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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: Fisher SA-16 With Burned Resistors posted by FlaCharlie on September 22, 2016 at 22:43:08:
I have a similar Fisher console (Futua I think) amplfier, looks like the SA-16, but 7591 outputs. The power supply in the amplifier also powered the preamp and tuner. Without the preamp and tuner plugged in, some of the B+ voltages were too high. The amplifier actually played like that, but there were some resistors that were getting hotter than they should, and I didn't catch on until I subsituted 5751's for the 12ax7's and no sound. I know it was an overkill but did a SPICE simulation and found the drivers were running off the charts. I corrected it with changing some of the power supply B+ resistors.
Whatever you have to do to that amp it is probably worth it. It's close cousin is a very good sounding amp.
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Follow Ups
- RE: Fisher SA-16 With Burned Resistors - fredtr 17:32:08 09/23/16 (1)
- RE: Fisher SA-16 With Burned Resistors - FlaCharlie 23:02:07 09/23/16 (0)
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