{"product_id":"rdl-st-vca3","title":"RDL ST-VCA3","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThe ST-VCA3 is used in applications requiring smooth audio level control from a remote control panel, potentiometer or dc voltage (0 to 10 V). Installation in series with the audio input of a power amplifier allows remote control of that amplifier's level. For installations where it is preferred to keep the audio localized in the rack, audio controls are extended outside the rack from the ST-VCA3. Many installations benefit from avoiding long-term potentiometer wear from audio running through the potentiometer. An ST-VCA3 with external dc control provides virtual immunity from scratchy audio. Audio\/video system control units often provide 0 to 10 Vdc control outputs that can directly control audio levels using an ST-VCA3. The ST-VCA3 is primarily intended for line-level attenuation; a high quality utility microphone preamplifier is included in the module. If remote control of a microphone preamplifier is desired, such as a wall mounted level control for a microphone jack, the ST-VCA3 may serve as a remote controlled microphone preamplifier.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAudio Level Control from a DC Voltage\u003c\/li\u003e\n\u003cli\u003eAudio Level Remote Control\u003c\/li\u003e\n\u003cli\u003eTwo Wire with Shield or Three Wire Control\u003c\/li\u003e\n\u003cli\u003eVCA with Microphone or Line Level Input\u003c\/li\u003e\n\u003cli\u003eVCA with Line-Level Output\u003c\/li\u003e\n\u003cli\u003eVCA with LED Metering of Operating Level\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\u003eMic: 200 ? balanced; 5 k? unbalanced\u003cbr\u003eLine: 30 k? bal. bridging or unbalanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Levels (for +4 dBu output)\u003c\/td\u003e\n\u003ctd\u003eMic: ?44 dBu to ?60 dBu (150 ? source)\u003cbr\u003eLine: -18 dBu (-20 dBV) to +4 dBu\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal (normal rated)\u003c\/td\u003e\n\u003ctd\u003e+4 dBu, 150 ? balanced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadroom\u003c\/td\u003e\n\u003ctd\u003e18 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD+N\u003c\/td\u003e\n\u003ctd\u003eMic: \u0026lt; 0.05%; Line: \u0026lt;0.025% (unity gain);\u003cbr\u003e0.025% typical at 15 dB attenuation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003eMic: 30 Hz to 20 kHz (±1 dB)\u003cbr\u003eLine: 10 Hz to 20 kHz (±0.1 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003eMic: \u0026lt; -71 dB below +4 dBu output (150 ? source; 50 dB gain) \u003cbr\u003eLine: \u0026lt;-78 dB below +4 dBu output (maximum gain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCMRR\u003c\/td\u003e\n\u003ctd\u003eMic: \u0026gt; 60 dB; Line: \u0026gt; 60 dB, (50 Hz to 120 Hz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Input\u003c\/td\u003e\n\u003ctd\u003e0 to 10 Vdc or 0 to 10 k? Linear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAttenuation Range\u003c\/td\u003e\n\u003ctd\u003e0 to 90 dB (\u0026gt;90 dB at 0 Vdc control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Operating Environment\u003c\/td\u003e\n\u003ctd\u003e0° C to 55° C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003eGROUND-REFERENCED, 24 Vdc @ 50 mA \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eHeight: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 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\u003e2 x 2 x 4 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e0.2 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWEEE weight\u003c\/td\u003e\n\u003ctd\u003e0.145 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff code\u003c\/td\u003e\n\u003ctd\u003e8518.40.2000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"RDL","offers":[{"title":"Default Title","offer_id":43895108403243,"sku":"RDL-ST-VCA3","price":167.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0642\/3019\/5243\/files\/rdl-st-vca3-3__24952.1682443543.1280.1280.jpg?v=1775684047","url":"https:\/\/www.empirepro.com\/products\/rdl-st-vca3","provider":"Empire Pro","version":"1.0","type":"link"}