Welcome To the Hoffman Amplifiers ForumApril 24, 2026, 04:50:09 pm | ||
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5E7 low volume... numbers posted...
Started by Geezer |
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4815 Views |
by Geezer |
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4151 Views |
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8 pin tube socket adapter ?
Started by Geezer |
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4372 Views |
by Geezer |
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DC stand off heaters?
Started by Geezer |
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4640 Views |
by Geezer |
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Fender Deluxe P/T Wiring
Started by Geezer |
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4244 Views |
by Geezer |
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Add Effects loop to Doug's AB763 board
Started by Geezer |
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5038 Views |
by Geezer |
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What is the purpose of a cathode follower?
Started by Geezer |
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5529 Views |
by Geezer |
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Aluminum Chassis
Started by Geezer |
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6126 Views |
by Geezer |
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help please
Started by Geezer |
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4513 Views |
by Geezer |
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speaker magnet - power tube distance
Started by Geezer |
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4192 Views |
by Geezer |
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speaker impedances affecting tone?
Started by Geezer |
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4490 Views |
by Geezer |
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BF Showman 6v6's conversion?
Started by Geezer |
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5178 Views |
by Geezer |
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can't get the bias negative enough
Started by Geezer |
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4618 Views |
by Geezer |
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4284 Views |
by Geezer |
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Extension speaker jack wiring
Started by Geezer |
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5061 Views |
by Geezer |
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Microphonic output tubes?
Started by Geezer |
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4433 Views |
by Geezer |
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Blonde Bassman Power Sag.
Started by Geezer |
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5112 Views |
by Geezer |
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Power transformer interference
Started by Geezer |
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4768 Views |
by Geezer |
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PI questions.....
Started by Geezer |
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4197 Views |
by Geezer |
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0 Replies
4482 Views |
by Geezer |
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Heater max voltage
Started by Geezer |
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4737 Views |
by Geezer |
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0 Replies
4589 Views |
by Geezer |
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Groove Tube Substitube?
Started by Geezer |
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5089 Views |
by Geezer |
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About preamp gain
Started by Geezer |
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4699 Views |
by Geezer |
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hum resolved
Started by Geezer |
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5233 Views |
by Geezer |
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old orange drops
Started by Geezer |
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5998 Views |
by Geezer |
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Pin voltages for 100 watt Plexi &nbs
Started by Geezer |
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6429 Views |
by Geezer |
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OT that Doug used to sell
Started by Geezer |
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4779 Views |
by Geezer |
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Inconsistent/ up and down B+
Started by Geezer |
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5089 Views |
by Geezer |
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0 Replies
5216 Views |
by Geezer |
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Master volume in a Princeton aa964
Started by Geezer |
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6228 Views |
by Geezer |
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oscillation/snubbers&PI
Started by Geezer |
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4820 Views |
by Geezer |
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Output Transformer 1750 ohms
Started by Geezer |
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4658 Views |
by Geezer |
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regulated DC heater circuit
Started by Geezer |
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5318 Views |
by Geezer |
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The need for Heat
Started by Geezer |
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4794 Views |
by Geezer |
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Preffered Bias Method
Started by Geezer |
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5406 Views |
by Geezer |
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Bassman 6L6 to EL34 conversion...
Started by Geezer |
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8525 Views |
by Geezer |
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5E3 Hum and transformer mounting
Started by Geezer |
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5932 Views |
by Geezer |
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5745 Views |
by Geezer |
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Revibe Tank Impedance Tweak?
Started by Geezer |
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5012 Views |
by Geezer |
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Checking a cap can/anyone use the JJ?
Started by Geezer |
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5910 Views |
by Geezer |
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5146 Views |
by Geezer |
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tube question
Started by Geezer |
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5252 Views |
by Geezer |
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Output transformer troubleshooting
Started by Geezer |
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7270 Views |
by Geezer |
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5E8A vs. 5F6A
Started by Geezer |
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7842 Views |
by Geezer |
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Home Brew Fender PS 400
Started by Geezer |
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6844 Views |
by Geezer |
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Fender Bassman 100 chassis layout
Started by Geezer |
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7185 Views |
by Geezer |
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0 Replies
4838 Views |
by Geezer |
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What causes hum ?
Started by Geezer |
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5196 Views |
by Geezer |
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grid stoppers?
Started by Geezer |
0 Replies
5485 Views |
by Geezer |
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