Modular synthesis intro, part 8: State-variable filters - North Coast Synthesis Ltd.
Eddy Bergman.com: Synthesizer Build part-7: THE MOOG LADDER FILTER.
Synth DIY: a White Noise generator (part 2 of 2) | synthnerd
Eddy Bergman.com: Synthesizer Build part-12: THE KORG MS20 FILTER.
Eddy Bergman.com: Synthesizer Build part-26: STEINER-PARKER VCF (Yusynth Design).
roland_filter_versions
The Classic Sound of the Moog Ladder Filter | Universal Audio
Ken Stone's Modular Synthesizer
Further With Filters
Synth schematics--::-- SSM 2040 Filter
Analog Synthesizer Filter using one opamp | Elektor Magazine
DIY SYNTH VCF Part 2: Active Filters & Resonance - YouTube
Minimoog VCF clone
Simple Variable High Pass Filter – Improvements : r/synthdiy
Moog High Pass filter schematic : r/synthdiy
Synth schematics - WASP Filter
Synth schematics--::-- MS 20 Filter
Synth-DIY Experimenter Board Voltage Controlled Filters
Kassutronics: KS-20 Filter
SSM2044 LP Filter designs – Electric Druid
DIRT Filter Schematic | Synthrotek
Voltage Controlled State Variable Filter Schematic
Synth DIY: a White Noise generator (part 2 of 2) | synthnerd
electro-music.com :: View topic - Just another Transistor Ladder Filter
9V powered Korg MS-20 filter | DIY Music & ...
SSM2044 LP Filter designs – Electric Druid
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