noise or distance makes listening difficult — at work, school, or home. The kit pairs a PPA T46 bodypack transmitter with a PPA R37 receiver, lavalier microphone, earphone, headphone, NiMH rechargeable batteries, a CHG 3502 dual drop-in charger, and a carrying case, eliminating disposable battery costs for daily-use hearing assistance.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe T46 transmitter broadcasts on 17 selectable channels across the 72-76 MHz hearing assistance band with an operating range of up to 150 feet. The talker wears the included MIC 090 lavalier microphone while the transmitter's OLED interface manages channel selection, mic and aux gain, selectable 2:1 compression, and one-touch mic mute. A 2.5 mm auxiliary input with the included WCA 087 cable broadcasts any line-level audio source alongside the voice signal — useful for media playback in classrooms and training rooms.\u003c\/p\u003e\u003cp\u003eThe listener wears the R37 receiver with a choice of the included EAR 041 in-ear earphone or HED 021 folding headphone, and the receiver's 3.5 mm jack also drives an optional neckloop for telecoil-equipped hearing aids. The rechargeable workflow is the differentiator: both units drop into the CHG 3502 dual charger with their BAT 026-2 NiMH batteries installed, recharging overnight for daily service. The receiver runs up to 32 hours and the transmitter up to 20 hours per charge, with a battery-type switch to fall back to alkaline cells when needed. The CCS 043 case carries the complete system between sites.\u003c\/p\u003e\u003cp\u003eIf a disposable-battery kit suits your deployment better, see the standard \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-pfm-pro-personal-fm-listening-system\"\u003ePFM PRO personal FM listening system\u003c\/a\u003e. Additional receivers and neckloops are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully Rechargeable Kit\u003c\/strong\u003e — NiMH batteries and a CHG 3502 dual drop-in charger eliminate ongoing disposable battery costs for daily-use systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete One-to-One FM Package\u003c\/strong\u003e — Transmitter, receiver, lavalier mic, earphone, headphone, aux cable, and carry case ship together, ready for service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — The T46 transmits on 17 digitally synthesized channels in the 72-76 MHz band so multiple systems can coexist in adjacent rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150-Foot Operating Range\u003c\/strong\u003e — Coverage up to 150 feet suits classrooms, meeting rooms, tours, and training environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrop-In Overnight Charging\u003c\/strong\u003e — Transmitter and receiver recharge in the dual-bay charger in approximately 14-16 hours with batteries installed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression and Mute Control\u003c\/strong\u003e — Selectable 2:1 compression evens out talker levels, and one-touch mic mute supports private conversations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo Listening Options Included\u003c\/strong\u003e — Both an EAR 041 in-ear earphone and HED 021 folding headphone are supplied so listeners choose their comfort.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Compatible\u003c\/strong\u003e — The R37 receiver drives an optional neckloop for telecoil-equipped hearing aids through its 3.5 mm jack.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eHuddle room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T46 transmitter, (1) PPA R37 receiver, (1) EAR 041 earphone, (1) HED 021 headphone, (1) WCA 087 audio input cable, (1) MIC 090 lavalier microphone, (2) BAT 026-2 AA NiMH rechargeable batteries, (1) CHG 3502 dual drop-in charger, (1) CCS 043 carry case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72-76 MHz, 17 selectable channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 150 ft (46 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery (BAT 026-2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNiMH, 1.2 V, 1500 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 20 hrs per charge on NiMH; recharges in 14-16 hrs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 32 hrs per charge on NiMH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono jack, neckloop\/telecoil compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 041)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle in-ear isolation earphone, 3.5 mm mono, 16 ohms, 10 mm driver, 104 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphone (HED 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMono folding headphone, 3.5 mm, 32 ohms, 30 mm driver, 110 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC approved for U.S. markets; FCC rules limit use to auditory assistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow does charging work?\u003c\/h3\u003e\u003cp\u003eBoth the T46 transmitter and R37 receiver have bottom charging contacts and drop into the included CHG 3502 dual charger with their NiMH batteries installed. A full charge takes approximately 14-16 hours — an overnight cycle for daily service.\u003c\/p\u003e\u003ch3\u003eHow long do the units run per charge?\u003c\/h3\u003e\u003cp\u003eThe receiver runs approximately 32 hours and the transmitter up to 20 hours per charge with the included BAT 026-2 NiMH batteries. Both units can also run on AA alkaline batteries via an internal battery-type switch as a backup.\u003c\/p\u003e\u003ch3\u003eCan additional listeners join the system?\u003c\/h3\u003e\u003cp\u003eYes. Any Williams Sound 72-76 MHz wideband receiver, such as additional PPA R37 units, can tune to the transmitter's channel to serve a group.\u003c\/p\u003e\u003ch3\u003eDoes it support hearing aid users?\u003c\/h3\u003e\u003cp\u003eThe R37 receiver drives an optional neckloop through its 3.5 mm jack, coupling inductively to telecoil-equipped hearing aids and cochlear implant processors. Neckloops are sold separately.\u003c\/p\u003e\u003ch3\u003eHow is this different from the standard PFM PRO?\u003c\/h3\u003e\u003cp\u003eThe PFM PRO RCH adds NiMH rechargeable batteries and the CHG 3502 dual drop-in charger; the standard PFM PRO ships with alkaline batteries and no charger. The transmitter, receiver, and listening accessories are otherwise the same.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe transmitter and receiver carry the Williams AV Lifetime PLUS Limited Warranty, with 90 days on most accessories. Creation Networks supports the full Williams AV assistive listening line for commercial buyers.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739928101100,"sku":"PFM PRO RCH","price":1008.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-pfm-pro-rch-rechargeable-personal-fm-system-creation-networks-52588.png?v=1757912677"},{"product_id":"williams-sound-ppa-r37-r37-fm-receiver-with-ear-013","title":"Williams AV PPA R37 – FM Assistive Listening Receiver with Earphone","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37 is a 17-channel FM assistive listening receiver supplied with batteries and an EAR 013 single earphone, ready to hand to a listener the moment it arrives. Operating on the 72-76 MHz wideband frequencies reserved for hearing assistance under the ADA, it works with all Williams Sound wideband FM transmitters, making it the standard replacement and expansion receiver for FM assistive listening systems in commercial venues, classrooms, and houses of worship.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe R37 uses digitally synthesized tuning for stable, clear audio across all 17 preset wideband channels, selected via a seek button inside the battery compartment. Channel-lock capability keeps the receiver on the house frequency so audience members cannot accidentally retune it. A combination volume control with power on\/off dial and a green LED status indicator keep day-to-day operation simple for venue staff and listeners alike.\u003c\/p\u003e\u003cp\u003eThe 3.5 mm stereo\/mono output jack accepts the included earbud as well as headphones and neckloops, so telecoil-equipped hearing aid users can couple directly to the broadcast — a key requirement for ADA-compliant assistive listening provision. A battery-saving sleep mode engages after approximately six minutes without an RF signal, and the receiver runs up to 50 hours on two AA alkaline batteries or up to 32 hours on NiMH rechargeables using an internal battery-type switch and bottom contacts for Williams Sound drop-in chargers.\u003c\/p\u003e\u003cp\u003eBuilding out a full system? Pair the R37 with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-t46-transmitter\"\u003ePPA T46 bodypack transmitter\u003c\/a\u003e or browse multi-receiver bundles and transmitters in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Seek-Button Tuning\u003c\/strong\u003e — Access all 17 preset wideband frequencies in the 72-76 MHz hearing assistance band via the seek button in the battery compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — The receiver works with every Williams Sound 72-76 MHz wideband FM transmitter, simplifying fleet expansion and replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Lock the receiver to the venue channel to prevent accidental retuning by listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports earphones, headphones, and neckloops for telecoil-equipped hearing aids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — Up to 50 hours of operation on two AA alkaline batteries, with a low-battery indicator for easy pre-event checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Ready\u003c\/strong\u003e — A battery-type slide switch and bottom charging contacts support NiMH batteries with CHG 3502 or CHG 3512 drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — The receiver enters sleep mode after about six minutes without an RF signal to extend battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Impact-resistant PC\/ABS bodypack construction is backed by the Williams AV Lifetime PLUS Limited Warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R37N receiver, (1) BAT 001-2 AA alkaline batteries, (1) EAR 013 single earphone, belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17, seek-button selection in battery compartment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1-75.9 MHz (17 preset wideband channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline; approx. 32 hrs on (2) AA NiMH (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mA nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD, squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz - 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB min @ 100 µV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Deviation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz \/ 75 µS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max peak into 16 ohms, 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegral with earphone\/headphone cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 013)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle earbud, 3.5 mm mono, 32 ohms, 20 Hz - 20 kHz, 13 mm driver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes with no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739931967724,"sku":"PPA R37","price":164.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-r37-fm-receiver-with-ear-013-creation-networks-70401.png?v=1757912682"},{"product_id":"williams-sound-ppa-r37-hd-r37-fm-receiver-with-hed-021","title":"Williams AV PPA R37 HD – FM Assistive Listening Receiver with Headphone","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37 HD packages the proven R37 FM assistive listening receiver with a HED 021 folding mono headphone and AA batteries, ready for immediate deployment. Operating across 17 preset wideband channels in the 72-76 MHz band reserved for hearing assistance by the ADA, the receiver pairs with any Williams Sound wideband FM transmitter, making it a straightforward choice for venues, training rooms, and classrooms that prefer over-ear headphones to earbuds.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe R37's digitally synthesized tuning delivers stable, clear audio, and a seek button inside the battery compartment steps through all 17 preset frequencies. Channel-lock capability keeps the receiver on the house frequency so guests cannot accidentally retune it, while a combination volume\/power dial and green LED status indicator keep operation intuitive for any listener.\u003c\/p\u003e\u003cp\u003eThe included HED 021 folding headphone provides a 30 mm driver in a comfortable on-ear format that is easy to sanitize and reissue between events — a practical advantage for venue receiver fleets. The 3.5 mm stereo\/mono jack also accepts earbuds and neckloops, so telecoil-equipped hearing aid users can couple directly to the broadcast in support of ADA assistive listening compliance. The receiver runs up to 50 hours on two AA alkaline batteries, enters a battery-saving sleep mode after about six minutes without an RF signal, and is rechargeable-ready via an internal battery switch and contacts for Williams Sound drop-in chargers.