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One of my cousins got this back in the mid 70s after a family friend "modified" it. I have spent hours upon hours trying to find the schematic for it to no avail. Why do I need it? I don't, I suppose, but the family friend bastardized it so badly some of the wiring for the preamp output is a bit confusing. It has two instrument channels, a reverb tank in the chassis and stereo outs.
The confusing part for me is how the stereo outs are supposed to be wired with the mono-stereo switch. I could look up a generic setup and make it work but I really, really want to have the actual schematic for this since it's so hard to find info on. I was able to rebuild the separate power amp (which I believe was originally in the speaker cabinet according to what I could find online) using a Checkmate 100 schematic. The family friend had this so messed up it's easily the worst I've worked on since I started back in the mid 80s.
After refreshing and fixing the wiring on the power amp I have a working power amp that honestly doesn't sound too bad even running a cold bias. The preamp chassis was connected via mono cable with a stereo plug that plugged into the power amp. Not unusual really, right? Yeah, but this output cable was actually a Ford automobile radio antenna cable. Seriously. That's how messed up this "modification" was and was just one of many stunning discoveries.
Anyway, as I said I would really like to find this pre-amp schematic if possible just for the sake of posterity if nothing else.
The confusing part for me is how the stereo outs are supposed to be wired with the mono-stereo switch. I could look up a generic setup and make it work but I really, really want to have the actual schematic for this since it's so hard to find info on. I was able to rebuild the separate power amp (which I believe was originally in the speaker cabinet according to what I could find online) using a Checkmate 100 schematic. The family friend had this so messed up it's easily the worst I've worked on since I started back in the mid 80s.
After refreshing and fixing the wiring on the power amp I have a working power amp that honestly doesn't sound too bad even running a cold bias. The preamp chassis was connected via mono cable with a stereo plug that plugged into the power amp. Not unusual really, right? Yeah, but this output cable was actually a Ford automobile radio antenna cable. Seriously. That's how messed up this "modification" was and was just one of many stunning discoveries.
Anyway, as I said I would really like to find this pre-amp schematic if possible just for the sake of posterity if nothing else.
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