Optodist (Grayscale panel)

Voltage controlled vactrol distortion/overdrive with LED limiter

See http://www.muffwiggler.com/forum/viewtopic.php?t=98339 for info.

Available as pcb, front panel, kit and assembled module.

A compact, easy to use, easy to build and great sounding distortion module which will also work as a VCA if desired.

The Optodist is based on two Silonex optocouplers that gives its characterful overdriven sound and plucky dynamic response to CV, it is equally at home adding a bit of extra crisp to highs and mids or warming up your lows as it is turning a resonant filter into a howling beast or your drums into crushing carnage. The Optodist has been designed for and supplied with SR2 (no longer offered in kits/assembled) and SR3 optocouplers, the latter giving a tighter, snappier CV response and slightly less bleed. Please note that due to the nature of the vactrol-style optocouplers, response behaviour may vary between different factory batches.

Also on board is an LED based limiter circuit which limits the signal thru a set of 4 LEDs which can be seen on the panel, for adding a different flavour to your distortion, the choice of LEDs is up to you, experimenting with different types will affect the sound.

The Optodist is a novice-friendly project, it is a low part count, single-PCB build that only requires the most basic experience in PCB soldering and module assembly. Kits comes supplied with PCB, front panel (PCB material), component kit, knobs, power cable and mounting screws. Solder and tools are not supplied.

http://ljunggrenaudio.com/products.html