\u003c\/p\u003e\u003cp\u003eNeed a transmitter or additional receivers? Pair the R37 HD with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-t27-personal-pa%C2%AE-compact-fm-transmitter\"\u003ePPA T27 compact FM transmitter\u003c\/a\u003e or browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFolding Headphone Included\u003c\/strong\u003e — The HED 021 mono headphone with 30 mm driver offers comfortable over-ear listening that is easy to clean and reissue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Seek-Button Tuning\u003c\/strong\u003e — Access all 17 preset wideband frequencies in the 72-76 MHz hearing assistance band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72-76 MHz wideband FM transmitters for simple system expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Lock the receiver to the venue channel to prevent accidental retuning by listeners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports neckloops for telecoil-equipped hearing aids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 50 Hours Battery Life\u003c\/strong\u003e — Two AA alkaline batteries deliver approximately 50 hours of operation, with a low-battery indicator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — The receiver sleeps after about six minutes with no RF signal, extending battery life between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Ready\u003c\/strong\u003e — Bottom charging contacts and a battery-type switch support NiMH operation with CHG 3502 or CHG 3512 drop-in chargers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R37N receiver, (1) BAT 001-2 AA alkaline batteries, (1) HED 021 headphone, (1) CLP 023 belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17, seek-button selection in battery compartment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1-75.9 MHz (17 preset wideband channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline; approx. 32 hrs on (2) AA NiMH (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD, squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz - 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB min @ 100 µV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max peak into 16 ohms, 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegral with earphone\/headphone cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeadphone (HED 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMono folding headphone, 3.5 mm plug, 30 mm driver, 32 ohms, 20 Hz - 20 kHz, 110 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes with no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739932721388,"sku":"PPA R37 HD","price":164.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-hd-r37-fm-receiver-with-hed-021-creation-networks-83574.png?v=1757912686"},{"product_id":"williams-sound-ppa-r37-00-r37-fm-receiver","title":"Williams AV PPA R37-00 – FM Assistive Listening Receiver, No Earphones","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37-00 is the body-only configuration of the R37 FM assistive listening receiver, supplied with AA alkaline batteries and a belt clip but no earphones. It is the right SKU for venues that standardize on their own earphone, headphone, or neckloop inventory, or that issue hygienic single-use earbuds. Operating on 17 preset wideband channels in the 72-76 MHz band reserved for hearing assistance by the ADA, it works with all Williams Sound wideband FM transmitters.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eLike every R37, the receiver uses digitally synthesized tuning for stable, clear audio, with seek-button channel selection inside the battery compartment and channel-lock capability that keeps each unit on the house frequency. The combination volume\/power dial and green LED status indicator make the receiver simple for any listener to operate, while a low-battery indicator streamlines pre-event fleet checks.\u003c\/p\u003e\u003cp\u003eBecause the 3.5 mm stereo\/mono jack accepts any low-impedance earphone, headphone, or neckloop, the R37-00 is frequently specified for telecoil-equipped hearing aid users who connect with their own neckloop — a common path to ADA-compliant assistive listening provision without consuming bundled earphones. The receiver runs up to 50 hours on the included AA alkaline batteries, enters a battery-saving sleep mode after roughly six minutes without an RF signal, and is rechargeable-ready with an internal battery-type switch and bottom contacts for Williams Sound CHG 3502 or CHG 3512 drop-in chargers.\u003c\/p\u003e\u003cp\u003eFor complete-system options, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-vp-37-00-personal-fm-value-pack-system-without-earbuds\"\u003ePPA VP 37-00 Personal FM Value Pack\u003c\/a\u003e, or browse compatible transmitters, earphones, and neckloops in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarphone-Free Configuration\u003c\/strong\u003e — Ships without earphones so venues can pair the receiver with their preferred earbuds, headphones, or neckloops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Seek-Button Tuning\u003c\/strong\u003e — Access all 17 preset wideband frequencies in the 72-76 MHz hearing assistance band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72-76 MHz wideband FM transmitters for easy fleet expansion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Lock each receiver to the venue channel to prevent accidental retuning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeckloop and Telecoil Support\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack drives neckloops for telecoil-equipped hearing aids in support of ADA compliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 50 Hours Battery Life\u003c\/strong\u003e — The included AA alkaline batteries power approximately 50 hours of operation, with a low-battery indicator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — The receiver sleeps after about six minutes without an RF signal to conserve batteries between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Ready\u003c\/strong\u003e — A battery-type slide switch and charging contacts support NiMH batteries with Williams Sound drop-in chargers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R37N receiver, (1) BAT 001-2 AA alkaline batteries, (1) CLP 023 belt clip; no earphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17, seek-button selection in battery compartment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1-75.9 MHz (17 preset wideband channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline; approx. 32 hrs on (2) AA NiMH (BAT 026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mA nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD, squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz - 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB min @ 100 µV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max peak into 16 ohms, 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegral with earphone\/headphone cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes with no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739933901036,"sku":"PPA R37-00","price":151.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-00-r37-fm-receiver-creation-networks-70198.png?v=1757912690"},{"product_id":"williams-sound-ppa-r37-12-pro-12-pack-fm-r37-receiver-rechargeable-bundle","title":"Williams AV PPA R37-12 PRO – 12-Pack Rechargeable FM Receiver Bundle","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37-12 PRO is a 12-pack rechargeable FM assistive listening receiver bundle built for venues that must issue receivers to audiences on demand while staying ADA compliant. The package combines twelve R37 FM receivers operating on the 72-76 MHz hearing assistance band with a CHG 3512 PRO twelve-bay drop-in charger, NiMH rechargeable batteries, surround earphones, and a heavy-duty carrying case. It is a turnkey receiver fleet for auditoriums, houses of worship, courtrooms, and conference facilities that already operate a Williams Sound wideband FM transmitter.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eEach R37 receiver in this bundle provides seek-button channel selection across all 17 preset wideband frequencies reserved for hearing assistance, and is compatible with every Williams Sound 72-76 MHz wideband transmitter — including the PPA T45, T46, and T27. Audio is digitally synthesized for clarity and frequency stability, and the 3.5 mm stereo\/mono output jack accepts earphones, headphones, or neckloops for telecoil-equipped hearing aids, which keeps the system aligned with ADA assistive listening requirements.\u003c\/p\u003e\u003cp\u003eFor facilities staff, the operational advantages are in the charging workflow: receivers drop into the CHG 3512 PRO charger with their BAT 026-2 NiMH batteries installed, charge in roughly 16 hours, and deliver up to 32 hours of runtime per charge. A battery-saving sleep mode engages after about six minutes without an RF signal, and channel-lock prevents patrons from accidentally retuning units between events. The included copolymer transport case protects the full fleet for portable deployments across multiple rooms or campuses.\u003c\/p\u003e\u003cp\u003eThis bundle is the rechargeable counterpart to the alkaline-based \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r37-20-20-pack-fm-r37-receiver-bundle\"\u003ePPA R37-20 20-pack receiver bundle\u003c\/a\u003e. Browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV assistive listening collection\u003c\/a\u003e at Creation Networks for compatible transmitters, neckloops, and replacement accessories.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 12-Receiver Fleet\u003c\/strong\u003e — Twelve PPA R37N FM receivers arrive ready for large-venue assistive listening deployment with batteries, earphones, and charging in one package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Bay Drop-In Charging\u003c\/strong\u003e — The CHG 3512 PRO charger recharges all twelve receivers simultaneously in about 16 hours with individual red LED charge indicators per bay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Seek-Button Tuning\u003c\/strong\u003e — Each receiver accesses all 17 preset wideband frequencies in the 72-76 MHz band via a seek button inside the battery compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Staff can lock receivers to the house channel so audience members cannot accidentally retune units mid-event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 32 Hours Rechargeable Runtime\u003c\/strong\u003e — The included BAT 026-2 NiMH batteries deliver approximately 32 hours of operation per charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports earphones, headphones, and neckloops for telecoil-equipped hearing aids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — Receivers automatically enter sleep mode after approximately six minutes without an RF signal to extend battery life between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Transport Case\u003c\/strong\u003e — A copolymer carrying case with limited lifetime warranty keeps the entire receiver fleet organized and protected.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(12) PPA R37N receivers, (12) BAT 026-2 AA NiMH rechargeable batteries, (12) EAR 022 surround earphones, (1) CHG 3512 PRO charger, (1) carrying case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 preset wideband channels, 72-76 MHz, seek-button selection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 32 hours with AA NiMH (BAT 026); up to 50 hours with AA alkaline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono jack, 35 mW max into 16 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery (BAT 026-2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNiMH, 1.2 V, 1500 mAh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharger Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e18\" L x 14\" W x 6.75\" H (45.7 x 35.5 x 17.1 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharger Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.7 lbs (4.85 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharger Power Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTFP 037 switching AC adapter, 90-240 VAC input, 5 VDC \/ 4 A output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 hours nominal; 140 mA charge rate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharger Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 units, individual red LED charging indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 022)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAround-ear speaker, 3.5 mm mono, 32 ohms, 20 Hz - 20 kHz, 118 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCopolymer, 15.7\" W x 19.7\" L x 7.2\" H exterior, approx. 6.6 lbs empty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReceivers: FCC, Industry Canada, RoHS, WEEE; Charger: CE, WEEE, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReceivers: Lifetime PLUS Limited; charger 1 year; case limited lifetime; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich transmitters work with the R37-12 PRO receiver bundle?\u003c\/h3\u003e\u003cp\u003eThe R37 receivers are compatible with all Williams Sound 72-76 MHz wideband FM transmitters, including the PPA T27 tabletop transmitter, PPA T45 rack-mount transmitter, and PPA T46 bodypack transmitter. A transmitter is required and is not included in this bundle.