DIY kits

DIY Polivoks VCF II

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Polivoks VCF is famous for its’ crazy resonance sweeps and deep, bassy sounds that make it ideal for acid basslines.



  • Switchable BP/LP modes
  • Inputs/outputs are protected against over-voltage
  • Protection on reversed power supply
  • Skiff friendly design


We believe that this is one of the most authentic sounding emulations of the famous Russian synth Polivoks VCF that are available out there. The original Russian ICs K140UD12 are used in the sound circuit, but we also did several updates to adapt the VCF for contemporary modular synth demands. Independently buffered inputs, extended Cutoff knob range, eliminated clicks, when switching filter modes, and output stage added to eliminate signal inversion. 

Technical specifications:

Input levelup to 20Vptp
CV input level-10V - +10V
Filter modesBP(6dB/oct)/LP(12dB/oct)
Module width10HP
Module depth30mm
Power consumption 11mA@+12V, 11mA@-12V

For those who purchasing partial kits know that sizes are:  
Small Knobs 19 mm 
Medium Knobs 24 mm 
Large Knobs 28 mm

Disclaimer: Please, if you have any questions on missing parts or similar issues, contact us within 1 month after receiving the kit!  

Erica Synths DIY Polivoks VCF on Modulargrid

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