Vintage Synth Repair

In a message dated 8/25/05 1:10:06 AM, Jez <jezosaurus@...> writes:

<< Won't work from a Korg - Korgs are Hz per octave and Moogs are volts
per octave, so you've got the wrong control voltage coming in to the
CV.

Also, Moogs use a sort of inverse trigger, (S-Trig) so they respond to
the gate/trigger differently. >>

The Korg MonoPoly is actually the only Korg analog synth that does have 
Volt-per-octave response, unlike the others (MS-10, MS-20, etc), which hace Hz per 
volt response, so the MonoPoly and the Moog should play in tune with each 
other.  The problem quiet_channel@... is having is related to the 
Gate/Trigger.  The Korg outputs a positive-going gate, and the Moog wants to see a 
negative-going gate.  You'll need to build a simple one-transistor gate inverter 
circuit (made from one standard NPN transistor and two or three resistors).  
This circuit can be found on the web with a little bit of Google research.  It 
WILL fix the problem.

Michael Bacich