DIY CD4069 state variable filter for modular synth

Here’s my simple DIY state variable filter based around the cd4069ube hex inverter CMOS chip. I’m working on other synth modules and projects, so sub to the channel if you wanna see more! Oh yeah and i forgot to mention this on the video, but the filter is also eurorack compatible! My modular is basically eurorack but with banana jacks and bigger modules. Just remember you have to wire all your input and output jacks sleeve connections to ground! I checked the tone switch caps and they are 20nF in my setup! (203) I also made a slight correction to the way the input and cv input potentiometers are wired. The updated schematic is in the dropbox link below. The schematic works fine the way it is in the video but its not good to ground the cv source when the pot is turned all the way down. The original forum thread: Schematics: Also follow me on instagram: