[sdiy] To 1/4" or not to 1/4"

[Mark Rivera]

> a VCA needs 0-10V but your VCO puts out +/-10V. How do you make that work?

As an example, in a Synthesizers.com system, you'd use a Signal 
Processor module.

http://synthesizers.com/q125l.jpg

Top knob would be set to 50% to make it +/- 5V. Then Offset knob would 
shift +5V so that +/-5V becomes 0 to 10V.


Here's a circuit that does that...

http://musicfromouterspace.com/analogsynth/oddsandends.html#LEVELSHIFTER


Mark