Mutant Vactrol Filter

Scott Stites Mutant Vactrol VCF

Scott Stites Mutant Vactrol Filter is the Sallen-Key structure of two Buchla Low Pass Gates (actually "not" as it turns out) with the embellishments of an expo current sink and a resonance clipper similar to that found in the Korg MS-20 filter. The result is a filter that can be sublime, organic, raucous or downright mean. At times it can be sublimly organic in its raucous mean-ness.

It has six modes of operation:

• Mode 1 - 12 dB low pass with resonance tapped from the 24 dB low pass point.
• Mode 2 - 24 dB low pass.
• Mode 3 - 12 dB High Pass with resonance tapped from the 12 dB band pass point.
• Mode 4 - 12 dB Band Pass.
• Mode 5 - 12 dB High Pass with resonance tapped from the 24 dB high pass point.
• Mode 6 - 24 dB High Pass.

Also see Scott's page here

http://L-1.su/MutantVCF.html