Hi ethan

> I have 2 A-110 VCOs and both produce very dirty sine waves. I was
> wondering if there is a way to calibrate the A-110 to produce much
> cleaner sine waves.

The A110 contains the most rough version of a often used circuit for sine
shaping. This one uses two diodes (see http://www.doepfer.de/a110_tec.htm the
part in the lower right part of the schematics.). You may enhance this circuit
with more diodes and resistors. Some theory about this can be found at:

http://www.geocities.com/SoHo/Museum/4459/circuits/sineshaper.html

The schemo from Tietze/Schenk is on
http://www.geocities.com/SoHo/Museum/4459/circuits/tzsinesh.gif

Hope this helps.

Florian
--
Florian Anwander |ConSol* HP-Support
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