The Synthacon VCF was designed by Ken Stone. Schematics, PCBs etc can be found at his site.

This filter is really, really good. I haven't had a lot of chances to play with analog synthesizers since they've allways been to expensive for me, hence building my own. But! The synthacon VCF sounds fatter then anything i can recall, this is a definite must-have.

The synthacon is cheap to build and not too complex, i've done several breadboard attempts which have all succeeded.

For the ARS2 it was convenient to have a LP, BP, HP switch. The following is a small add-on i did for the synthacon to allow for this with a SP3T with NC in the middle:

A breadboard layout for the Synthacon VCF can be downloaded below, both in .gif format and PCB Express .pcb format. Please direct any questions regarding this

to me

and not to Ken Stone.

>>Synthacon VCF BB-layout (GIF format)
>>Synthacon VCF BB-layout (PCB format)