DIY Eurorack Builds

Serious Filter

State-variable filter ยท Nonlinear Circuits

MakerNonlinear Circuits
TypeState-variable filter
MountingThrough-hole
Width8 HP
LicenseProprietary (No licence published)
Difficulty ๐ŸŒก๏ธ Medium through-hole
Serious Filter module
Photo: Nonlinear Circuits

Clone of ARP 4023. Based on the ARP 4023 filter, with bandpass and lowpass outputs and two CV inputs. Makes a nice quadrature oscillator when it self-oscillates.

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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