{"product_id":"rdlstvca3-voltage-controlled-amplifier-7-year-warranty","title":"Voltage Controlled Amplifier - 7 Year Warranty","description":"\u003ch4\u003eVoltage Controlled Amplifier - 7 Year Warranty\u003c\/h4\u003e\u003cp\u003eThe ST-VCA3 is a high performance voltage controlled amplifier with two inputs and one output. The line input is designed to accept an input signal with operating levels between -20 dBV and +4 dBu. The microphone input accepts low or high impedance microphones with output levels from –60 to –44 dBu. Only one of the inputs may be used at a time.\u003cbr\u003e\u003cbr\u003eA multi-turn trimmer is provided for setting the correct input gain according to the dual-LED VU meter located directly in front of the gain control. The intended output level is +4 dBu for 10 Vdc at the CTRL input terminal. The green metering LED begins illuminating at 15 dB below +4 dBu. The green LED progresses to full intensity at +4 dBu. The adjacent red LED illuminates at +4 dBu. Terminals are provided for connection of an external ramp generator (0 to 10 Vdc) or a linear taper 10 kΩ potentiometer remote control. The RDL RLC10K is most commonly used.\u003cbr\u003e\u003cbr\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 a rack or common equipment location audio level control may be extended outside the rack using an ST-VCA3.\u003cbr\u003e\u003cbr\u003eMany installations benefit from avoiding long-term wear from audio running through a 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 adjust audio levels using an ST-VCA3. The ST-VCA3 is primarily intended for line-level attenuation although 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. The ST-VCA3 operates from a 24 Vdc ground-referenced power supply.\u003cbr\u003e\u003cbr\u003eWherever it is desirable to keep audio signal sources at an equipment location while providing compact high quality remote level control the ST-VCA3 is the ideal choice. Use an ST-VCA3 and its associated remote control individually or combine them with other RDL products as part of a complete audio\/video system.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e• Audio Level Control from a DC Voltage\u003cbr\u003e• Audio Level Remote Control\u003cbr\u003e• Two Wire with Shield or Three Wire Control\u003cbr\u003e• VCA with Microphone or Line Level Input\u003cbr\u003e• VCA with Line-Level Output\u003cbr\u003e• VCA with LED Metering of Operating Level\u003cbr\u003e• 7 Year Warranty\u003c\/p\u003e\u003ctable class=\"features\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd class=\"feature\"\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 Year Warranty  \u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Radio Design Labs","offers":[{"title":"Default Title","offer_id":63661035684170,"sku":"RDLSTVCA3","price":197.49,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/6896\/1354\/files\/RDLSTVCA3-1.jpg?v=1791028182","url":"https:\/\/crystaltechgroup.myshopify.com\/products\/rdlstvca3-voltage-controlled-amplifier-7-year-warranty","provider":"Crystal Tech","version":"1.0","type":"link"}