- Audio Level Control from a DC Voltage
- Audio Level Remote Control
- TwoWire with Shield or ThreeWire Control
- Audio Level Control from a DC Voltage
- Audio Level Remote Control
- TwoWire with Shield or ThreeWire Control
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- Audio Level Remote Control
- TwoWire with Shield or ThreeWire Control

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Product Overview
The 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.
Main Features
- Audio Level Control from a DC Voltage
- Audio Level Remote Control
- TwoWire with Shield or ThreeWire Control
- VCA with Microphone or Line Level Input
- VCA with Line-Level Output
- VCA with LED Metering of Operating Level
General Information
Specifications
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ADI Part Number RL-STVCA3 Brand Name Radio Design Labs Manufacturer Radio Design Labs, Inc Manufacturer Part Number ST-VCA3 Product Line Stick-On Product Model ST-VCA3 Product Name ST-VCA3 Voltage Controlled Amplifier Product Type Amplifier
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Maximum Frequency Response 20 kHz Minimum Frequency Response 10 Hz RMS Output Power 10W
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TAA Compliant No
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Color Black Depth 1.6" Height 0.7" Width 3"
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Input Voltage 24V DC
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Limited Warranty 3-Year
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Country of Origin US Environmentally Friendly Yes