[sdiy] drifty ssm2033 and CV compatibilities

[Bob Weigel]

As I mentioned I'm trying to get the Mono/poly to drive the ARP2600 
here.  It works GREAT in terms of the CV out.  I probably need to build 
a trigger to gate converter with a 555.  One where I can program even a 
randomness into the gate width maybe.  Sound cool?  Probably something 
out there already but a fun project.  Anyway I was wondering though...if 
there is a table somewhere that has most of the data.  I'd write it into 
my feature comparison table on my sounddoctorin.com/synthtec/synth.htm 
page.

Anyway the tuning stability...I got some other chips from Cynthia a 
while back and tried one.  Doesn't seem to have improved things.  I'm 
wondering if it was something else.  First time I've dealt with this 
issue really.  The chip heating resistors...the one on that chip 
measured lower by 10 ohms (474ohm pretty much on the other three which 
have been SOLID PERFORMERS...) So I pulled it out and it was brown in 
the middle from heat.  Replaced it with a precision 470 that measured a 
little low and a series 6.8ohm to make up the difference and got them 
all in contact on the top of the chip and used rv goop over them. Seemed 
ok on the bench..drifts when I get it back in place.  uh boy.

I'm wondering if something else isn't bad there.  Does anyone have a 
better print of the diagram?  The one off Korg stinks.  I'm suspecting 
something else is causign this.  Looksl ike we're pulling the board for 
the third time.  arghhh.   sounded..so.... good...on the bench.  After 
much warm up.-Bob

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