'57 Guild Model 66-J........
- Thread starter 59Panhead
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59Panhead
Junior Member
Thank you for posting.
The PDF is a very high resolution of the plot, and is available to whomever may run into this configuration.
Jack
The PDF is a very high resolution of the plot, and is available to whomever may run into this configuration.
Jack
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Jack, what's up with the OT leads to the speaker jacks? If you plugged speaker into both, wouldn't you get phase cancellation?
59Panhead
Junior Member
The amp is non-working, and I really don't know what's going on with those. When I replace the OT, I will jumper the tip connectors together, and tie them to a 4 ohm tap. The barrel connector will tie to the secondary common.
The existing OT has 4 taps, one of them being taped back, and 2 of them tying to the jacks. The 4th being the common (I assume). I haven't ohmed the secondary out, so I don't know those specs. I emailed the manufacturer with the transformer part number, and they replied that they no longer make audio transformers. Nor do they have any specs, which would have been just fine with me.
Jack
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Who was the manufacturer?
59Panhead
Junior Member
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Thanks!
- Joined
- Jul 30, 2007
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- 13,648
- Reaction score
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- Philly, or thereabouts
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- 11
From the Univox page, a Uni amp with a 12au7 and half of a 12ax7 in the tremolo.
59Panhead
Junior Member
Thanks, Steve. Notice how the 12AU7 has the triodes flipped. And, no apparent connection to the second grid. Plus, where is the B+ for that tube? I'll study this later. Thanks, again, for posting.
Jack
Jack
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What I would guess is that the grids are tied together?
This feller makes custom amp handles.
http://www.brookwoodleather.com/amp_handles
59Panhead
Junior Member
Thanks for the link. I have it bookmarked.
Jack
Jack
59Panhead
Junior Member
It's been a while since I've been into this amp. But, some projects have cleared the bench, and I'm thinking that I need to open this one up for a permanent fix.
Plus, I have now located a fellow who will rewind my original OT, so I don't have to look for a replacement, of another brand. I will send him this one, along with a couple old Ampeg potted PT's that I couldn't bring myself throw them away. Those approach $300.00 for a new exact replacement.
Anyway, when the OT has been rewound, I'll get it back in and report back with the results. I'm hoping that it sounds as nice as it looks.
Jack
Plus, I have now located a fellow who will rewind my original OT, so I don't have to look for a replacement, of another brand. I will send him this one, along with a couple old Ampeg potted PT's that I couldn't bring myself throw them away. Those approach $300.00 for a new exact replacement.
Anyway, when the OT has been rewound, I'll get it back in and report back with the results. I'm hoping that it sounds as nice as it looks.
Jack