{"product_id":"williams-av-fm-plus-large-area-dual-fm-and-wi-fi-als-with-4-fm-r37-receivers","title":"Williams AV FM 557 PRO WAP – Dual FM \u0026 Wi-Fi Assistive Listening System","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eWilliams AV FM 557 PRO WAP\u003c\/strong\u003e is a large-area dual FM and Wi-Fi assistive listening system for auditoriums, houses of worship, and government spaces. It delivers audio over 72 MHz FM to an unlimited number of receivers and over Wi-Fi to personal devices, making it a flexible commercial assistive listening system for large rooms. This PRO WAP configuration bundles four R37 receivers, a wireless access point, coax cable, and a rack panel kit for professional installation.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eThe FM 557 PRO WAP is a turnkey large-area assistive listening system that combines traditional FM broadcast with Wi-Fi streaming to smartphones through the WaveCAST app. The FM+ transmitter broadcasts on 17 wideband channels across the 72.1–75.9 MHz band to an unlimited number of RF listeners, or to up to 45 devices over Wi-Fi in unicast mode. RF coverage reaches up to 1,000 ft (304 m) with the supplied screw-on antenna, and audio performance includes a signal-to-noise ratio of 64 dB or greater with 31 Hz–16 kHz (±3 dB) response. The package includes four PPA R37 body-pack receivers, surround earphones, neckloops, a multi-bay charger, the included wireless access point for Wi-Fi delivery, coax cable, and a rack panel kit for clean rack-mount installation. This system suits venues that must serve both dedicated receivers for ADA compliance and personal-device listeners. Expand with additional \u003ca href=\"https:\/\/creationnetworks.net\/search?q=PPA%20R37\"\u003eR37 receivers\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/search?q=EAR%20022\"\u003eearphones\u003c\/a\u003e as needed.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual FM and Wi-Fi delivery\u003c\/strong\u003e — Broadcast to unlimited FM receivers and to personal devices over Wi-Fi from one transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17 wideband channels\u003c\/strong\u003e — Frequency-agile operation across 72.1–75.9 MHz for multi-system environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-range coverage\u003c\/strong\u003e — Up to 1,000 ft (304 m) RF range for large venues.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall-ready package\u003c\/strong\u003e — Includes four R37 receivers, wireless access point, coax cable, and rack panel kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA-oriented\u003c\/strong\u003e — Serves dedicated assistive-listening receivers alongside personal-device users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional audio\u003c\/strong\u003e — 64 dB+ SNR and 31 Hz–16 kHz (±3 dB) response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack-mountable\u003c\/strong\u003e — Rack panel kit for standard equipment racks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuditorium and house of worship assistive listening\u003c\/li\u003e\n\u003cli\u003eGovernment spaces and commercial meeting spaces\u003c\/li\u003e\n\u003cli\u003eMulti-purpose rooms and training rooms\u003c\/li\u003e\n\u003cli\u003eConference rooms and all-hands rooms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;min-width:420px\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003eDual FM (72 MHz) + Wi-Fi (WaveCAST)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eFM channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e17 wideband, 72.1–75.9 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003eUnlimited FM receivers; up to 45 Wi-Fi devices (unicast)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eRF range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003eUp to 1,000 ft (304 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eSNR \/ response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e64 dB+; 31 Hz–16 kHz (±3 dB); THD \u0026lt;0.25% @ 1 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e4 x PPA R37 receivers, WAP, earphones, neckloops, charger, coax, rack panel kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px\"\u003e2-year parts and labor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eFull specifications: \u003ca href=\"https:\/\/williamsav.com\/product_specs\/fm-557-systems-specifications\/\"\u003eWilliams AV FM 557 systems specifications\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan listeners use their phones instead of a receiver?\u003c\/strong\u003e\u003cbr\u003eYes. The included wireless access point streams audio over Wi-Fi to smartphones via the WaveCAST app, alongside the FM receivers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow many people can it serve?\u003c\/strong\u003e\u003cbr\u003eUnlimited listeners on FM receivers, plus up to 45 devices over Wi-Fi in unicast mode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat coverage should we expect?\u003c\/strong\u003e\u003cbr\u003eUp to 1,000 ft (304 m) via FM with the supplied antenna, depending on venue construction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it rack-mountable?\u003c\/strong\u003e\u003cbr\u003eYes. The package includes a rack panel kit and coax cable for professional rack installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it help meet ADA requirements?\u003c\/strong\u003e\u003cbr\u003eIt provides dedicated assistive-listening receivers and neckloops for telecoil users, which support ADA assistive-listening provisions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat warranty and support are included?\u003c\/strong\u003e\u003cbr\u003eTwo-year parts and labor; Creation Networks can assist with design and integration.\u003c\/p\u003e","brand":"Williams AV","offers":[{"title":"Default Title","offer_id":47976454521068,"sku":"FM 557 PRO WAP","price":3295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/fm-557-Pro-WAP-4-recievers-01_43c6d4d0-f479-4649-ab27-5e61c7193ccb.png?v=1784686625","url":"https:\/\/creationnetworks.net\/products\/williams-av-fm-plus-large-area-dual-fm-and-wi-fi-als-with-4-fm-r37-receivers","provider":"Creation Networks","version":"1.0","type":"link"}