MS20-VCF clone based on BartonSynth version.
2 filters in one with a possibility to bridge them and get a band pass filter.
When using the band pass mode, signal IN on filter 1 and out on filter 2.
cutoff + resonance, with a switch to chose low pass or high pass mode.
CV control on the filter cutoff.
Self oscilation if resonance pushed to maximum, can be adjusted with 2 trimmers :
You’ll find the schematic of this module below:
Uses an SMD LM13700 because the DIP ones are not produced anymore.
Regular build, I use ceramic capacitors but you can use film/polyester.
:warning: When building modules, always do it in this order (from smallest component to highest):
For the next part, always place them without soldering them on:
Once placed, put in place the front panel, then fasten all components to it. Once this is done, you can solder them.