{"product_id":"rdl-sf-np50a","title":"RDL SF-NP50A – 50 W Dante 70 V\/100 V Amplifier","description":"\u003ch2\u003eWhat is the RDL SF-NP50A?\u003c\/h2\u003e\u003cp\u003eThe RDL SF-NP50A is a SYSFLEX 50 W constant-voltage amplifier that converts a Dante network channel and an analog input to a 70 V or 100 V speaker output. Built-in automatic ducking, VCA level control and a balanced line output make it a compact zone amplifier for paging and background music. It is plenum rated per UL 2043 and includes its external power supply.\u003c\/p\u003e\u003ch2\u003eHow does it work?\u003c\/h2\u003e\u003cp\u003e\u003cimg src=\"https:\/\/rdlnet.com\/wp-content\/uploads\/2024\/01\/sf-np50a.jpg\" alt=\"RDL SF-NP50A Dante 70 V amplifier\" style=\"max-width:100%;height:auto\" loading=\"lazy\"\u003e\u003c\/p\u003e\u003cp\u003eThe amplifier delivers 50 W for a network digital audio level of 0 dBFS. An analog source can connect to the balanced terminal block input or to an unbalanced Mini-jack that sums left and right to mono. Input gain is set with a rear-panel potentiometer and a dual-LED VU meter. Either the analog or the network input can be the paging source, and an automatic detector with adjustable threshold attenuates the other input by 25 dB or mutes it, then fades it back up when the page ends. The Dante source also drives a balanced +4 dBu line output on a terminal block for feeding other amplifiers. An internal VCA sets the output level and accepts an external 10 kΩ potentiometer or 0 to 10 Vdc, so RDL remote level controls can be used. Dante sample rates of 44.1, 48, 88.2 and 96 kHz are selectable without special software. The high-efficiency Class D stage includes thermal and short-circuit protection and automatically limits supply current to prevent supply shutdown. The included supply accepts 100 to 240 Vac and provides 24 Vdc to the module.\u003c\/p\u003e\u003ch2\u003eWhat are the key features?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 W constant voltage\u003c\/strong\u003e — Drives 70 V or 100 V speaker lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDante and analog inputs\u003c\/strong\u003e — One Dante channel plus a balanced or Mini-jack analog input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic ducking\u003c\/strong\u003e — Network or analog priority with -25 dB or off attenuation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVCA level control\u003c\/strong\u003e — External 10 kΩ potentiometer or 0 to 10 Vdc control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced line output\u003c\/strong\u003e — Passes the Dante source to other equipment at +4 dBu.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlenum rated\u003c\/strong\u003e — UL 2043 rated with Class D efficiency and thermal protection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhere is it typically used?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCommercial paging and background music zones\u003c\/li\u003e\n\u003cli\u003eConference rooms and training rooms\u003c\/li\u003e\n\u003cli\u003eHouses of worship\u003c\/li\u003e\n\u003cli\u003eGovernment facilities\u003c\/li\u003e\n\u003cli\u003eRetail and hospitality spaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cdiv style=\"overflow-x:auto;-webkit-overflow-scrolling:touch\"\u003e\u003ctable border=\"1\" cellpadding=\"6\" style=\"border-collapse:collapse;width:100%;min-width:300px;table-layout:fixed;border-color:#ddd\"\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 valign=\"top\"\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4.22 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeight: 1.7 in. (4,32 cm); Width: 5.83 in. (14,8 cm); Depth: 6.45 in. (16.38 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePlenum Rating Standard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 2043\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAmbient Operating Environment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32° F to 104° F (0° C to 40° C) Maximum; 20° C Recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Requirement\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 Vdc @ 2700 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Supply (included)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 to 240 Vac, 50-60 Hz, IEC C14; Output to module: 24 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eVCA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 10 Vdc control, detachable terminal block (compatible with RDL VCA wall controls)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eIndicators (8)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFront-panel: Sync (green), Amplifier muted (yel), Rear-panel: Overload Protect (red), Ethernet Link and Speed (2), dual-LED VU meter (2), Ducking threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNoise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;-70 dB (below +4 dBu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+\/- 0.3 dB (20 Hz to 10 kHz); +\/- 2 dB (20 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eLine Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+4 dBu balanced (for -20 dBFS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNoise\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;-85 dB (below max power); \u0026lt;-75 dB (below 1\/8 power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+0\/-3 dB (50 Hz to 20 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTHD+N\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1% (1 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eReference Level (network input)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 dBFS = 50 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDucking\/Muting Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSwitch-selectable priority for network or analog input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDucking\/Muting Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSwitch-selectable for 25 dB ducking attenuation (nominal) or OFF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003ePower Amplifier Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50 W RMS (70 or 100 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDucking\/Muting Release Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 seconds, nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDucking\/Muting Actuation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAutomatic (Rear-panel adjustable signal threshold with LED indicator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eCommon mode rejection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 60 dB (50 Hz à 120 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eGain Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSingle turn audio taper (with associated Dual-LED VU Meter calibrated to 20 dB below full output power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;10 kΩ balanced, \u0026gt;5 kΩ unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eBalanced Input Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+4 dBu nominal, adjustable; -10 dBu minimum (for 20 dB below full output power); +25 dBu maximum (before clipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eUnbalanced Input Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-10 dBV nominal, adjustable; -25 dBV minimum (for 20 dB below full output power); +10 dBV maximum (before clipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" bgcolor=\"#f5f5f5\"\u003e\u003cstrong\u003eAnalog Section\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eAnalog Input Connectors (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBalanced on terminal block or stereo unbalanced Mini-Jack (L and R inputs summed to mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eBit Depth Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eInputs (2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDante network (1 channel), Analog audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" bgcolor=\"#f5f5f5\"\u003e\u003cstrong\u003eNetwork Input Section\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eDigital Audio Ethernet Protocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDante\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eNetwork Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRJ45 with Link and Speed indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eTransmission Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003cstrong\u003eSample Rates Supported\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e44.1 kHz, 48 kHz (default), 88.2 kHz, 96 kHz\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 speaker systems does the SF-NP50A drive?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003e70 V or 100 V constant-voltage speaker systems, at up to 50 W RMS.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eIs a power supply included?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. The SF-NP50A includes an external supply rated 100 to 240 Vac that provides 24 Vdc to the module.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it prioritize pages over music?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Either the analog or the Dante input can be set as priority, and the other input is attenuated by 25 dB or muted while a page is detected.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan it be installed above a ceiling?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eRDL lists the SF-NP50A as plenum rated per UL 2043. Confirm local code requirements for your installation.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eDoes it need configuration software?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eNo. RDL states special software is not required for module setup.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat warranty does the SF-NP50A carry?\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 help design and commission the system?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eYes. Our team handles networked audio design, equipment selection, installation and commissioning for commercial projects nationwide. Call (888) 230-3661 to discuss your project.\u003c\/p\u003e\u003c\/details\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":68025750716652,"sku":"SF-NP50A","price":717.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/7982\/4364\/files\/sf-np50a.jpg?v=1793583328","url":"https:\/\/creationnetworks.net\/products\/rdl-sf-np50a","provider":"Creation Networks","version":"1.0","type":"link"}