\u003c\/p\u003e\u003ch3\u003eDoes this bundle satisfy ADA assistive listening requirements?\u003c\/h3\u003e\u003cp\u003eThe receivers operate on the 72-76 MHz frequencies reserved for hearing assistance and support neckloops for telecoil-equipped hearing aids through the 3.5 mm jack, which helps venues meet 2010 ADA hearing assistance guidelines. Confirm your venue's required receiver and neckloop counts against current ADA seating tables.\u003c\/p\u003e\u003ch3\u003eHow long does a full recharge take, and how long do receivers run?\u003c\/h3\u003e\u003cp\u003eThe CHG 3512 PRO charges all twelve receivers in approximately 16 hours, and each receiver runs up to 32 hours on a charge with the included NiMH batteries — enough for a full week of typical service schedules between charges.\u003c\/p\u003e\u003ch3\u003eCan the receivers also run on disposable batteries?\u003c\/h3\u003e\u003cp\u003eYes. A slide switch inside each battery compartment selects between NiMH rechargeable and AA alkaline operation, with up to 50 hours of runtime on alkaline cells, which is useful as a backup during long event days.\u003c\/p\u003e\u003ch3\u003eCan this system be used outside the United States?\u003c\/h3\u003e\u003cp\u003eThe receivers are FCC approved for U.S. markets and also carry Industry Canada approval. The 72-76 MHz band is not authorized in all countries, so check local radio regulations before international deployment.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe R37 receivers carry the Williams AV Lifetime PLUS Limited Warranty; the charger is warrantied for 1 year, the case carries a limited lifetime warranty, and most accessories are covered for 90 days. Creation Networks supports the full Williams AV product line for commercial integrators.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739935506668,"sku":"PPA R37-12 PRO","price":2773.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-12-pro-12-pack-fm-r37-receiver-rechargeable-bundle-creation-networks-72511.png?v=1757912691"},{"product_id":"williams-sound-ppa-r37-20-20-pack-fm-r37-receiver-bundle","title":"Williams AV PPA R37-20 – 20-Pack FM Assistive Listening Receiver Bundle","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37-20 is a 20-pack FM assistive listening receiver bundle for large venues that need to scale ADA-compliant hearing assistance quickly. The package includes twenty R37 FM receivers operating on the 72-76 MHz hearing assistance band, twenty sets of AA alkaline batteries, and twenty EAR 022 surround earphones. It is the most direct way for an auditorium, performing arts center, or large house of worship to build out a receiver inventory that pairs with any Williams Sound wideband FM transmitter.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eEach R37 receiver in the bundle features seek-button channel selection with access to all 17 preset wideband frequencies reserved for hearing assistance by the ADA, and is compatible with all Williams Sound 72-76 MHz wideband transmitters such as the PPA T45, T46, and T27. Audio is digitally synthesized for clarity and stability, and the versatile 3.5 mm stereo\/mono jack accepts a range of earphone and headphone options as well as neckloops for telecoil-equipped hearing aid users.\u003c\/p\u003e\u003cp\u003eFor venue operations, the R37 includes channel-lock capability so receivers stay on the house frequency, a battery-saving sleep mode that engages after roughly six minutes without an RF signal, and a low-battery indicator that simplifies pre-event checks. Each receiver runs up to 50 hours on two AA alkaline batteries, and a slide switch in the battery compartment allows a future migration to NiMH rechargeable batteries with Williams Sound CHG 3502 or CHG 3512 drop-in chargers.\u003c\/p\u003e\u003cp\u003eIf your facility prefers a rechargeable workflow out of the box, consider the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r37-12-pro-12-pack-fm-r37-receiver-rechargeable-bundle\"\u003ePPA R37-12 PRO rechargeable 12-pack bundle\u003c\/a\u003e with twelve-bay charger. Compatible transmitters and accessories are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwenty-Receiver Inventory\u003c\/strong\u003e — Twenty PPA R37N FM receivers with batteries and earphones let large venues meet ADA receiver-count requirements in one purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Wideband Tuning\u003c\/strong\u003e — Seek-button access to all 17 preset frequencies in the 72-76 MHz hearing assistance band keeps receivers compatible with any Williams Sound wideband transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Receivers can be locked to the venue channel so patrons cannot accidentally retune during a service or performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 50 Hours Battery Life\u003c\/strong\u003e — Two AA alkaline batteries power each receiver for approximately 50 hours of operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports neckloops for telecoil-equipped hearing aids in addition to the included earphones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — Receivers enter sleep mode after about six minutes with no RF signal, extending battery life between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable-Ready Design\u003c\/strong\u003e — An internal battery-type switch and bottom charging contacts support a later upgrade to NiMH batteries and drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — The receivers are backed by the Williams AV Lifetime PLUS Limited Warranty for long service life in commercial venues.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(20) PPA R37N receivers, (20) BAT 001-2 AA alkaline batteries, (20) EAR 022 surround earphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 preset wideband channels, 72-76 MHz, seek-button selection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hours on (2) AA alkaline; approx. 32 hours on (2) AA NiMH (BAT 026, not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD, squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz - 15 kHz ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max peak into 16 ohms, 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes with no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 022)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAround-ear speaker, 3.5 mm mono, 32 ohms, 20 Hz - 20 kHz, 118 dB @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDo I need a transmitter for this bundle?\u003c\/h3\u003e\u003cp\u003eYes. The R37 receivers require a transmitter operating in the 72-76 MHz band. They pair with any Williams Sound wideband FM transmitter, including the PPA T27, PPA T45, and PPA T46.\u003c\/p\u003e\u003ch3\u003eHow does this bundle help with ADA compliance?\u003c\/h3\u003e\u003cp\u003eThe 2010 ADA guidelines require venues with audio amplification to provide assistive listening receivers based on seating capacity, with a portion of receivers hearing aid compatible. The R37's neckloop-compatible 3.5 mm output supports telecoil coupling, and a 20-receiver inventory covers the receiver counts required for many mid-size to large assembly spaces.\u003c\/p\u003e\u003ch3\u003eCan these receivers be converted to rechargeable operation later?\u003c\/h3\u003e\u003cp\u003eYes. Each receiver has a slide switch to select NiMH operation and bottom charging contacts for Williams Sound CHG 3502 or CHG 3512 drop-in chargers, so you can add BAT 026 NiMH batteries and chargers as your workflow evolves.\u003c\/p\u003e\u003ch3\u003eWill the receivers stay on the correct channel between events?\u003c\/h3\u003e\u003cp\u003eChannel-lock capability lets staff lock each receiver to the house frequency. Channel selection is performed via a seek button inside the battery compartment, out of reach of casual users.\u003c\/p\u003e\u003ch3\u003eWhat warranty and support apply?\u003c\/h3\u003e\u003cp\u003eThe receivers carry the Williams AV Lifetime PLUS Limited Warranty, with 90 days on most accessories. Creation Networks supports commercial AV integrators and facilities teams with the full Williams AV line.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739938947308,"sku":"PPA R37-20","price":3163.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-20-20-pack-fm-r37-receiver-bundle-creation-networks-67493.png?v=1757912697"},{"product_id":"williams-sound-ppa-r37-8n-8-channel-72-mhz-fm-receiver","title":"Williams Sound PPA R37-8N 8-Channel 72 MHz FM Receiver (Discontinued)","description":"\u003cdiv\u003e\n\u003cdiv data-selenium=\"overviewLongDescription\" class=\"productDescription_UbV5SNP5Eo\"\u003e\n\u003cdiv class=\"js-injected-html text_UbV5SNP5Eo\"\u003e\n\u003cp\u003eThe \u003cb\u003eWilliams Sound PPA R37-8 8-Channel 72 MHz FM Receiver\u003c\/b\u003e is a compact and easy-to-use bodypack receiver that allows you to wirelessly listen to a speaker's voice broadcast in the 72 to 76 MHz bandwidth, via a PPA T45, PPA T46, or PPA T27 transmitter. The rotary knob enables you to quickly select one of eight pre-set frequencies, which are digitally synthesized for audio clarity and stable wireless reception. Ideal for use in schools, houses of worship, auditoriums, theaters, and more, the receiver features a 3.5mm headphone jack compatible with mono\/stereo headphones and earphones, as well as induction neckloops and telecoil-equipped hearing aids.\u003c\/p\u003e\n\u003cp\u003eThe PPA R37-8 operates up to 50 hours on two AA alkaline batteries or 32 hours on two rechargeable AA NiMH batteries (batteries available separately). It features a battery-saving sleep mode and a green LED that indicates the battery level and system status. The receiver ships with an earbud-type earphone and a detachable belt clip for hands-free operation.\u003c\/p\u003e\n\u003cdiv class=\"featureHeader_UbV5SNP5Eo\"\u003e\n\u003ch5 class=\"text_TAw0W35QK_ comfy_TAw0W35QK_ sizeTitle2_TAw0W35QK_ weightNormal_TAw0W35QK_ primary_i3MsQsqoe0\"\u003eFeatures\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"js-injected-html text_UbV5SNP5Eo\"\u003e\n\u003cul\u003e\n\u003cli\u003eBodypack style wireless receiver compatible with PPA T45, PPA T46, and PPA T27 transmitters\u003c\/li\u003e\n\u003cli\u003eIdeal for assisted listening applications in schools, houses of worship, auditoriums, theaters, and more\u003c\/li\u003e\n\u003cli\u003eCompact and easy-to-use design\u003c\/li\u003e\n\u003cli\u003eDigitally synthesized signal for audio clarity and stable wireless reception\u003c\/li\u003e\n\u003cli\u003eStereo headphone jack is compatible with mono and stereo headphones and earphones, and supports induction neckloops and telecoil-equipped hearing aids\u003c\/li\u003e\n\u003cli\u003eRotary knob to easily choose between eight pre-set, wide-band frequencies in the 72 to 76 MHz bandwidth\u003c\/li\u003e\n\u003cli\u003eCombination volume control and power on\/off rotary dial\u003c\/li\u003e\n\u003cli\u003eOperates 50 hours on two AA alkaline batteries or 32 hours on two rechargeable AA NiMH batteries (batteries available separately)\u003c\/li\u003e\n\u003cli\u003eBattery-saving sleep mode\u003c\/li\u003e\n\u003cli\u003eLow-battery LED indicator\u003c\/li\u003e\n\u003cli\u003eBlack, PC\/ABS impact-resistant plastic with a hinged battery door\u003c\/li\u003e\n\u003cli\u003eIncludes earbud-type earphone with foam cushion\u003c\/li\u003e\n\u003cli\u003eIncludes detachable belt-clip for hands-free operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv class=\"title_PCPNqBQRJv\"\u003e\n\u003ch2 class=\"text_TAw0W35QK_ comfy_TAw0W35QK_ sizeTitle1_TAw0W35QK_ weightNormal_TAw0W35QK_ primary_i3MsQsqoe0\" data-selenium=\"specsItemTitle\"\u003eWilliams Sound PPA R37-8N Specs\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"group_fDXOr6EpR9\"\u003e\n\u003ctable data-selenium=\"specsItemGroupTable\" class=\"table_fDXOr6EpR9\"\u003e\n\u003ctbody\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9 firstSpecWhenNoGroupName_fDXOr6EpR9\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9 firstSpecWhenNoGroupName_fDXOr6EpR9\"\u003e\u003cspan\u003ePPA T45, PPA T46, and PPA T27 transmitters\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eChannels\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e8, accessed via rotary knob on top of unit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e72.1, 72.3, 72.6, 72.8, 74.7, 75.4, 75.7, 75.9 MHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eFrequency Response\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e200 Hz to 15 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eSignal to Noise Ratio\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e65 dB min at 100 uV\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eInput Overload\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e100 mV\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eSensitivity\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e2 µV at 12 dB Sinad with squelch defeated\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eLED Indicator\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003ePower: Green \u003cbr\u003e Low Battery: Flashes green \u003cbr\u003e Sleep Mode: Fade-on, fade-off\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eDe-Emphasis\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e75 µS\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eModulation\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003eFM, ± 75 kHz peak deviation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eAntenna\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003eIntegrated with earphone cord\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eAudio Output\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e35 mW maximum, peak into 16 Ohms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eOutput Connector\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e1\/8\" \/ 3.5 mm stereo\/mono phone jack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eSleep Mode\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003eEnters sleep mode after approximately 6 minutes of no RF signal \u003cbr\u003e Returns to normal operation when a transmitter is re-established on same channel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eBattery Type\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e2 x AA Alkaline \u003cbr\u003e 2 x AA NiMH\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eBattery Life (approx.)