DIY CD4069 state variable filter for modular synth - DIY STUFF - Look Mum No Computer Thingies
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
Synth DIY: a White Noise generator (part 2 of 2) | synthnerd
Eddy Bergman.com: Synthesizer Build part-7: THE MOOG LADDER FILTER.
Anyone have links to an ultra simple low pass filter schematic? : r/synthdiy