This module is based on a design from Electronotes for a "High-ripple VCF". It's basically an "animated filter". Without any modulation source, it will modulate the cutoff frequency based on the "animation level". It does this via its 3 internal very low frequency oscillators at 1.6Hz, 1.35Hz and 1Hz summed (somewhat like the LFOUR module also for sale in my Tindie shop). It also has inputs for modulating the cutoff frequency via CV and envelope. Inside, it's actually made up of 3 low-pass filters in series, each having a different fixed Q (resonance), the 1st filter having the lowest Q and the last having the highest.
The PCB is rather large and may not fit in all Eurorack cases, it's 4"x3.4".
Note: This PCB uses 6 CA3080s. If you don't have these there is an option to include them.
Schematics and docs will be provided on purchase. If you have any questions at all please let me know.uses
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I'm a software engineer, and have always been a musician and a tinkerer with electronics. Recently I decided to take up building modular synths and love it.