\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e2 x AA alkaline batteries, 50 hours (approximately) \u003cbr\u003e 2 x AA rechargeable NiMH batteries, 1500 mAh, 32 hours (approximately)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e42 mA nominal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eColor\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003eBlack\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eConstruction Material\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003ePC\/ABS impact-resistant plastic\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eTemperature Range\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e32 to 122°F \/ 0 to 50°C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eApprovals\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eDimensions\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e4.09 x 2.83 x 1.38\" \/ 104.00 x 72.00 x 35.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eWeight\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e4.6 oz \/ 130.0 g, with batteries \u003cbr\u003e 2.6 oz \/ 73.0 g, without batteries\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"group_fDXOr6EpR9\"\u003e\n\u003cdiv data-selenium=\"specsItemGroupName\" class=\"name_fDXOr6EpR9\"\u003ePackaging Info\u003c\/div\u003e\n\u003ctable data-selenium=\"specsItemGroupTable\" class=\"table_fDXOr6EpR9\"\u003e\n\u003ctbody\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003ePackage Weight\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e0.2 lb\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr data-selenium=\"specsItemGroupTableRow\" class=\"pair_fDXOr6EpR9\"\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnLabel\" class=\"label_fDXOr6EpR9\"\u003eBox Dimensions (LxWxH)\u003c\/td\u003e\n\u003ctd data-selenium=\"specsItemGroupTableColumnValue\" class=\"value_fDXOr6EpR9\"\u003e\u003cspan\u003e4.8 x 2 x 0.4\"\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739939733740,"sku":"PPA R37-8N","price":179.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37-8n-8-channel-72-mhz-fm-receiver-discontinued-creation-networks-61447.jpg?v=1757912707"},{"product_id":"williams-sound-ppa-r37n-r37-fm-receiver-with-ear-013","title":"Williams AV PPA R37N – 17-Channel FM Assistive Listening Receiver","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R37N is the core 17-channel FM assistive listening receiver of the Personal PA family, the same bodypack receiver supplied in Williams Sound multi-receiver bundles and value pack systems. Operating on the 72-76 MHz wideband frequencies reserved for hearing assistance by the ADA, the R37N is compatible with all Williams Sound wideband FM transmitters, making it the standard receiver for expanding or replacing units in an existing FM assistive listening system.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe R37N's audio is digitally synthesized for clarity and frequency stability. A seek button inside the battery compartment steps through all 17 preset wideband channels, and channel-lock capability keeps each receiver on the house frequency so listeners cannot accidentally retune mid-event. The combination volume control with power on\/off dial and a green LED status indicator make operation intuitive, while a low-battery indicator simplifies fleet checks before services, classes, and performances.\u003c\/p\u003e\u003cp\u003eThe 3.5 mm stereo\/mono output jack accepts a wide range of earphones and headphones, and drives neckloops for telecoil-equipped hearing aids — the connection path most venues rely on for ADA-compliant assistive listening. A battery-saving sleep mode engages after approximately six minutes without an RF signal. The receiver runs up to 50 hours on two AA alkaline batteries or up to 32 hours on NiMH rechargeables, selected via an internal slide switch, with bottom charging contacts for Williams Sound CHG 3502 and CHG 3512 drop-in chargers.\u003c\/p\u003e\u003cp\u003eThe R37N pairs with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-t46-transmitter\"\u003ePPA T46 bodypack transmitter\u003c\/a\u003e for portable one-to-many listening, and is also available in 12- and 20-pack bundles in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Seek-Button Tuning\u003c\/strong\u003e — Access all 17 preset wideband frequencies in the 72-76 MHz hearing assistance band from the seek button in the battery compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with every Williams Sound 72-76 MHz wideband FM transmitter, including the PPA T27, T45, and T46.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel-Lock Capability\u003c\/strong\u003e — Lock the receiver to the venue channel to prevent accidental retuning by audience members.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo\/mono jack supports earphones, headphones, and neckloops for telecoil-equipped hearing aids.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — Up to 50 hours of operation on two AA alkaline batteries, with a low-battery indicator for easy maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — The receiver enters sleep mode after about six minutes without an RF signal to extend battery life between events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable Ready\u003c\/strong\u003e — An internal battery-type switch and bottom charging contacts support NiMH operation with Williams Sound drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Bodypack Construction\u003c\/strong\u003e — Impact-resistant PC\/ABS housing with detachable belt clip is backed by the Williams AV Lifetime PLUS Limited Warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack, PC\/ABS impact-resistant plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17, seek-button selection in battery compartment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) AA alkaline or (2) AA NiMH, selectable via slide switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline; approx. 32 hrs NiMH (BAT 026, 1500 mAh)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mA nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD, squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz - 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB min @ 100 µV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModulation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFM, ±75 kHz peak deviation \/ 75 µS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAFC Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±120 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max peak into 16 ohms, 3.5 mm stereo\/mono jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIntegral with earphone\/headphone cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower: green; low battery: flashing green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAuto Shut-Off\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes with no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739946909932,"sku":"PPA R37N","price":132.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r37n-r37-fm-receiver-with-ear-013-creation-networks-43480.png?v=1757912709"},{"product_id":"williams-sound-ppa-r38-20-20-pack-fm-r38-receiver-bundle","title":"Williams AV PPA R38-20 – 20-Pack FM R38 Receiver Fleet Bundle","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R38-20 is a 20-pack FM receiver bundle that equips a venue with twenty FM R38 multi-channel assistive listening receivers, each with an EAR 022 surround earphone and AA alkaline batteries. It is the efficient way to meet ADA receiver-count requirements in auditoriums, theaters, houses of worship, and government assembly spaces — ADA Section 219 ties the required number of assistive listening receivers to seating capacity, and large venues routinely need twenty or more. Every receiver tunes all 17 preset wideband channels in the 72–76 MHz hearing assistance band and works with any Williams Sound 72–76 MHz transmitter.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eOutfitting a large venue's assistive listening program one receiver at a time is inefficient; the PPA R38-20 bundles a full fleet in one SKU at a per-unit savings. The FM R38 inside is the current-generation Williams Sound body-pack receiver, distinguished by a 1-inch high-resolution OLED display that gives staff a quick view of receiver status — channel or frequency, digital volume, and a 4-step battery level — plus on-screen menu access to all user settings.\u003c\/p\u003e\u003cp\u003eReception is digitally synthesized for clarity and stability, with digital tuning, digital squelch, and a battery-saving sleep mode. A step\/seek function moves between channels manually or seeks the next active broadcast, and channel-lock capability keeps publicly loaned receivers parked on the house frequency — critical when ushers hand out twenty units before a performance. The stereo 3.5 mm jack alongside mono compatibility supports a wide range of earphones, headphones, and telecoil neckloops for hearing aid users.\u003c\/p\u003e\u003cp\u003eEach receiver has a slide switch to select alkaline or NiMH rechargeable battery operation and base charging contacts compatible with Williams Sound CHG 3502 and CHG 3512 drop-in chargers, so the fleet can transition to rechargeable operation as the program matures. Runtime is approximately 50 hours on AA alkaline cells or 32 hours on NiMH rechargeables. Every component in the bundle — receivers, EAR 022 earphones, and BAT 001-2 battery packs — can also be purchased individually for replacement stock. Note: the receivers require a transmitter operating on 72–76 MHz and are FCC-approved for U.S. markets.\u003c\/p\u003e\u003cp\u003ePair the fleet with a \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-t55c-00-fm-c-assistive-listening-system\"\u003eWilliams AV FM T55C FM+ transmitter\u003c\/a\u003e for venue-wide coverage up to 1,000 feet, and find chargers, neckloops, and replacement earphones in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwenty Complete Receiver Packages\u003c\/strong\u003e — Each of the 20 FM R38 receivers ships with an EAR 022 surround earphone and AA alkaline batteries, deployment-ready out of the case.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVenue-Scale ADA Compliance\u003c\/strong\u003e — A single purchase satisfies the receiver counts that ADA Section 219 requires for large assembly areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution OLED Displays\u003c\/strong\u003e — Staff verify channel, volume, and battery status at a glance during pre-event receiver checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels\u003c\/strong\u003e — On-screen selection covers the full 72–76 MHz band reserved for hearing assistance, with seek access to active broadcasts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Lock for Public Loan\u003c\/strong\u003e — Receivers stay on the house frequency no matter how patrons handle them during an event.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72–76 MHz wideband transmitters, protecting existing system investments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHearing Aid Compatible Output\u003c\/strong\u003e — The 3.5 mm stereo jack drives earphones, headphones, and telecoil neckloops for listeners with hearing aids or cochlear implants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable-Ready Fleet\u003c\/strong\u003e — Battery-type switches and drop-in charger contacts on every unit allow migration to NiMH charging without replacing hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Sleep Mode\u003c\/strong\u003e — Auto-off and low-battery indication reduce dead-receiver surprises at showtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Receiver electronics carry lifetime coverage, with 90 days on most accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium and theater assistive listening fleets\u003c\/li\u003e\n\u003cli\u003eHouse of worship hearing assistance programs\u003c\/li\u003e\n\u003cli\u003eGovernment space assembly rooms and council chambers\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space and all-hands room deployments\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room and training room receiver pools\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBundle Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(20) PPA R38N receivers, (20) EAR 022 surround earphones, (20) BAT 001-2 AA alkaline battery packs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack PC\/ABS impact-resistant plastic with aluminum faceplate; hinged battery door; detachable belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\" high-resolution OLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 wideband, on-screen menu selection; channel lock; step\/seek tuning\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–72.9, 74.7, 75.3–75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD (squelch defeated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz, ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Deviation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz \/ 75 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max @ 16 Ω; 3.5 mm stereo jack (stereo or mono devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) AA alkaline or (2) AA NiMH per receiver, selectable via slide switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline (BAT 001-2); approx. 