LDR-based filter with VCA

This module uses the same blackbox technique as the Shat-noir Phaser. The VCF is based on the Steiner diode VCF but this one uses LDRs rather than diodes and a CV control system to suit. The nice thing about this filter is you can feed different signals to the LP, BP & HP inputs then surf between them with your CV, quite different from regular filters. The VCA is really there to use up a spare op amp and is based on the Korg PS3100 VCA, works very well for what it is.

PCB set = USD 24
Panel = USD 22
assembled = USD 210


  • ? mA +12V
  • ? mA -12V
  • ? mA 5V

Available as an assembled Module and as a DIY project.

This Module is currently available.

$210 Price in €
10 HP FilterVCA
submitted Aug 31st 2018, 18:55 by OlivierWah | last Change Aug 13th, 13:13 by AndrewF