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Blue Lantern
LM4250 Sour VCF 2016 Re-release - 6HP

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Item: N13-5207

Availability: In stock

LM4250 Sour VCF 2016 Re-release - 6HP


The Blue Lantern LM4250 Sour VCF is an analog filter based around the classic polivoks vcf. This particular design uses the programmable LM4250 IC op amp for its filtering. It features some additional circuits not found on the original Polivoks. The brite and dark switch is one of these features. It allows users to create some decimator sounding timbres. There is also a diode limiter which allows the user to explore extremely high resonance settings. This is also selected via a switch.


  • Based on the classic Polivoks VCF
  • Brite and Dark switch 
  • Diode limiter allowing for extreme resonance 
  • Controls for Cutoff, Rez, Bi-polar FM modulation, and Audio Input level
  • (2) CV direct inputs
  • FM input
  • Audio input
  • Low pass filter output 
  • band Pass filter output

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  • width:6hp
  • current: 9mA, -9mA
  • depth: 1.5 inches

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