{"product_id":"rdl-ru-pa40de","title":"RDL RU-PA40DE","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\r\n\u003cp\u003eThe RU-PA40DE is the ideal choice in many applications where a high quality, high-efficiency utility amplifier is needed to drive a pair of 4 Ω or 8 Ω speakers. It is specifically suited to amplification applications where users need to adjust the gain. Examples include projectors or monitors with fixed audio outputs used in classrooms, boardrooms or video conferencing. The RU-PA40D is ideal for foreground sound amplification in small to medium rooms or in a specific zone within a retail space.\u003c\/p\u003e\r\n\u003cp\u003eThe RU-PA40D features two balanced line-level inputs on a detachable terminal block. Two unbalanced line level inputs are available on high-reliability gold plated phono (RCA) jacks. A front-panel gain control trimmer permits setting the maximum gain for each channel. The gain range accommodates the range of typical balanced and unbalanced audio signal levels. Each of the two RU-PA40D outputs will drive a 4 ? or 8 ? speaker or multiple speakers connected to present a 4 ? or 8 ? load to the amplifier. The output impedance is switch-selectable on the front panel of the module.\u003c\/p\u003e\r\n\u003cp\u003eThe RU-PA40D is equipped with an internal stereo VCA for setting the output level on both amplifier channels. 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. Remote control is possible using audio, control or common computer network wire.\u003c\/p\u003e\r\n\u003cp\u003eA front-panel switch is provided to sum the audio inputs to mono. In the STEREO mode, the RU-PA40D independently amplifies each audio channel, left (L) and right (R). If speaker placement in the specified installation is incompatible with stereo amplification, the INPUT MODE switch may be set to SUMMED MONO.\u003c\/p\u003e\r\n\u003cp\u003eThe RU-PA40D includes a stereo analog compressor\/limiter for audio fidelity noticeably superior to conventional class D amplifiers with digital limiting. The input GAIN settings determine whether the limiter alone is used for clipping suppression, or if the full compressor\/limiter will be used to substantially increase the average output power beyond that of a standard 40 W amplifier. A red front-panel LED flashes when the limiter is preventing output clipping. The RU-PA40D, with compression, is capable of producing average audio output levels and clarity normally expected from stereo amplifiers with a much higher output power rating.\u003c\/p\u003e\r\n\u003cp\u003eA blue POWER LED illuminates when the RU-PA40D is powered from its external 24 Vdc European power supply (included). The module is equipped with both thermal and output short-circuit protection. The high-efficiency Class D output stages produce minimal heat for all levels of expected voice or music modulation.\u003c\/p\u003e\r\n\u003ch3\u003eFeatures\u003c\/h3\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eVCA Controlled Stereo Audio Power Amplifier\u003c\/li\u003e\r\n\u003cli\u003e20 Watts RMS per Channel into 8 Ω - 40 Watts Total\u003c\/li\u003e\r\n\u003cli\u003e15 Watts RMS per Channel into 4 Ω - 30 Watts Total\u003c\/li\u003e\r\n\u003cli\u003eUnbalanced RCA Jack Inputs; Balanced Detachable Terminal Block Inputs\u003c\/li\u003e\r\n\u003cli\u003eVCA Control on Detachable Terminal Block\u003c\/li\u003e\r\n\u003cli\u003eExternal Control Using 10 KΩ Potentiometer or 0 to 10 Vdc\u003c\/li\u003e\r\n\u003cli\u003eCompatible with RDL Remote Level Controls\u003c\/li\u003e\r\n\u003cli\u003eSwitch-Selectable Stereo or Mono Operation\u003c\/li\u003e\r\n\u003cli\u003eStudio Quality, Aurally Transparent Compressor\/Limiter\u003c\/li\u003e\r\n\u003cli\u003eCompressor\/Limiter Controls Clipping\u003c\/li\u003e\r\n\u003cli\u003eCompressor Produces Maximized Average Output Power\u003c\/li\u003e\r\n\u003cli\u003eCompression Enabled Using Input Level Adjustments\u003c\/li\u003e\r\n\u003cli\u003eLED to Indicate Audio Compression Threshold\u003c\/li\u003e\r\n\u003cli\u003eHigh-Efficiency Class D