32 hrs NiMH 1500 mAh (BAT 026-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase contacts for CHG 3502 \/ CHG 3512 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarphone (EAR 022)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAround-ear speaker; 23 mm driver; 32 Ω; 20 Hz–20 kHz; 118 dB @ 1 kHz; 3.5 mm mono plug; 39\" cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada; RoHS, WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on most accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eHow many assistive listening receivers does my venue need?\u003c\/h3\u003e\u003cp\u003eADA Section 219 scales required receiver counts with assembly area seating capacity — for example, venues with 501 to 1,000 seats need 20 receivers plus 1 per 33 seats over 500, with a portion hearing aid compatible. The R38-20 bundle covers the base requirement for many mid-size auditoriums in one purchase.\u003c\/p\u003e\u003ch3\u003eWhat transmitter do these receivers require?\u003c\/h3\u003e\u003cp\u003eAny Williams Sound transmitter operating in the 72–76 MHz wideband range, including the FM T55C\/T55CD FM+ series, PPA T45, and PPA T27. The receivers tune all 17 preset wideband channels in that band.\u003c\/p\u003e\u003ch3\u003eAre the receivers hearing aid compatible?\u003c\/h3\u003e\u003cp\u003eYes, when paired with a telecoil neckloop such as the NKL 001 (sold separately), which plugs into the receiver's 3.5 mm jack and couples inductively to telecoil-equipped hearing aids and cochlear implants. The ADA expects a percentage of provided receivers to be hearing aid compatible.\u003c\/p\u003e\u003ch3\u003eCan the fleet be converted to rechargeable operation?\u003c\/h3\u003e\u003cp\u003eYes. Every R38 has a battery-type slide switch and base charging contacts for Williams Sound CHG 3502 (2-bay) and CHG 3512 (12-bay) drop-in chargers, so the fleet can move to AA NiMH rechargeables without hardware changes.\u003c\/p\u003e\u003ch3\u003eCan I buy replacement earphones and batteries separately?\u003c\/h3\u003e\u003cp\u003eYes. The PPA R38N receiver, EAR 022 earphone, and BAT 001-2 battery packs are all available individually, which simplifies maintaining a sanitary earphone program and replacement stock.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies to the bundle?\u003c\/h3\u003e\u003cp\u003eEach receiver carries the Williams AV Lifetime PLUS Limited Warranty, with 90 days of coverage on most accessories such as earphones and batteries. Creation Networks can assist with fleet planning, charger sizing, and ADA compliance documentation.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739949465836,"sku":"PPA R38-20","price":4224.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r38-20-20-pack-fm-r38-receiver-bundle-creation-networks-21724.png?v=1757912713"},{"product_id":"williams-sound-ppa-r38n-fm-receiver","title":"Williams AV PPA R38N – Multi-Channel FM Receiver, OLED Display","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA R38N is a multi-channel FM assistive listening receiver with a high-resolution OLED screen, supplied without earphones or batteries for venues that standardize their own listening accessories or maintain sanitary single-use earphone stock. Functionally identical to the FM R38 kit version, it offers on-screen access to all 17 preset wideband frequencies in the 72–76 MHz hearing assistance band and is compatible with every Williams Sound 72–76 MHz wideband transmitter. It is the fleet-expansion receiver of choice for auditoriums, theaters, and houses of worship.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eMany facilities prefer to buy receivers bare: rental houses pair them with their own headphones, performing arts venues issue fresh sanitary earbuds per patron, and rechargeable fleets skip alkaline cells entirely. The PPA R38N serves exactly that purchasing pattern — it ships with a CLP 023 belt clip and a stereo plug, with earphones, headphones, neckloops, and batteries all available separately.\u003c\/p\u003e\u003cp\u003eThe receiver's 1-inch OLED display provides a quick view of status — channel or frequency readout, digital volume level, and a 4-step battery indicator — and the on-screen menu opens every user setting, including all 17 wideband channels. A step\/seek function increments channels manually or jumps to the next active broadcast, while channel lock keeps publicly loaned units on the house frequency. Digital tuning and digital squelch hold a stable, digitally synthesized signal with 65 dB minimum signal-to-noise ratio, and soft audio turn-on plus a battery-saving sleep mode round out the listener experience.\u003c\/p\u003e\u003cp\u003eThe 3.5 mm stereo jack supports stereo and mono earphones, headphones, and telecoil neckloops for hearing aid users. A slide switch in the battery compartment selects disposable alkaline or NiMH rechargeable operation — approximately 50 hours and 32 hours of runtime respectively — and base charging contacts drop straight into Williams Sound CHG 3502 and CHG 3512 chargers. The impact-resistant PC\/ABS body with aluminum faceplate is covered by the Williams AV Lifetime PLUS Limited Warranty. Note: a 72–76 MHz transmitter is required, and the receiver is FCC-approved for U.S. markets.\u003c\/p\u003e\u003cp\u003eNeed receivers with earphones and batteries included? Choose the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-fm-r38-receiver-kit\"\u003eFM R38 receiver kit\u003c\/a\u003e, or scale up with the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r38-20-20-pack-fm-r38-receiver-bundle\"\u003ePPA R38-20 twenty-pack bundle\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution OLED Display\u003c\/strong\u003e — A 1-inch screen presents channel or frequency, digital volume, and a 4-step battery level for fast status checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReceiver-Only Configuration\u003c\/strong\u003e — Ships without earphones or batteries so venues can standardize their own accessories or sanitary earbud program.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Wideband Channels On-Screen\u003c\/strong\u003e — Menu-driven selection spans the full 72–76 MHz band reserved for ADA hearing assistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Transmitter Compatibility\u003c\/strong\u003e — Works with all Williams Sound 72–76 MHz wideband transmitters, including FM+ and legacy PPA systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep\/Seek Tuning with Channel Lock\u003c\/strong\u003e — Users seek to the next active channel, and staff can lock receivers to the house frequency for events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Tuning and Squelch\u003c\/strong\u003e — Digitally synthesized reception keeps audio clear and stable with 65 dB minimum signal-to-noise ratio.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereo Headphone Jack\u003c\/strong\u003e — The 3.5 mm stereo output supports stereo and mono earphones, headphones, and telecoil neckloops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRechargeable or Alkaline Power\u003c\/strong\u003e — A battery-type slide switch and base charging contacts for CHG 3502\/3512 drop-in chargers suit both fleet strategies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-Saving Features\u003c\/strong\u003e — Sleep mode, auto-off, and soft audio turn-on conserve power and improve the listener experience.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Receiver electronics carry lifetime coverage, with 90 days on most accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries; 2.6 oz (73 g) without\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack PC\/ABS impact-resistant plastic with aluminum faceplate; hinged battery door; detachable belt clip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\" high-resolution OLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChannels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 wideband, accessed via on-screen menu; channel lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72.1–72.9, 74.7, 75.3–75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB SINAD (squelch defeated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 Hz–15 kHz, ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFM Deviation \/ De-Emphasis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±75 kHz \/ 75 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mW max @ 16 Ω; 3.5 mm stereo jack (stereo or mono devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) AA alkaline or (2) AA NiMH, selectable via slide switch (batteries not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs alkaline (BAT 001-2); approx. 32 hrs NiMH 1500 mAh (BAT 026-2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 mA nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase contacts for CHG 3502 \/ CHG 3512 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32–122°F (0–50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada; RoHS, WEEE compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA R38N receiver, (1) CLP 023 belt clip, (1) stereo plug; earphones and batteries sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty (90 days on most accessories)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739951726828,"sku":"PPA R38N","price":211.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-r38n-fm-receiver-creation-networks-28885.png?v=1757912717"},{"product_id":"williams-sound-ppa-t27-personal-pa®-compact-fm-transmitter","title":"Williams AV PPA T27 – Compact FM Assistive Listening Transmitter","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA T27 is a compact FM assistive listening transmitter that broadcasts a presenter's voice, music program, or other audio source up to 1,000 feet to listeners using R37, R38, or any FM receiver operating on the 72-76 MHz hearing assistance band. With a 3.5 mm microphone input and an RCA line-level input for sound system feeds, the T27 is the core of a large-area FM assistive listening system for houses of worship, auditoriums, and government meeting spaces working toward ADA compliance.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eSetup is straightforward for integrators and facilities staff alike: connect an electret microphone with a 3.5 mm plug for direct voice pickup, or feed program audio from the house mixer into the high-impedance, unbalanced RCA line input. A screwdriver-adjustable input attenuator sets level, and a high-contrast LED display with push-button frequency selection steps through all 17 wideband channels. Holding both frequency buttons for three seconds locks the channel, preventing accidental changes after commissioning.\u003c\/p\u003e\u003cp\u003eThe T27 is microprocessor-controlled and frequency-synthesized for ±0.005% stability, transmitting wideband FM at the maximum field strength allowed by FCC rules for a nominal range of up to 1,000 feet with the included ANT 021 rubber-duckie antenna. A 75-ohm F-connector antenna output supports the optional ANT 005 coaxial or ANT 024 dipole antenna for remote antenna placement in rack installations or RF-challenged rooms. The transmitter carries FCC Part 15 certification under the post-2016 auditory assistance emissions mandate.