[sdiy] altering designs for paia 4700

[rkmoore at memphis.edu]

Hello everyone,

Thanks a lot for the responses I got to a post about the large paia 
4700/2700/8700 I got my hands on several months back.  The manuals 
from anders sponton's site have been extremely valuable in trouble 
shooting and repairing the analog and digital circuits in the 
4700/8700.  

Now I'm wanting to add some different modules (namely a moog style 
filter, SSM filter, better LFO's), but there are a few issues.  All of 
this stuff runs off of -9/gnd/+9/+18 DC.  It seems like all of the 
stuff I find posted on DIY sites is +/-15 or +/-12.  I have a couple 
of extra paia power supplies and would prefer to use them if I can.  
Also, I think that the CV's in the paia are 0 to 5V instead of 0 to 
10V.  Can I easily modify these designs to work with the power 
supplies that I have?  

In the end it may be better for me to go ahead and build a +/- 15V 
supply and get a FracRak or something to hold new modules.  Opinions 
and advice will be greatly appreciated.

-Richard Moore