
i have just done a little more testing, with a simple 3 note single pattern, 1 note on each channel, a (my left) then b (my right) and then c (both).
when channel a is playing i get full volume on the left, and can just about hear it on the right (fed back via mixing resistors)
when channel b is playing i get the oposite of above.
when channel c is playing i get the same at both side.
i have AY-3-8912a chip here, is it the same chip in the Zon-x ?
Andy
I think i must have missed the page you talk about in the PDF, i only saw each diagram with all 3 outputs tied together. my output is based on this http://hw.speccy.cz/pics/ay-interface.png but with different resistor values.