Operation\u003c\/li\u003e\r\n\u003cli\u003eThermal and Short-Circuit Protection\u003c\/li\u003e\r\n\u003cli\u003eRU-PA40D includes North American Cord; RU-PA40DE excludes Power Cord\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\r\n\u003ctable class=\"table1\"\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eInputs (4)\u003c\/td\u003e\r\n\u003ctd\u003eLine level: Balanced (+4 dBu) Left and Right, Unbalanced (-10 dBV) Left and Right\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eInput Impedance\u003c\/td\u003e\r\n\u003ctd\u003e50 k? balanced, 20 k? unbalanced\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eGain Adjustments (2)\u003c\/td\u003e\r\n\u003ctd\u003eSingle turn, one per channel\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eMinimum Input Levels\u003c\/td\u003e\r\n\u003ctd\u003e-11 dBu balanced, -18 dBV unbalanced (to cross compressor threshold)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eMaximum Input Levels\u003c\/td\u003e\r\n\u003ctd\u003e+22 dBu balanced, +12 dBV unbalanced\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eVCA Control\u003c\/td\u003e\r\n\u003ctd\u003eExternal 0 to 10 Vdc (linear), 10 k? linear taper potentiometer, RDL remote controls10 Vdc VCA reference voltage output provided\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\r\n\u003ctd\u003e20 Hz to 20 kHz (± 1 dB, 4 or 8 Ohms)*\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eTHD+N\u003c\/td\u003e\r\n\u003ctd\u003e\u0026lt; 0.1% (1 kHz, 1 W, 4 or 8 Ohms); \u0026lt; 1% (50 Hz to 20 kHz,)*\u003cbr\u003e*measured at compressor threshold level equaling 12 W RMS (8 Ohms) output power\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eCompressor\u003c\/td\u003e\r\n\u003ctd\u003eThreshold nominally 2 dB below rated output, automatically adjusting attack and release times\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eCrosstalk\u003c\/td\u003e\r\n\u003ctd\u003eBetter than 60 dB (1 kHz, no compression)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eNoise (below 20 W RMS)\u003c\/td\u003e\r\n\u003ctd\u003e\u0026lt; -80 dB (VCA control 6.25V; output level 6 dB below max.) \u0026lt; -70 dB (VCA control max.)\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eSelectors (2)\u003c\/td\u003e\r\n\u003ctd\u003eSlide switches: Output Impedance 4 Ohms or 8 Ohms; Input Mode SUMMED MONO or STEREO\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eOutput Power\u003c\/td\u003e\r\n\u003ctd\u003e20 W RMS into 8 ? per channel, 40 W RMS total; 15 W RMS into 4 ? per channel, 30 W RMS total\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eOutput Circuit\u003c\/td\u003e\r\n\u003ctd\u003eClass D\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eAmbient Operating Environment\u003c\/td\u003e\r\n\u003ctd\u003e0° C to 40° C Maximum; 20° C Recommended\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eIndicators (2)\u003c\/td\u003e\r\n\u003ctd\u003eRed LED: THRESHOLD LED indicates compressor activity; Blue LED: POWER on\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003ePower Supply (included)\u003c\/td\u003e\r\n\u003ctd\u003e100 to 240 Vac, 50-60 Hz, 1.5A; 24 Vdc output to module\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003ePackage Type\u003c\/td\u003e\r\n\u003ctd\u003eCardboard Box\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003ePackage Dimensions\u003c\/td\u003e\r\n\u003ctd\u003e5.125 x 2.5 x 5.875 in.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\r\n\u003ctd\u003e2.15 lbs.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eWEEE weight\u003c\/td\u003e\r\n\u003ctd\u003e2.01 lbs.\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\r\n\u003ctd\u003eTariff code\u003c\/td\u003e\r\n\u003ctd\u003e8518.50.0000\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":43895097458731,"sku":"RDL-RU-PA40DE","price":345.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/3019\/5243\/files\/rdl-ru-pa40d-2__91042.1682443513.1280.1280.jpg?v=1775683994","url":"https:\/\/www.empirepro.com\/products\/rdl-ru-pa40de","provider":"Empire Pro","version":"1.0","type":"link"}