Hi All,
I've finished my build, and I am getting proper volume out of the individual voice outs, but the master volume is really low. I notice that the volume actually increases when I turn *down* VR28, which reaches a peak amplitude at about 10 o clock. There are also scratchy sounds around this area of twisting the pot. Continuity with the IO board is OK. Anyone have any ideas of what might be wrong with my master output?
Low Master Volume
wrong pot or opamp, or bad location for some resistor