Studio Electronics Boomstar Modular System VCA2 Module

Studio Electronics VCA2 offers two quality VCAs for audio or CV with level control, advantageous for creating a CV modulation chain. Patch the first (controlling) modulator into the CV input, and the second and third (controlled) modulators into inputs A and B; the output can then be patched to a modulation destination such as an oscillator or filter frequency. The same approach is effective for 'enveloping' an LFO, or dynamically modulating an LFO or envelope with key velocity, modwheel, key tracking, etc.

Originally set at unity gain, VCA2 has since been tweaked such that greater marking will exceed unity and clip the op-amp past 3:00 on the dial. Upshot: Fully clockwise the gain is doubled. Distortion of audio and modulation signals never hurt anyone, and add another tool to the box. Note: in the audio realm, clipping may occur sooner dependent upon signal input level.

• Module controls
• LEVEL knobs: level/mix adjustment.
• Patch points
• CV inputs: controlling CV modulation input.
• IN inputs: inputs for signals to be controlled.
• OUT outputs: output.
• Physical specifications
• Size: 6hp
• Module depth: 25mm (with ribbon cable attached)
• Power usage: 5mA @ +12V, 4mA @ -12V