What is it?

This is the pre-release PCB of the forthcoming SMT/Eurorack version of the classic Sound Lab Mini-Synth, originally designed by Ray Wilson from Music From Outer Space.

The PCB can be mounted in a Eurorack format (3U) and is 33 or 34 HP wide.

Attention: this is a PCB only. No component, no front panel provided.

This conversion requires NO WIRING at all!

SLMS is composed of two VCO (Saw and Saw+PWM), one Envelope Generator (AR, re trig-able), one LFO, one VCF, one VCA and one Noise source. All the elements are internally routed. LFO and AR Envelope can modulate (On/Off) all the other elements.

The SMT conversion respects the original design. The circuit is 100% identical. Even the component references match, so that you can follow Ray's original documentation. The only differences are the SMT components instead of THT, a new PCB layout and a power supply interface for Eurorack compatibility (+12/-12 Volts).

You can check my own documentation with build instructions here.

I offer a 33HP 3mm MDF wood Front panel. It's laser cut and etched. Fits perfectly.

You can also check Modular Audio Devices for a nice PCB Front Panel