[sdiy] Schematic Wanted: Korg KOT 401 Octave V

[WeAreAs1 at aol.com]

In a message dated 11/21/01 7:39:22 PM, 8brain at spiritone.com writes:

<< Looking for a schemo for this Korg module.  Was part of the KME-40X series.
This module simultaneusly divides the input signal by 2, 1.5, 1 octaves
down, adds 1 octave up, all have sliders for mix level, plus  separate
distortion sliders for every ratio, plus a noise gate.

I'll pay money for copies.  I see two LM13700s, a SIPP 4558 and some other
unidentifiable SIPPs Want to know how this crazy thing works. Does Korg
still have schematics this old?

Thanks,

Romeo >>

Hey Romeo,

I just might have that schematic.  I do have a service manual for most of the 
modules in that series, but I don't remember if that one was in that book 
(for instance, I know that the book did not include the "Waveshaper" module, 
much to my disappointment).  I'm busy with a lot of family stuff right now, 
but by Saturday I'll probably have a chance to look for it.  If it's in 
there, I'll scan it for you.  I'll also let you know if it turns out that 
it's not in the book.

Best regards,
Michael Bacich

P.S. - I can't imagine how they got those low octaves with just the LM13700's 
and an opamp!  There must be some flip-flops on there, if not IC's, then 
maybe in the form of some discrete flip-flop circuits.  A divide-by-2 
flip-flop can be made with just two transistors.