I just got an old Baldwin C1 Supersound amp and I was wondering if anybody has schematics for this amp. Everything works on my Baldwin amp, but it begins to distort with the volume at about "4". It doesn't get much louder beyond that point. Instead, it gets very fuzzy. The problem is not the speakers. The sound is distorted even when using another cabinet. It sounds cool and everything(reverb, trem., Supersound, etc.) works, but I understand these amps are supposed to be loud and clean.
Please, if you still have schematics, let me know. I am not a tech, but I can give it to the local amp repair-guy in my area.

Also, if you know what the cause could be let me know.