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DC-coupling MOTM120

2007-02-10 by gregorykjar

Hi

Recently I got the 120 sub mux and this is a nice module for a lot of things. But the other 
night I tried to feed it 2 LFO squares and then feed the output of the 120 to the 1V/oct input 
of my 300 VCO. Interesting patterns. But it wasn�t a stepped sequence as I expected and it 
turns out the 120 is AC coupled. (you don�t get sustained notes, but note glitches) I know 
Paul has made the AC coupling with a reason but would it be possible to bypass the AC 
coupling capacitor? As far as I can see from the schematic its only C7 between the summing 
opamp and the output opamp. Would such a DC coupling cause instability, DC-drift etc. The 
DC coupling could make all kind of nice selfgenerating sequences. (and it would be easy to 
make a switch to switch between the two modes). Whats do you say Paul (or anybody) can I 
do this without harming the circuits? Or would I get problems. A little bit of DC-offset wouldn
�t be a problem.

Greetings from Denmark

Gregory

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