Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 10:43:49 am | ||
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0 Replies
1823 Views |
by marshallguy |
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KT90EH biasing discrepancy
Started by marshallguy |
5 Replies
2973 Views |
by marshallguy |
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Marshall DSL 20R
Started by luthiernc |
0 Replies
2029 Views |
by luthiernc |
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13 Replies
3752 Views |
by PRR |
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Parallel triode Rg values
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3 Replies
2161 Views |
by Esquirefreak |
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8 Replies
3957 Views |
by tubeswell |
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Vox AC-15 Vibrato channel low volume
Started by sluckey |
8 Replies
3623 Views |
by sluckey |
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8 Replies
3266 Views |
by fossilshark |
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Bias Calculations for Cathode bias??
Started by Jalmeida |
10 Replies
4164 Views |
by Lectroid |
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30ish watt bass amp
Started by Beezerboy |
16 Replies
4408 Views |
by Lectroid |
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28 Replies
6084 Views |
by jeff |
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11 Replies
3258 Views |
by mresistor |
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11 Replies
3433 Views |
by dude |
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Gretsch Playboy 6156T No Schematic Found
Started by plexi50 |
12 Replies
3926 Views |
by plexi50 |
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pre-made fwb rectifiers
Started by joesatch |
11 Replies
3519 Views |
by thetragichero |
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5 Replies
2865 Views |
by Porpoise Head |
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1964 Vibroverb
Started by Rockranger |
9 Replies
3284 Views |
by Rockranger |
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Effects Loop Questions
Started by Rontone |
6 Replies
3587 Views |
by Rontone |
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Nolan 50w Multi Purpose Amp Repair
Started by Rontone |
7 Replies
3555 Views |
by Rontone |
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Traynor YVM-1 much needed repair
Started by fossilshark |
11 Replies
3680 Views |
by sluckey |
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13 Replies
4230 Views |
by p2pAmps |
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8 Replies
3317 Views |
by tdvt |
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Primary voltage readings
Started by TF2112 |
6 Replies
2611 Views |
by TF2112 |
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Hot switch or JCM 800
Started by Bigampman |
9 Replies
3396 Views |
by pdf64 |
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Gibson GA-16T/18T done
Started by Blooze |
29 Replies
6623 Views |
by Blooze |
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6SJ7 driven tremolo? Silvertone1333
Started by Jerry garrcia |
1 Replies
1890 Views |
by sluckey |
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Hum from power section
Started by Colas LeGrippa |
11 Replies
3438 Views |
by Colas LeGrippa |
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jcm800 2204 noisy
Started by fossilshark |
3 Replies
2439 Views |
by fossilshark |
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Marshall 2550 schematic
Started by Leevi |
1 Replies
2522 Views |
by sluckey |
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7 Replies
2903 Views |
by sluckey |
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5 Replies
2527 Views |
by kagliostro |
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32 Replies
6992 Views |
by Apexelectric |
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0 Replies
1908 Views |
by marshallguy |
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5 Replies
3327 Views |
by Amped |
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Cathode bias amp variable resistor
Started by Colas LeGrippa |
19 Replies
5564 Views |
by Colas LeGrippa |
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EF86 Microphonics and RF coupling?
Started by Jalmeida |
1 Replies
1974 Views |
by Williamblake |
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Rob Robinette Champ Micro Build
Started by AndrewD |
6 Replies
3313 Views |
by kagliostro |
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Weird power amp wiring
Started by Leevi |
3 Replies
2414 Views |
by PRR |
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21 Replies
5664 Views |
by pdf64 |
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8 Replies
3316 Views |
by bmccowan |
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Gibson GA-18T Tremolo
Started by Blooze |
10 Replies
3815 Views |
by sluckey |
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1 Replies
2007 Views |
by 72Blazer |
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PP valve amp KT88 BIAS-question
Started by cfortner |
22 Replies
5614 Views |
by cfortner |
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Filmosound 202 Help
Started by oogabooga23 |
6 Replies
3256 Views |
by BrainDeadAmps |
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139 Replies
26676 Views |
by acheld |
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Vox AC15C1 Burning 5 Watt Resistors
Started by Pavels07 |
10 Replies
4611 Views |
by AmberB |
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Channel switch grid reference
Started by BrainDeadAmps |
2 Replies
2412 Views |
by BrainDeadAmps |
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32 Replies
8736 Views |
by munkeyboy |
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13 Replies
4786 Views |
by sluckey |
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Fender Twin Reverb Troubleshooting
Started by NoDough |
20 Replies
7335 Views |
by mresistor |
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