Vactrol VCF

Maker	CATs Eurosynth
Type	Voltage controlled filter using vactrols for the cutoff control
Mounting	Through-hole
Width	4 HP
License	Proprietary (Hardware CC BY-NC-SA 4.0, noncommercial so not an open licence)
Difficulty	🌡️ Medium through-hole

Vactrol control gives the slow lagging response that makes low pass gate style plucks easy.

Documentation

• Schematic
• Fabrication files (PCBA-ready)

Links

• Source / files on GitHub
• Maker page

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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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