DIY Eurorack Builds

Moduleur Sidechain Mixer

4 channel DC coupled mixer with VCA sidechain compressor · Shmoergh

MakerShmoergh
Type4 channel DC coupled mixer with VCA sidechain compressor
MountingMixed
Width
LicenseProprietary (CC BY-NC, noncommercial so not an open licence)
Difficulty 🔥 SMD (0805)

Channel 4 doubles as the control input for a VCA based compressor acting on the output mix, and can be muted from the mix while still driving the compressor. Its gain control lifts line level sources up to Eurorack level. Part of the Shmoergh Moduleur, a full DIY analog synth whose modules also work standalone in any Eurorack case. Split into a core PCB and a UI PCB; the core is mostly 0603 chip parts with JLCPCB gerbers and pick-and-place files, so the surface mount side can be fab assembled.

Documentation

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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