[sdiy] Korg MS-10 Filter Recreation? (Got Korg IC35 ?)

[Cynthia Webster]

Howdy All!

I'm curious if anyone has done a recreation of the Korg MS-10 filter?

Apparently it is not simply the low pass half of the filter
from the Korg MS-20, (~which~ version of the MS-20! there are several).

Anyone out there have a PCB layout for the MS-10 Filter?
or know where the Korg IC35 or IC-35 chips specified in the schematic can be
found?

Here's a schemo if anyone is interested

http://www.synthdiy.com/files/1/200357/ms10cct.gif

The whole synth is on one fairly compact board and there's a lot going on
it looks like some real work to extract just the VCF section here.


Someone has inquired about my making them a duplicate of this favorite
filter and I know very little about this machine.

I *think* this is from back when the control voltages on Korgs were all
linear and not exponential Can anyone plese verify this?

Thanks!

Cynthia

(Note: MS-10 is not to be confused with the Vocoder version called the
VC-10)