\u003c\/p\u003e\u003cp\u003ePair the T27 with \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r37-r37-fm-receiver-with-ear-013\"\u003ePPA R37 FM receivers\u003c\/a\u003e to complete the system, or see pre-configured options like the PPA VP 37 value pack in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Operating Range\u003c\/strong\u003e — The transmitter covers up to 1,000 feet (305 m) with the included ANT 021 antenna, serving large venues from a single unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Wideband Channels\u003c\/strong\u003e — Push-button frequency selection across the 72-76 MHz hearing assistance band allows multiple systems to coexist on one campus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMic and Line-Level Inputs\u003c\/strong\u003e — A 3.5 mm electret microphone jack and RCA line-level input accept either direct voice pickup or a feed from the house sound system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Lock\u003c\/strong\u003e — Holding both frequency buttons for three seconds locks the selected channel so settings survive after commissioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Contrast LED Display\u003c\/strong\u003e — The front-panel display shows the active frequency for quick verification by operators and AV techs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Antenna Options\u003c\/strong\u003e — A 75-ohm F-connector output supports the optional ANT 005 coaxial antenna for installed systems requiring remote antenna placement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFCC Part 15 Certified\u003c\/strong\u003e — The T27 holds a Grant of Certification under the FCC's 2016 emissions mandate for 72-76 MHz auditory assistance transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — The transmitter is backed by Williams AV's Lifetime PLUS Limited Warranty, with 90 days on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T27 transmitter, (1) ANT 021 antenna, (1) WCA 013 audio cable, (1) TFP 036 power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions \/ Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" W x 6.1\" L x 1.3\" H (104.1 x 154.9 x 33 mm); 7.8 oz (221 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e105-130 VAC, 50-60 Hz, 3.2 W at 120 VAC (110 V US plug only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 channels, 72.1-75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Selector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExternal push buttons, 17 channels, lockable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Field Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDoes not exceed 80 mV\/m @ 3 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (305 m) with ANT 021; optional ANT 005 coaxial antenna\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFM, 75 kHz max deviation (wideband); 75 µS pre-emphasis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.005% over 0-50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e85 Hz - 14 kHz ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDistortion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1% max THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB (with R35 receiver)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicrophone Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mini jack, supplies +DC for electret mics; 1-10 mV nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLine Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRCA jack, high impedance, unbalanced; 0.1-1 Vrms nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna Outputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThread mount for ANT 021\/ANT 025; RF connector for ANT 024 dipole or ANT 005 coaxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC (incl. Part 15), Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich receivers work with the PPA T27?\u003c\/h3\u003e\u003cp\u003eThe T27 is compatible with Williams Sound R37 and R38 receivers, and with any FM receiver operating on the 72-76 MHz hearing assistance band. Receivers are sold separately or in pre-packaged bundles.\u003c\/p\u003e\u003ch3\u003eCan I feed the T27 from my existing sound system?\u003c\/h3\u003e\u003cp\u003eYes. The rear-panel RCA line-level input accepts a high-impedance, unbalanced mono feed from a mixer or DSP output, with a screwdriver-adjustable attenuator to match levels from 0.1 to 1 Vrms nominal.\u003c\/p\u003e\u003ch3\u003eHow do I extend or relocate the antenna for an installed system?\u003c\/h3\u003e\u003cp\u003eIn addition to the included ANT 021 rubber-duckie antenna, the T27 provides a 75-ohm F-connector for the optional ANT 005 coaxial antenna or ANT 024 dipole. The FCC requires the ANT 021 remote installation to be professionally performed, making this a standard task for an AV integrator.\u003c\/p\u003e\u003ch3\u003eDoes the T27 help meet ADA requirements?\u003c\/h3\u003e\u003cp\u003eThe T27 transmits on the 72-76 MHz frequencies reserved for hearing assistance and, paired with neckloop-compatible R37 receivers, forms a large-area assistive listening system consistent with 2010 ADA guidelines for assembly spaces.\u003c\/p\u003e\u003ch3\u003eCan the T27 be used internationally?\u003c\/h3\u003e\u003cp\u003eThe transmitter is FCC approved for U.S. markets and is supplied with a 110 V US power supply only. The 72-76 MHz band is not authorized in all countries, so verify local radio regulations before deploying abroad.\u003c\/p\u003e\u003ch3\u003eWhat warranty applies?\u003c\/h3\u003e\u003cp\u003eThe PPA T27 carries the Williams AV Lifetime PLUS Limited Warranty, with 90 days on most accessories. Creation Networks supports system design and product selection for commercial assistive listening deployments.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739952087276,"sku":"PPA T27","price":840.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-t27-personal-pa-r-compact-fm-transmitter-creation-networks-18140.png?v=1757912719"},{"product_id":"williams-sound-ppa-t46-transmitter","title":"Williams AV PPA T46 – Bodypack FM Transmitter for Assistive Listening","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA T46 is a portable bodypack FM transmitter that broadcasts a presenter's voice on one of seventeen selectable channels in the 72-76 MHz hearing assistance band to listeners using R37, R37-8, or R38 receivers. With an OLED display, menu-driven controls, mic and auxiliary inputs, and up to 150 feet of range, it is the go-to mobile transmitter for classroom hearing assistance, tour groups, employee training, and business meetings where a fixed transmitter is impractical.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe T46's 1.25-inch OLED interface displays master and aux volume levels, mic mute status, settings lock, and battery level, while three menu buttons give the operator access to microphone and auxiliary gain, 8- or 17-channel mode, compression (1:1 or 2:1), and display settings. A momentary push button on the top bezel handles power and one-touch microphone mute — a small detail presenters appreciate during sidebar conversations. A dual-preset mode lets the user switch between two transmitting channel configurations, each with its own channel and volume parameters, which is useful for instructors who move between rooms or interpreters alternating assignments.\u003c\/p\u003e\u003cp\u003eThe 3.5 mm mic input accepts electret lavalier and headset microphones (the mic cord doubles as the transmit antenna), and the 2.5 mm stereo aux input brings in program audio from a media player or other line source. Selectable 2:1 audio compression keeps speech intelligible across varying talker levels. The transmitter runs up to 30 hours on two AA alkaline batteries or up to 20 hours on NiMH rechargeables, and recharges in Williams Sound CHG 3502 or CHG 3512 drop-in chargers. It is FCC Part 15 compliant, meets ADA guidelines, and is made in the USA.\u003c\/p\u003e\u003cp\u003eComplete the system with \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r37-r37-fm-receiver-with-ear-013\"\u003ePPA R37 FM receivers\u003c\/a\u003e, or consider the pre-packaged PFM PRO one-to-one system in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e17-Channel Selectable Operation\u003c\/strong\u003e — Digitally synthesized frequencies across 72-76 MHz with switchable 8- or 17-channel mode for compatibility with R35-8 receiver fleets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOLED Status Display\u003c\/strong\u003e — The 1.25-inch screen shows channel, mic and aux levels, mute, lock, and battery status at a glance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Touch Mic Mute\u003c\/strong\u003e — The top-bezel power button doubles as an instant microphone mute for private sidebar conversations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Preset Channel Mode\u003c\/strong\u003e — Store two complete channel and volume configurations and switch between them without re-entering the menu.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMic and Aux Inputs\u003c\/strong\u003e — A 3.5 mm electret mic input and 2.5 mm stereo aux input let the T46 broadcast voice and program audio together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Compression\u003c\/strong\u003e — Menu-selectable 1:1 or 2:1 audio compression maintains speech intelligibility across varying talker levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 30 Hours Battery Life\u003c\/strong\u003e — Two AA alkaline batteries deliver up to 30 hours; NiMH rechargeables run up to 20 hours and recharge in drop-in chargers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA-Aligned and FCC Certified\u003c\/strong\u003e — The T46 meets ADA guidelines, complies with FCC Part 15, and is made in the USA with a Lifetime PLUS Limited Warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eConference room\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T46 transmitter, (1) BAT 001-2 AA batteries, (1) CLP 023 belt clip, (1) WCA 087 aux input cable; microphone sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.1\" L x 2.8\" W x 1.1\" D (104 x 71 x 28 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.6 oz (74 g) without batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShatter-resistant PC\/ABS plastic with scratch-resistant aluminum faceplate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequencies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17 selectable channels, 72.1-75.9 MHz; switchable 8- or 17-channel mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 30 hrs on (2) AA alkaline; up to 20 hrs on (2) AA NiMH (BAT 026-2), 14-16 hr recharge via CHG 3502\/3512\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.005%, frequency synthesized, crystal reference, PLL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWideband FM, 75 kHz peak, 75 µS pre-emphasis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 mV\/m at 3 m (max allowed by FCC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRange\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 150 ft (45 m) with PPA R37 receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 Hz - 13 kHz ±3 dB at 1% max THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 dB typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMic Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono jack with electret bias, 25 dB adjustable gain range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAux Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5 mm stereo jack, 60 dB adjustable gain range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Compression\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1:1 (off) or 2:1 (on), menu selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Receivers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePFM R31, R32, R33, R36; PPA R35, R35-8, R37, R1600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFCC (Part 15), Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich microphones work with the T46?\u003c\/h3\u003e\u003cp\u003eThe 3.5 mm mono mic input supplies bias voltage for electret microphones, including Williams Sound lavalier and headset mics. A microphone is not included and is sold separately.\u003c\/p\u003e\u003ch3\u003eWhich receivers pair with the T46?\u003c\/h3\u003e\u003cp\u003eThe T46 broadcasts to Williams Sound receivers including the PPA R37, R35, R35-8, R1600, and PFM-series receivers operating on the 72-76 MHz band. The switchable 8-channel mode aligns channel numbering with PPA R35-8 receiver fleets.\u003c\/p\u003e\u003ch3\u003eWhat is the practical operating range?\u003c\/h3\u003e\u003cp\u003eNominal range is up to 150 feet (45 m) with a PPA R37 receiver — well suited to classrooms, meeting rooms, and walking tours. For large-area coverage up to 1,000 feet, specify a fixed transmitter such as the PPA T27 instead.\u003c\/p\u003e\u003ch3\u003eCan the T46 broadcast program audio along with the microphone?\u003c\/h3\u003e\u003cp\u003eYes. The 2.5 mm stereo aux input accepts a media player or other line source via the included WCA 087 cable, with independent menu-adjustable gain for mic and aux signals.\u003c\/p\u003e\u003ch3\u003eIs the T46 rechargeable?\u003c\/h3\u003e\u003cp\u003eYes, when fitted with AA NiMH batteries (BAT 026-2) and set to NiMH mode, the T46 recharges in Williams Sound CHG 3502 or CHG 3512 drop-in chargers in approximately 14-16 hours.\u003c\/p\u003e\u003ch3\u003eWhat warranty and compliance apply?\u003c\/h3\u003e\u003cp\u003eThe T46 is FCC Part 15 compliant, holds a Grant of Certification under the FCC's 2016 auditory assistance emissions mandate, meets ADA guidelines, and carries the Williams AV Lifetime PLUS Limited Warranty with 90 days on accessories.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739952742636,"sku":"PPA T46","price":727.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-t46-bodypack-transmitter-creation-networks-33755.png?v=1757912721"},{"product_id":"williams-sound-ppa-vp-37-personal-fm-value-pack-system-with-earbud","title":"Williams AV PPA VP 37 – Personal FM Assistive Listening Value Pack","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA VP 37 is a complete large-area FM assistive listening system that broadcasts a presenter's voice, music program, or audio service up to 1,000 feet on the 72-76 MHz hearing assistance band. The value pack pairs a PPA T27 transmitter with four R37 receivers, earbuds, two neckloops for telecoil-equipped hearing aids, an ADA wall plaque, antenna, audio cable, and power supply — everything a house of worship, courtroom, or meeting facility needs to deploy ADA-compliant hearing assistance in one purchase.