Simple 12 db low pass filter. This filter use 2 BC547 NPN transistor and a stereo 100k pot for the cutoff, instead of the pot… | Filters, Synthesizer diy, Pass
DIY SYNTH VCF Part 1: Analog Filtering Basics - YouTube
Eddy Bergman.com: Synthesizer Build part-7: THE MOOG LADDER FILTER.
STUFF - LOOK MUM NO COMPUTER
DIY SYNTH VCF Part 1: Analog Filtering Basics - YouTube
DIY Analog VC-LPF filter - YouTube
Synth DIY – Electric Druid
CGS bandpass filter - Synth DIY Wiki
Synth Schematics --::Vacuumtube Filter::--
Build An Analog Synth Filter Made EASYYYY. - YouTube
Eddy Bergman.com: Synthesizer Build part-12: THE KORG MS20 FILTER.
Minimoog VCF clone
DIY CD4069 state variable filter for modular synth - DIY STUFF - Look Mum No Computer Thingies