DIY Eurorack Builds

Double Penetration (DP) Filter

Dual opto ladder filter ยท Nonlinear Circuits

MakerNonlinear Circuits
TypeDual opto ladder filter
MountingThrough-hole
Width12 HP
LicenseProprietary (No licence published)
Difficulty ๐ŸŒก๏ธ Medium through-hole
Double Penetration (DP) Filter module
Photo: Nonlinear Circuits

Crosses the Moog ladder and EMS diode ladder filters, replacing their diodes and transistors with opto-isolators. Audio from the diode ladder is passed across as infra-red.

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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