{"product_id":"rdl-sf-np50a","title":"RDL SF-NP50A","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe SF-NP50A is an audio power amplifier that converts one Dante network audio channel and one analog input to a 70 V or 100 V constant voltage amplified output. The output provides 50 watts for a network digital audio level of 0 dBFS. Special software is not required to configure the module.\u003c\/p\u003e\u003cp\u003eAn analog audio source may be connected to either the mono balanced terminal block input or to the unbalanced Mini-Jack which sums the left and right channels to mono. Input gain is set by the installer using a rear-panel single-turn potentiometer with an associated dual-LED VU meter calibrated to 20 dB below maximum power output.\u003c\/p\u003e\u003cp\u003eEither the analog input or the network audio input may be used as a paging source. A rear-panel switch is used to set which input has priority. That input utilizes an automatic detection circuit with an adjustable threshold indicated by an LED to attenuate by 25 dB or mute OFF the other input as set by a rear-panel switch. The attenuated input fades up to normal volume when the paging message is finished.\u003c\/p\u003e\u003cp\u003eThe Dante network audio source drives a balanced line-level output on a detachable terminal block to feed the inputs of other audio equipment or power amplifiers. The output level is +4 dBu balanced for a network level of -20 dBFS.\u003c\/p\u003e\u003cp\u003eThe SF-NP50A is equipped with an internal VCA for setting the amplifier output level. A detachable terminal block provides for the connection of an external 10 k? potentiometer or a 0 to 10 Vdc control voltage. RDL remote controls are available to provide single-turn, multi-turn (rotary encoder) or pushbutton (ramp or fixed level selection) user level control. VCA control insures long term noise-free level adjustment.\u003c\/p\u003e\u003cp\u003eThe module is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output stage produces minimal heat for all levels of expected voice or music modulation. Upon power-up and during overloads or overheating, an LED MUTE indicator glows yellow and the output is muted. Valid synchronization to the Dante network is indicated by a green LED visible from the front of the unit.\u003c\/p\u003e\u003cp\u003eThe SF-NP50A is equipped to operate from an included external 24 Vdc power supply. The SF-NP50A monitors the amplifier power and limits the current to protect the power supply from shutting down even during extreme feedback or square wave modulation conditions. A red rear-panel OVERLOAD PROTECT LED flashes when the SF-NP50A reduces power consumption to prevent shutdown of the power supply.\u003c\/p\u003e\u003cp\u003eThe SF-NP50A is constructed in a durable, professional all-metal enclosure suitable for free-standing, surface-mounted or rack-mounted operation. This full-featured SYSFLEX product is engineered and manufactured in the U.S.A for continuous duty in demanding installations. The versatility of SYSFLEX products adds enormous flexibility in the design and installation of professional A\/V systems.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e50 Watts RMS Constant Voltage Amplifier\u003c\/li\u003e\n\u003cli\u003e70 V or 100 V Output\u003c\/li\u003e\n\u003cli\u003ePlenum Rated per UL 2043 Standard\u003c\/li\u003e\n\u003cli\u003eConverts One Dante Network Audio Signal to a Mono Constant Voltage Output\u003c\/li\u003e\n\u003cli\u003eSelectable Dante Sample Rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz\u003c\/li\u003e\n\u003cli\u003e0 dBFS Input for 50 W Output\u003c\/li\u003e\n\u003cli\u003eAnalog Balanced Mono Input or Unbalanced Stereo Mini-Jack Input\u003c\/li\u003e\n\u003cli\u003eAutomatic Ducking Controlled by Network or Analog Input (Switch-Selectable)\u003c\/li\u003e\n\u003cli\u003eDucking Attenuation -25 dB or \"off\" (Switch-Selectable)\u003c\/li\u003e\n\u003cli\u003eBalanced Line Output from Network Audio Source\u003c\/li\u003e\n\u003cli\u003eAutomatically Limits Supply Current to Protect Against Power Supply Shutdown\u003c\/li\u003e\n\u003cli\u003eVCA Control on Detachable Terminal Block\u003c\/li\u003e\n\u003cli\u003eExternal Control Using 10 k? Potentiometer or 0 to 10 Vdc\u003c\/li\u003e\n\u003cli\u003eCompatible with RDL Remote Level Controls\u003c\/li\u003e\n\u003cli\u003eSpecial Software Not Required for Module Setup\u003c\/li\u003e\n\u003cli\u003eLED Indicators: Network Sync, Amplifier Mute, Analog Input Level, Ducking Threshold\u003c\/li\u003e\n\u003cli\u003eHigh-Efficiency Class D Operation\u003c\/li\u003e\n\u003cli\u003eThermal and Short-Circuit Protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable class=\"table1\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs (2)\u003c\/td\u003e\n\u003ctd\u003eDante network (1 channel), Analog audio\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eNetwork Input Section\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Connector\u003c\/td\u003e\n\u003ctd\u003eRJ45 with Link and Speed indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Audio Ethernet Protocol\u003c\/td\u003e\n\u003ctd\u003eDante\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Rate\u003c\/td\u003e\n\u003ctd\u003e100 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Rates Supported\u003c\/td\u003e\n\u003ctd\u003e44.1 kHz, 48 kHz (default), 88.2 kHz, 96 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBit Depth Supported\u003c\/td\u003e\n\u003ctd\u003e24 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e\u003cstrong\u003eAnalog Section\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Input Connectors (2)\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\u003eBalanced Input Level\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\u003eUnbalanced Input Level\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\n\u003ctd\u003eGain Adjustment\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\u003eInput Impedance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;10 k? balanced, \u0026gt;5 k? unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon mode rejection\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\u003eDucking\/Muting Actuation\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\u003eDucking\/Muting Release Delay\u003c\/td\u003e\n\u003ctd\u003e4 seconds, nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDucking\/Muting Source\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\u003eDucking\/Muting Level\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\u003eReference Level (network input)\u003c\/td\u003e\n\u003ctd\u003e0 dBFS = 50 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Amplifier Output\u003c\/td\u003e\n\u003ctd\u003e50 W RMS (70 or 100 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\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\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1% (1 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\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\u003eLine Output\u003c\/td\u003e\n\u003ctd\u003e+4 dBu balanced (for -20 dBFS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\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\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;-70 dB (below +4 dBu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndicators (8)\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\u003eVCA\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\u003eAmbient Operating Environment\u003c\/td\u003e\n\u003ctd\u003e0° C to 40° C Maximum; 20° C Recommended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e24 Vdc @ 2700 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply (included)\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\u003ePlenum Rating Standard\u003c\/td\u003e\n\u003ctd\u003eUL 2043\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\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\u003ePackage Type\u003c\/td\u003e\n\u003ctd\u003eCardboard Box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd\u003e10 x 7 x 2.25 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e4.22 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEEE weight\u003c\/td\u003e\n\u003ctd\u003e3.82 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff code\u003c\/td\u003e\n\u003ctd\u003e8518.50.0000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":43895099883563,"sku":"RDL-SF-NP50A","price":674.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/3019\/5243\/files\/rdl-sf-np50a-2__30426.1682436067.1280.1280.jpg?v=1775684007","url":"https:\/\/www.empirepro.com\/products\/rdl-sf-np50a","provider":"Empire Pro","version":"1.0","type":"link"}