Optomix

The Optomix music synthesizer module is a two channel Low Pass Gate, providing simultaneous voltage control over amplitude and frequency content of a signal. It is in essence, a Voltage Controlled Filter Amplifier (VCFA) that has an extremely organic response to control signals. The Low Pass Gate is a classic West Coast synthesis circuit.

Revision 2 adds audio side-chain compression and expands CV generation and processing capabilities.

Specifications

• Width: 8hp

• Max Depth: 24mm

• Power:
  25mA@ +12V
  25mA @ -12V

Features

• Damp circuit updated to accept audio as well as CV allows for patching side-chain compression.

• STRIKE INput allows use of Gate signal to trigger Low Pass Gate circuit, "plucking" or "striking" the vactrol

• DAMP and STRIKE parameters combine to allow for easy programming of percussive sounds (sharp Attack w/ Voltage Controlled Decay)

• Normalization of a positive offset to the Channel inputs allows for level-shifting of CV, Envelope Generator and even subtle non-symmetrical clipping of signals

• Summing stage with an AUXiliary IN allows for chaining of multiple units creating larger mixes

• Direct coupled, process audio or control signals

• Utilizes 4 vactrols

• Pairs well with modDemix and MATHS