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

The Old Crow oldcrow at oldcrows.net
Sat Aug 16 06:15:40 CEST 2003


  I believe the Korg35 IC internal configuration was provided on request 
to someone a few years back (JH, perhaps?)  The MS-10 filter itself is 
just the circuit section between test point 7 and test point 10 in the 
schematic you indicated.  (Between points 10 & 12 is Korg's famous 
"cheapest VCA in the universe", which consists of: TR9 (OK, and a few 
biasing resistors).  The control feedthrough is atrocious. ;)

  Googling for "korg35", I found the info here:

http://www.geocities.com/SoHo/Museum/4459/circuits/korg2.gif
http://www.geocities.com/SoHo/Museum/4459/circuits/korgsch2b.gif

  No idea who this site belongs to, probably someone on this list.
  Only caveat is Korg says not to make money from the information.

Crow
/**/

On Fri, 15 Aug 2003, Cynthia Webster wrote:

> 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?



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