CGS77 - Serge Voltage Controlled Filter

This is Ken Stone's licensed adaptation of the classic Serge 1973 VCF.

This is a PCB only suitable for multiple formats

Availability: In stock




This is a licensed adaptation of the original Serge VCF

Type: State variable, 2 pole, 12dB/oct LP & HP, 6dB slopes on the BP. Does not self oscillate (see modifications below).

A little on how it works.

The circuit consists of a voltage processor, allowing the filter frequency to respond either proportionally or inverse-proportionally to the incoming CV. The output of the voltage processor is then fed to a pair of exponential converters that control the gain of the CA3080 transconuctance amplifiers in the filter core, thus varying the frequency.

Click here for the Schematic

Specs & Downloads

Specs & Downloads

manufacturer CGS
Depth No
+12V No
-12V No
+5V No
Additional Resources BOM & More Information


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