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eAt the core of the system is the T27 transmitter, with an LED display panel and push-button channel selection across 17 available channels. It accepts a 3.5 mm electret microphone for direct voice pickup or a line-level RCA feed from the house sound system, so it drops into existing AV infrastructure with a single cable. The included ANT 021 antenna provides up to 1,000 feet of nominal range, and the channel-lock feature keeps the system on its commissioned frequency.\u003c\/p\u003e\u003cp\u003eListeners use the single-channel-locked R37 receivers with the included EAR 013 earbuds, or with one of the two NKL 001 neckloops that couple inductively to telecoil-equipped hearing aids — the hearing aid compatible provision required under the 2010 ADA guidelines. Each receiver adjusts volume independently, runs up to 50 hours on the included AA alkaline batteries, and supports a future move to NiMH rechargeables with Williams Sound drop-in chargers. The IDP 008 wall plaque signals assistive listening availability to patrons at the entrance, completing the compliance picture.\u003c\/p\u003e\u003cp\u003eNeed more receivers as attendance grows? Add individual \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-r37-r37-fm-receiver-with-ear-013\"\u003ePPA R37 receivers\u003c\/a\u003e or multi-pack bundles from the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks. A no-earbud version of this system is available as the PPA VP 37-00.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete ADA Starter System\u003c\/strong\u003e — Transmitter, four receivers, earbuds, two neckloops, wall plaque, antenna, cable, and power supply deploy hearing assistance in one package.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Coverage\u003c\/strong\u003e — The PPA T27 transmitter with ANT 021 antenna covers up to 1,000 feet, serving large assembly spaces from one unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Push-button frequency selection across the 72-76 MHz hearing assistance band allows multiple systems to coexist on a campus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecoil Neckloop Support\u003c\/strong\u003e — Two included NKL 001 neckloops connect listeners with telecoil-equipped hearing aids, satisfying the ADA's hearing aid compatible receiver requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMic and Line-Level Inputs\u003c\/strong\u003e — The transmitter accepts a 3.5 mm electret microphone or an RCA line feed from the existing house sound system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Receiver Battery Life\u003c\/strong\u003e — Each R37 receiver runs approximately 50 hours on two AA alkaline batteries, with low-battery indicators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque notifies patrons that assistive listening is available, as ADA guidelines direct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Transmitter and receivers are backed by Williams AV's Lifetime PLUS Limited Warranty, with 90 days on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T27 transmitter, (4) PPA R37 receivers, (4) BAT 001-2 AA batteries, (4) EAR 013 earbuds, (2) NKL 001 neckloops, (1) IDP 008 wall plaque, (1) WCA 013 audio cable, (1) ANT 021 antenna, (1) TFP 036 power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72-76 MHz, 17 available channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (305 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm electret mic jack; RCA line-level (high-Z, unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono jack; earphone, headphone, and neckloop compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline per receiver\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna (ANT 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 ohms nominal, 9 in.; FCC requires professional installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEarbud (EAR 013)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono, 32 ohms, 20 Hz - 20 kHz, 13 mm driver, 39 in. cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWall Plaque (IDP 008)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10-3\/8\" L x 6-1\/4\" W x 1\/8\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110 V power supply, US plug type only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransmitter FCC Part 15 compliant; system complies with 2010 ADA hearing assistance guidelines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes the VP 37 meet ADA requirements out of the box?\u003c\/h3\u003e\u003cp\u003eThe system complies with 2010 ADA guidelines for hearing assistance: it transmits on the reserved 72-76 MHz band, includes neckloops for hearing aid compatible coupling, and ships with the required notification plaque. Verify your venue's seat-count-based receiver quantity against current ADA tables and add receivers as needed.\u003c\/p\u003e\u003ch3\u003eHow does the system connect to my existing sound system?\u003c\/h3\u003e\u003cp\u003eThe T27 transmitter's RCA line-level input accepts an unbalanced mono feed from your mixer or DSP using the included WCA 013 audio cable, with a screwdriver-adjustable attenuator for level matching.\u003c\/p\u003e\u003ch3\u003eCan I add more receivers later?\u003c\/h3\u003e\u003cp\u003eYes. Any Williams Sound 72-76 MHz wideband receiver — individual R37 units or 12- and 20-pack bundles — will tune to the same channel as this system.\u003c\/p\u003e\u003ch3\u003eHow do hearing aid users connect?\u003c\/h3\u003e\u003cp\u003eThe two included NKL 001 neckloops plug into the R37 receiver's 3.5 mm jack and couple inductively to any telecoil-equipped hearing aid or cochlear implant processor.\u003c\/p\u003e\u003ch3\u003eIs professional installation required?\u003c\/h3\u003e\u003cp\u003eDay-to-day setup is plug-and-play, but the FCC requires the ANT 021 antenna to be professionally installed for fixed installations — standard work for a commercial AV integrator.\u003c\/p\u003e\u003ch3\u003eCan this system be used outside the U.S.?\u003c\/h3\u003e\u003cp\u003eThe system is FCC approved for U.S. markets, ships with a US-plug 110 V power supply, and the 72-76 MHz band is not authorized in all countries. Check local radio regulations before deploying internationally.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739954839788,"sku":"PPA VP 37","price":1440.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-vp-37-personal-fm-value-pack-system-with-earbud-creation-networks-85193.png?v=1757912722"},{"product_id":"williams-sound-ppa-vp-37-00-personal-fm-value-pack-system-without-earbuds","title":"Williams AV PPA VP 37-00 – FM Assistive Listening System, No Earphones","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Williams AV PPA VP 37-00 is a large-area, portable FM assistive listening system that broadcasts a presenter's voice, music program, or audio service up to 1,000 feet on the 72-76 MHz hearing assistance band. The package combines a PPA T27 transmitter with four R37 receivers, batteries, antenna, ADA wall plaque, audio cable, and power supply — but no earphones or neckloops, so facilities can standardize on their own listening devices or hygienic single-use earbuds.\u003c\/p\u003e\u003ch2\u003eProduct Description\u003c\/h2\u003e\u003cp\u003eThe system is built around the T27 transmitter, featuring an LED display panel and push-button channel selection across 17 available channels. It connects to a 3.5 mm electret microphone for direct voice pickup or takes a line-level RCA feed from the existing house sound system using the included WCA 013 audio cable, making integration into an installed AV system a single-cable task. The ANT 021 antenna provides nominal coverage up to 1,000 feet, and channel lock keeps the system on its commissioned frequency.\u003c\/p\u003e\u003cp\u003eListeners use the four included R37 receivers, each with independent volume control and approximately 50 hours of runtime on the included AA alkaline batteries. The receivers' 3.5 mm stereo\/mono jacks accept any low-impedance earphone or headphone, and drive neckloops for telecoil-equipped hearing aids — the connection venues add to meet the ADA's hearing aid compatible receiver requirement. The IDP 008 wall plaque announces assistive listening availability at the entrance, and the system complies with 2010 ADA guidelines for hearing assistance.\u003c\/p\u003e\u003cp\u003eIf you prefer a turnkey package with earbuds and neckloops included, see the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-ppa-vp-37-personal-fm-value-pack-system-with-earbud\"\u003ePPA VP 37 value pack with earbuds\u003c\/a\u003e. Earphones, neckloops, and additional receivers are available in the \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete System, Your Earphones\u003c\/strong\u003e — Transmitter, four receivers, batteries, antenna, signage, cable, and power supply ship together while you supply preferred earphones or neckloops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1,000-Foot Coverage\u003c\/strong\u003e — The PPA T27 transmitter with ANT 021 antenna covers up to 1,000 feet, serving large assembly spaces from a single unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 Selectable Channels\u003c\/strong\u003e — Push-button frequency selection across the 72-76 MHz hearing assistance band allows multiple systems to operate on one campus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMic and Line-Level Inputs\u003c\/strong\u003e — The transmitter accepts a 3.5 mm electret microphone or an RCA line feed from the house sound system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeckloop-Ready Receivers\u003c\/strong\u003e — Each R37's 3.5 mm jack drives neckloops for telecoil-equipped hearing aids in support of ADA hearing aid compatibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Receiver Battery Life\u003c\/strong\u003e — Approximately 50 hours per receiver on two AA alkaline batteries, with low-battery indicators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Signage Included\u003c\/strong\u003e — The IDP 008 wall plaque notifies patrons that assistive listening is available, as ADA guidelines direct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable or Installed Use\u003c\/strong\u003e — The compact transmitter suits portable deployments while the F-connector antenna output supports fixed installations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Includes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(1) PPA T27 transmitter, (4) PPA R37N receivers, (4) BAT 001-2 AA alkaline batteries, (1) ANT 021 antenna, (1) IDP 008 ADA wall plaque, (1) WCA 013 audio cable, (1) TFP 036 power supply; no earphones or neckloops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e72-76 MHz, 17 available channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft (305 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Inputs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm electret mic jack; RCA line-level (high-Z, unbalanced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono jack; earphone, headphone, and neckloop compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Battery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 50 hrs on (2) AA alkaline per receiver; NiMH rechargeable capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna (ANT 021)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 ohms nominal, 9 in.; FCC requires professional installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWall Plaque (IDP 008)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10-3\/8\" L x 6-1\/4\" W x 1\/8\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e110 V power supply, US plug type only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransmitter FCC Part 15 compliant; system complies with 2010 ADA hearing assistance guidelines\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty; 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhy choose the VP 37-00 over the VP 37?\u003c\/h3\u003e\u003cp\u003eThe VP 37-00 omits earbuds and neckloops, which suits facilities that issue their own hygienic single-use earphones, already stock neckloops, or standardize on specific headphones. The VP 37 includes four earbuds and two neckloops if you want a turnkey package.\u003c\/p\u003e\u003ch3\u003eWhich earphones and neckloops work with the receivers?\u003c\/h3\u003e\u003cp\u003eAny low-impedance earphone or headphone with a 3.5 mm plug works, including Williams Sound EAR 013, EAR 022, and HED 021 models, plus NKL 001 neckloops for telecoil-equipped hearing aids.\u003c\/p\u003e\u003ch3\u003eHow does the system connect to an installed sound system?\u003c\/h3\u003e\u003cp\u003eThe T27's RCA line-level input accepts an unbalanced mono feed from a mixer or DSP output using the included audio cable, with an adjustable attenuator for level matching.\u003c\/p\u003e\u003ch3\u003eDoes this system support ADA compliance?