6 HP
41 mm deep
Current Draw
? mA +12V
? mA -12V
? mA 5V
$20 Price in €

Module is available as a DIY project only.

This Module is currently available.

Specs are approved by the manufacturer

VCF based on classic CEM 3320


Use this PCB and front panel to build your own FOUR-POLE VOLTAGE CONTROLLED FILTER using the classic CEM3320 filter chip from Curtis Electromusic Specialties or the new AS3320 from Alfa. The CEM3320/AS3320 is a self contained voltage-controlled four-pole filter with voltage-controllable resonance. It has an exponential (V/Oct) frequency control input which can cover more than ten octaves. The filter chip is temperature compensated.

The CEM 3320 was used in classic synths such as the Sequential Prophet 5.

Read more about the CEM3320 and AS3320 and even purchase your filter chip there.

  • Four pole VCF low pass filter
  • Exponential 1V/octave response
  • Exponential voltage control of resonance
  • Two frequency CV inputs
  • Q CV input
  • Input level control for smooth or overdriven sounds
  • Board accepts DIP18 packages and sockets.
  • 6HP Eurorack with our panel

This is a low component count project and an easy build so you can have high quality VCFs in your rack with minimum time and expense.

You can purchase the AS3320 from various sources including Cabin Tech and Electric Druid

This module will fit perfectly into a 6HP Eurorack space.

Comprehensive manuals, parts lists and component shopping carts are provided in the documentation link for building, testing and using the module.


submitted Sep 27th 2020, 22:40 by jnfrench | last Change Oct 1st 2020, 20:07 by jnfrench