{"product_id":"rdl-sf-tprs12a","title":"RDL SF-TPRS12A – Format-A 12-Channel Twisted Pair Sender\/Receiver","description":"\u003ch2\u003eWhat is the RDL SF-TPRS12A?\u003c\/h2\u003e\u003cp\u003eThe RDL SF-TPRS12A is a Format-A twisted pair chassis with four audio sending sections and four audio receiving sections. It sends 12 balanced line-level channels and receives 12 channels over standard twisted pair cable using RJ45 connectors. Local power connected to the chassis also feeds the remote Format-A modules on each RJ45, with fault protection on every port. It is a central hub for analog audio distribution across large facilities, campuses and multi-room installations.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2023\/10\/sf-tprs12a-1.jpg\" alt=\"RDL SF-TPRS12A Format-A 12-Channel Twisted Pair Sender\/Receiver\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eEach of the four sending sections accepts three +4 dBu balanced line-level sources on a detachable terminal block. Each section converts its three signals and transmits them on pairs A, B and C of the associated RJ45 connector. Because the sender feeds all three signal pairs, no other sending modules may be connected on the same cable as each RJ45 output. Each of the four receiving sections receives up to three audio sources and provides three outputs corresponding to pairs A, B and C. A studio-quality buffer amplifier feeds +4 dBu balanced outputs through a detachable terminal block, with +22 dBu maximum level. Bridging inputs allow connection to the LOOP OUT jack of other receivers, and Format-A receivers allow up to 10 receiver outputs per cable pair. The chassis is powered from 24 Vdc on the power jack or terminal block, and that power also feeds all modules connected to the eight RJ45 jacks. Each RJ45 power feed is protected by an automatically resetting fuse, and front-panel green LEDs show valid module power on each port. RDL recommends the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24v3a\"\u003ePS-24V3A\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24v3\"\u003ePS-24V3\u003c\/a\u003e supply; mounting options include the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-sf-ra1\"\u003eSF-RA1 rack adapter\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-sf-ucb2\"\u003eSF-UCB2 brackets\u003c\/a\u003e, and the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-sf-tps24a\"\u003eRDL SF-TPS24A\u003c\/a\u003e and \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-sf-tpr24a\"\u003eRDL SF-TPR24A\u003c\/a\u003e are 24-channel send-only and receive-only versions.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 channels each way\u003c\/strong\u003e — Four three-pair sending sections and four three-pair receiving sections in one chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e+4 dBu balanced I\/O\u003c\/strong\u003e — Balanced line-level inputs and outputs on detachable terminal blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote module power\u003c\/strong\u003e — Local 24 Vdc power feeds all Format-A modules connected to the RJ45 jacks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring fault protection\u003c\/strong\u003e — An automatically resetting fuse protects the power feed on each RJ45.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower status LEDs\u003c\/strong\u003e — A green LED per section confirms valid remote module power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStudio-quality circuitry\u003c\/strong\u003e — Precision active balanced circuits with THD+N under 0.005%.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAuditorium\u003c\/li\u003e\n\u003cli\u003eGovernment space\u003c\/li\u003e\n\u003cli\u003eHouse of worship\u003c\/li\u003e\n\u003cli\u003eBroadcast studio\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;-webkit-overflow-scrolling:touch\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width:44%\"\u003e\n\u003ccol style=\"width:56%\"\u003e\n\u003c\/colgroup\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eSF-TPRS12A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSending inputs (12)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e20 kΩ balanced, detachable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSending input level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu balanced; +22 dBu maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSending output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eRDL TP Format-A, RJ45; pairs A, B, C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSending CMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 60 dB (50 Hz to 150 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eSending crosstalk\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 85 dB (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eReceiving inputs (4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eRDL Format-A, RJ45; pairs A, B, C per section\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eReceiving outputs (12)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e150 Ω balanced, detachable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eReceiving output level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e+4 dBu balanced nominal; +22 dBu maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eReceiving CMRR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 80 dB (50 Hz to 150 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e10 Hz to 50 kHz (±0.1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 0.005%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eNoise below +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026lt; 90 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eHeadroom above +4 dBu\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e\u0026gt; 18 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower connections (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003ePower jack; detachable terminal block\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003ePower requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e24 Vdc @ 400 mA plus connected loads (1.6 A max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eOperating environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e0° C to 55° C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e8.74 in W x 1.68 in H x 5.78 in D (22.2 x 4.27 x 14.68 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eShipping weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e2.65 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eCompliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003eTAA compliant (per RDL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px;vertical-align:top\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:6px\"\u003e7-year RDL warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat is RDL Format-A?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFormat-A is RDL's twisted pair audio format that carries balanced audio on pairs A, B and C of an RJ45 cable, along with power for remote modules.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan other senders share a cable with the SF-TPRS12A?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. Each sending section uses all three signal pairs, so no other sending modules may be connected on the same cable.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes it power remote modules?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Local 24 Vdc power is fed to modules on all eight RJ45 jacks, each protected by a resetting fuse, up to 1.6 A total.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan multiple receivers listen to the same cable?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eFormat-A receivers use bridging inputs, allowing up to 10 receiver outputs per cable pair.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhich power supply should I use?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL recommends the \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24v3a\"\u003eRDL PS-24V3A\u003c\/a\u003e or \u003ca href=\"https:\/\/creationnetworks.net\/products\/rdl-ps-24v3\"\u003eRDL PS-24V3\u003c\/a\u003e for this chassis.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty applies?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eThis product is covered by a 7-year RDL warranty. For warranty claims, RMAs or support, contact Creation Networks at (888) 230-3661 or sales@creationnetworks.net.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan Creation Networks design the twisted pair system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Creation Networks designs, programs and commissions commercial AV systems nationwide. Call (888) 230-3661 for help with system design, quoting or installation.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025793937644,"sku":"SF-TPRS12A","price":686.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/sf-tprs12a-1.jpg?v=1793583898","url":"https:\/\/creationnetworks.net\/products\/rdl-sf-tprs12a","provider":"Creation Networks","version":"1.0","type":"link"}