\u003c\/h3\u003e\u003cp\u003eYes — it operates on the 72-76 MHz hearing assistance band, includes the required notification plaque, and the receivers are neckloop compatible. Add neckloops to meet the hearing aid compatible receiver counts in current ADA tables for your seating capacity.\u003c\/p\u003e\u003ch3\u003eCan I expand the receiver count later?\u003c\/h3\u003e\u003cp\u003eYes. Any Williams Sound 72-76 MHz wideband receiver tunes to the same channels, and 12- and 20-pack R37 bundles are available for larger venues.\u003c\/p\u003e\u003ch3\u003eCan this system be used outside the U.S.?\u003c\/h3\u003e\u003cp\u003eIt is FCC approved for U.S. markets and ships with a US-plug power supply. The 72-76 MHz band is not authorized in all countries, so verify local radio regulations first.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739958280428,"sku":"PPA VP 37-00","price":1294.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-ppa-vp-37-00-personal-fm-value-pack-system-without-earbuds-creation-networks-35062.jpg?v=1757912728"},{"product_id":"williams-sound-tgs-pro-737-single-channel-fm-tour-guide-system","title":"Williams AV TGS PRO 737 – Single-Channel FM Tour Guide System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Williams AV TGS PRO 737 is a single-channel FM tour guide system that lets tour participants — including those with hearing difficulties — listen directly to the guide and control their own volume. The package combines a PPA T46 body-pack FM transmitter with ten PPA R37 single-channel receivers, a MIC 100 headset microphone, batteries, and a hard carry case. As a portable assistive listening system, it requires no installation and is designed to meet Americans with Disabilities Act (ADA) accessibility requirements, making it a straightforward solution for facility tours, museum programs, and government buildings.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe system operates on the 72–76 MHz auditory assistance band with 17 selectable wideband channels on the transmitter. The PPA R37 receiver tunes to a single FM channel via a seek button inside its battery compartment and can then be channel-locked, which keeps operation simple for tour participants — power on, adjust volume, listen. Each receiver delivers 200 Hz – 15 kHz audio response with a 65 dB minimum signal-to-noise ratio and runs up to 50 hours on two AA alkaline batteries or up to 32 hours on NiMH rechargeables.\u003c\/p\u003e\n\u003cp\u003eThe PPA T46 transmitter gives the guide an OLED status display, a 3.5 mm microphone input, and a 2.5 mm auxiliary input for broadcasting any line-level audio source such as a media player or mixer feed. A dual-channel preset mode lets the operator switch between two complete transmit configurations, and selectable 2:1 audio compression improves intelligibility in noisy environments. The microphone cord doubles as the transmit antenna, keeping the body-pack compact, and range extends to approximately 150 ft (45 m).\u003c\/p\u003e\n\u003cp\u003eBecause the system needs no commissioning, it suits rental fleets, docent programs, plant tours, and ADA assistive listening compliance for guided experiences. Receivers include belt clips for hands-free use; earphones, headphones, and neckloops are sold separately so each facility can standardize on its preferred listening accessory. Note that the system is FCC-approved for U.S. operation on 72–76 MHz and FCC rules limit use of this equipment to auditory assistance.\u003c\/p\u003e\n\u003cp\u003eNeed multi-channel receivers for concurrent tour groups? See the \u003ca href=\"https:\/\/creationnetworks.net\/products\/williams-sound-tgs-pro-738-multi-channel-fm-tour-guide-system\"\u003eTGS PRO 738 multi-channel FM system\u003c\/a\u003e, or browse the full \u003ca href=\"https:\/\/creationnetworks.net\/collections\/williams-av\"\u003eWilliams AV assistive listening collection\u003c\/a\u003e at Creation Networks.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 11-User FM Package\u003c\/strong\u003e — One PPA T46 transmitter and ten PPA R37 receivers cover a full tour group with no additional infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA-Oriented Design\u003c\/strong\u003e — The system is designed to meet ADA accessibility requirements for assistive listening on guided tours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Installation Required\u003c\/strong\u003e — The entire system is portable and body-pack based, saving installation time and cost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField-Tunable Single-Channel Receivers\u003c\/strong\u003e — The R37 seeks to any of 17 preset channels and locks there, keeping end-user operation simple.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — Receivers run up to 50 hours on AA alkaline batteries or up to 32 hours on NiMH rechargeables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuxiliary Audio Input\u003c\/strong\u003e — The transmitter's 2.5 mm aux jack broadcasts any audio source alongside or instead of the microphone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Channel Preset Mode\u003c\/strong\u003e — The PPA T46 stores two complete transmit configurations for fast changeovers between groups or rooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable Audio Compression\u003c\/strong\u003e — 2:1 compression can be enabled in the menu to improve speech intelligibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime PLUS Limited Warranty\u003c\/strong\u003e — Transmitter and receivers are covered by a Lifetime PLUS Limited Warranty with 90 days on accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eTraining room\u003c\/li\u003e\n\u003cli\u003eMulti-purpose room\u003c\/li\u003e\n\u003cli\u003eCommercial meeting space\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003ePPA T46 Transmitter\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.1\" L x 2.8\" W x 1.1\" D (104 mm x 71 mm x 28 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.6 oz (74 g), no batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Options\u003c\/td\u003e\n\u003ctd\u003e2 x AA alkaline (up to 30 hrs) or 2 x AA NiMH (up to 20 hrs; recharges in 14–16 hrs with CHG 3502\/CHG 3512)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003eSelectable, 17 channels, 72.1–75.9 MHz; switchable 8 or 17 channel mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStability\u003c\/td\u003e\n\u003ctd\u003e±0.005%, frequency synthesized, crystal reference, PLL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModulation\u003c\/td\u003e\n\u003ctd\u003eWide-band FM, 75 kHz peak, 75 µS pre-emphasis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRF Output\u003c\/td\u003e\n\u003ctd\u003e80 mV\/m at 3 m (max allowed by FCC rules)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRange\u003c\/td\u003e\n\u003ctd\u003e150 ft (45 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e180 Hz to 13 kHz, ±3 dB at 1% max THD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e65 dB (typical) transmitted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMic Input\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono jack with electret mic bias, 25 dB adjustable gain range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAux Input\u003c\/td\u003e\n\u003ctd\u003e2.5 mm stereo jack, 60 dB adjustable gain range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Compression\u003c\/td\u003e\n\u003ctd\u003e1:1 (off) or 2:1 (on), menu selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eOLED status and menu display\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Receivers\u003c\/td\u003e\n\u003ctd\u003ePFM R31, PFM R32, PFM R33, PFM R36, PPA R35, PPA R37, PPA R35-8, PPA R1600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty, 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003ePPA R37 Receiver\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e4.1\" x 2.85\" x 1.38\" (104 x 72 x 35 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.6 oz (130 g) with batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003e2 x AA alkaline or 2 x AA NiMH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Life\u003c\/td\u003e\n\u003ctd\u003eAlkaline (BAT 001): approx. 50 hrs; NiMH (BAT 026, 1500 mAh): approx. 32 hrs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e17, accessed via seek button in battery compartment; channel lock capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Frequencies\u003c\/td\u003e\n\u003ctd\u003e72.1–75.9 MHz (17 preset wideband channels)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e2 µV at 12 dB Sinad with squelch defeated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e200 Hz – 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n\u003ctd\u003e65 dB min @ 100 µV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudio Output\u003c\/td\u003e\n\u003ctd\u003e35 mW max, peak into 16 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Connector\u003c\/td\u003e\n\u003ctd\u003e3.5 mm stereo\/mono phone jack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceive Antenna\u003c\/td\u003e\n\u003ctd\u003eIntegral with earphone\/headphone cord\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto Shut-Off\u003c\/td\u003e\n\u003ctd\u003eSleep mode after approx. 6 minutes of no RF signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging\u003c\/td\u003e\n\u003ctd\u003eCharger contacts for CHG 3512 \/ CHG 3502 drop-in chargers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApprovals\u003c\/td\u003e\n\u003ctd\u003eFCC, Industry Canada, RoHS, WEEE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eLifetime PLUS Limited Warranty, 90 days on most accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eMIC 100 Headset Microphone\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eElement\u003c\/td\u003e\n\u003ctd\u003eElectret condenser\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePick-Up Pattern\u003c\/td\u003e\n\u003ctd\u003eUni-directional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e50 Hz – 16 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e-70 dB ±3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlug\u003c\/td\u003e\n\u003ctd\u003e3.5 mm mono, right-angle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCord Length\u003c\/td\u003e\n\u003ctd\u003e47.3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003eCCS 056 S Carry Case\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior Dimensions\u003c\/td\u003e\n\u003ctd\u003e13.0\" W x 18.0\" L x 6.7\" H (33 cm x 46 cm x 17 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior Dimensions\u003c\/td\u003e\n\u003ctd\u003e15.7\" W x 19.7\" L x 7.2\" H (40 cm x 50 cm x 18 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (empty)\u003c\/td\u003e\n\u003ctd\u003e6.6 lbs (3 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCopolymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes the TGS PRO 737 include earphones?\u003c\/h3\u003e\n\u003cp\u003eNo. The package includes the transmitter, ten receivers, headset microphone, batteries, and carry case. Earphones, headphones, and neckloops are sold separately so facilities can standardize on their preferred listening accessory, including neckloops for hearing aid telecoil users.\u003c\/p\u003e\n\u003ch3\u003eDoes the system satisfy ADA assistive listening requirements?\u003c\/h3\u003e\n\u003cp\u003eThe system is designed to meet ADA accessibility requirements by letting participants with hearing difficulties listen directly to the guide with individual volume control. Confirm receiver counts and neckloop provisions against the ADA requirements for your specific venue.\u003c\/p\u003e\n\u003ch3\u003eCan it be used outside the United States?\u003c\/h3\u003e\n\u003cp\u003eThe system is FCC-approved for U.S. operation on the 72–76 MHz band and cannot be used in all countries. Check your government's radio regulations for 72–76 MHz operation before deploying internationally.\u003c\/p\u003e\n\u003ch3\u003eHow do single-channel R37 receivers change channels?\u003c\/h3\u003e\n\u003cp\u003eA seek button inside the battery compartment steps through 17 preset wideband channels, and the receiver can then be channel-locked. This keeps day-to-day operation simple for tour participants while still allowing staff to retune.\u003c\/p\u003e\n\u003ch3\u003eCan I broadcast a line-level source instead of a microphone?\u003c\/h3\u003e\n\u003cp\u003eYes. The PPA T46 transmitter has a 2.5 mm auxiliary input with 60 dB of adjustable gain, so you can feed audio from a mixer, media player, or other source.\u003c\/p\u003e\n\u003ch3\u003eAre rechargeable batteries supported?\u003c\/h3\u003e\n\u003cp\u003eYes. Both transmitter and receivers accept AA NiMH batteries (BAT 026) and have drop-in charger contacts compatible with Williams Sound CHG 3502 and CHG 3512 chargers.\u003c\/p\u003e\n\u003ch3\u003eWhat warranty covers the system?\u003c\/h3\u003e\n\u003cp\u003eThe transmitter and receivers carry a Lifetime PLUS Limited Warranty; accessories such as the microphone are covered for 90 days.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":43739960049900,"sku":"TGS PRO 737","price":2448.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/products\/williams-sound-tgs-pro-737-single-channel-fm-tour-guide-system-creation-networks-70213.png?v=1757912734"}],"url":"https:\/\/creationnetworks.net\/collections\/williams-av-fm-assistive-listening.oembed","provider":"Creation Networks","version":"1.0","type":"link"}