[sdiy] additional trigger outs on a tr-606?

[Julian]

Hi there,

Im keen on adding additional trigger outputs to my 606, for each voice, and ideally the accent too.  At the moment, it just has the
standard toms outs.

Ive heard that the analogue solutions method of doing this (not that i know what that method is) has some issues, in that, if all
the triggers hit at the same time, the drain out through the triggers is enough to affect the other circuits on the 606.

In order to avoid this, so far as i see, a simple transistor to buffer the output is no problem.

But, im stuck on reading the schematics as to where i should take the signal from in order to open my transistor.  Looking at the
schematic, i see a lot of lines coming in on the left, which i assume are lines from the cpu.  And then over in the top right hand
corner, i see additional circuitry for the toms, using IC11 (AN6912), which i believe is a quad voltage comparator.  And then im
wondering what this is up to....


Any assistance, as usual, would be greatly appreciated.

Cheers, Julian