FSFX 103: Lopass Gate

FSFX 103: Lopass Gate - MU Format

The Free State FX Lopass Gate is a vactrol based VCF and/or VCA based on the Buchla 292C module. Feeding a trigger in to the CV input creates the classic bongo and percussive sounds that made the vintage circuit so sought after, and expands upon it's sonic abilities by incorporating resonance while in filter mode. We loved what Phil at Megaohm did with his resonance modifications, and with his approval we adapted his unique feedback design in to our circuit (but with a few tweaks of our own). Limited quantities. Order today.

Modes of Operation:

Filter: Resonant Voltage Controlled Lowpass Filter

Both: Classic 'Lopass Gate' Setting. Combination VCF and VCA.

Amp: Voltage Controlled Amplifier with fast on time and natural release.

Features -
Vactec VTL5C3/2 Vactrol for classic sound and response
Can be used as a VCF, VCA, or both
FM Input with Inverting Level Control
dotcom Power Header
All thru-hole PCB components (no SMD)
Shallow - module depth only 1.75"
1/4" Switchcraft Jacks


  • ? mA +15V
  • ? mA -15V
  • ? mA 5V

This Module is currently available.

$295 Price in € submitted Aug 10th 2016, 14:09 by freestatefx | last Change Nov 13th 2019, 16:50 by freestatefx
Specs are approved by the manufacturer

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