by gzifcak » Mon Jan 29, 2007 4:49 pm
overdrive:
basically, i used an audio taper pot, with the input to the filter connected to the middle lug, the output of the oscillator (switchable with the filter input jack) connected to one outside lug, and the other outside lug connected to ground. the pot value doesn't really matter too much. the input of the filter also has the original resistor swapped, just like the version talked about here, to allow for overdrive when the pot is fully clockwise. in fact i think it starts overdriving at about 9 or 10 o'clock when fed by the internal oscillator.
accent decay:
i believe the resistor is r138. replacing it with a pot (and a small resistor in series is nice) gives you control over accent decay time, as well as the minimum env decay time. i saw a reference somewhere to another resistor that would change accent decay alone, but i'm not sure how.