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Korg MS-20 filter?

1999-02-19 by Paul Schreiber

1) Does anybody own a Korg MS-20?

2) The reason I ask is that for years, it contained a "secret potted module"
that nobody knew what was inside. Err....until today!!!

It turns out that a simple, 1U wide MS-20 filter with 3 controls (Cutoff, Q,
and MOD DEPTH)
and 4 jacks (IN, OUT, 1V/OCT IN, VARIABLE IN) could be whipped up in no
time. Cost
would be $89, same as EG kit! (BTW: this is about as cheap as I can make a
kit and at
least break even).

The circuit is easy to build (a single-sided pcb is all thats needed). I
don't have a MS-20,
but lots of folks love the "Korg Twang".

Any interest???

Paul Schreiber

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