Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 10:43:49 am
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 10:43:49 am | ||
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0 Replies
1823 Views |
June 04, 2023, 09:42:08 amby marshallguy |
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KT90EH biasing discrepancy
Started by marshallguy |
5 Replies
2973 Views |
June 04, 2023, 08:46:48 am by marshallguy |
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Marshall DSL 20R
Started by luthiernc |
0 Replies
2029 Views |
June 03, 2023, 06:05:45 am by luthiernc |
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13 Replies
3752 Views |
June 02, 2023, 02:00:46 pm by PRR |
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Parallel triode Rg values
Started by Esquirefreak |
3 Replies
2161 Views |
June 01, 2023, 01:42:27 pm by Esquirefreak |
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8 Replies
3957 Views |
June 01, 2023, 12:51:18 pm by tubeswell |
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Vox AC-15 Vibrato channel low volume
Started by sluckey |
8 Replies
3623 Views |
May 31, 2023, 10:31:13 pm by sluckey |
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8 Replies
3266 Views |
May 31, 2023, 04:59:27 pm by fossilshark |
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Bias Calculations for Cathode bias??
Started by Jalmeida |
10 Replies
4164 Views |
May 31, 2023, 11:02:58 am by Lectroid |
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30ish watt bass amp
Started by Beezerboy |
16 Replies
4408 Views |
May 30, 2023, 08:19:17 am by Lectroid |
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28 Replies
6084 Views |
May 29, 2023, 06:04:07 pm by jeff |
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11 Replies
3258 Views |
May 29, 2023, 04:27:27 pm by mresistor |
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11 Replies
3433 Views |
May 29, 2023, 12:54:43 pm by dude |
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Gretsch Playboy 6156T No Schematic Found
Started by plexi50 |
12 Replies
3926 Views |
May 29, 2023, 11:07:44 am by plexi50 |
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pre-made fwb rectifiers
Started by joesatch |
11 Replies
3519 Views |
May 29, 2023, 10:28:40 am by thetragichero |
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5 Replies
2865 Views |
May 28, 2023, 04:06:11 pm by Porpoise Head |
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1964 Vibroverb
Started by Rockranger |
9 Replies
3284 Views |
May 28, 2023, 12:39:32 pm by Rockranger |
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Effects Loop Questions
Started by Rontone |
6 Replies
3587 Views |
May 28, 2023, 11:48:55 am by Rontone |
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Nolan 50w Multi Purpose Amp Repair
Started by Rontone |
7 Replies
3555 Views |
May 28, 2023, 09:40:00 am by Rontone |
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Traynor YVM-1 much needed repair
Started by fossilshark |
11 Replies
3680 Views |
May 28, 2023, 09:15:08 am by sluckey |
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13 Replies
4230 Views |
May 27, 2023, 06:27:19 am by p2pAmps |
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8 Replies
3317 Views |
May 26, 2023, 01:40:21 pm by tdvt |
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Primary voltage readings
Started by TF2112 |
6 Replies
2611 Views |
May 26, 2023, 11:37:55 am by TF2112 |
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Hot switch or JCM 800
Started by Bigampman |
9 Replies
3396 Views |
May 26, 2023, 10:59:24 am by pdf64 |
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Gibson GA-16T/18T done
Started by Blooze |
29 Replies
6623 Views |
May 25, 2023, 08:40:30 pm by Blooze |
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6SJ7 driven tremolo? Silvertone1333
Started by Jerry garrcia |
1 Replies
1890 Views |
May 25, 2023, 04:42:40 pm by sluckey |
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Hum from power section
Started by Colas LeGrippa |
11 Replies
3438 Views |
May 25, 2023, 12:09:21 pm by Colas LeGrippa |
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jcm800 2204 noisy
Started by fossilshark |
3 Replies
2439 Views |
May 25, 2023, 09:22:14 am by fossilshark |
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Marshall 2550 schematic
Started by Leevi |
1 Replies
2522 Views |
May 25, 2023, 06:30:26 am by sluckey |
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7 Replies
2903 Views |
May 25, 2023, 06:21:13 am by sluckey |
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5 Replies
2527 Views |
May 25, 2023, 02:46:55 am by kagliostro |
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32 Replies
6992 Views |
May 24, 2023, 08:46:35 pm by Apexelectric |
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0 Replies
1908 Views |
May 24, 2023, 07:16:08 pm by marshallguy |
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5 Replies
3327 Views |
May 23, 2023, 09:36:41 pm by Amped |
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Cathode bias amp variable resistor
Started by Colas LeGrippa |
19 Replies
5564 Views |
May 23, 2023, 07:04:33 pm by Colas LeGrippa |
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EF86 Microphonics and RF coupling?
Started by Jalmeida |
1 Replies
1974 Views |
May 23, 2023, 12:46:50 pm by Williamblake |
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Rob Robinette Champ Micro Build
Started by AndrewD |
6 Replies
3313 Views |
May 23, 2023, 06:45:35 am by kagliostro |
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Weird power amp wiring
Started by Leevi |
3 Replies
2414 Views |
May 22, 2023, 04:13:35 pm by PRR |
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21 Replies
5664 Views |
May 22, 2023, 04:32:28 am by pdf64 |
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8 Replies
3316 Views |
May 21, 2023, 08:27:23 pm by bmccowan |
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Gibson GA-18T Tremolo
Started by Blooze |
10 Replies
3815 Views |
May 21, 2023, 09:05:14 am by sluckey |
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1 Replies
2007 Views |
May 20, 2023, 07:37:59 pm by 72Blazer |
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PP valve amp KT88 BIAS-question
Started by cfortner |
22 Replies
5614 Views |
May 20, 2023, 04:36:51 pm by cfortner |
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Filmosound 202 Help
Started by oogabooga23 |
6 Replies
3256 Views |
May 20, 2023, 12:27:31 pm by BrainDeadAmps |
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139 Replies
26676 Views |
May 19, 2023, 09:00:02 pm by acheld |
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Vox AC15C1 Burning 5 Watt Resistors
Started by Pavels07 |
10 Replies
4611 Views |
May 19, 2023, 05:32:46 pm by AmberB |
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Channel switch grid reference
Started by BrainDeadAmps |
2 Replies
2412 Views |
May 19, 2023, 04:05:08 pm by BrainDeadAmps |
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32 Replies
8736 Views |
May 18, 2023, 11:34:09 am by munkeyboy |
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13 Replies
4786 Views |
May 18, 2023, 08:41:41 am by sluckey |
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Fender Twin Reverb Troubleshooting
Started by NoDough |
20 Replies
7335 Views |
May 17, 2023, 10:36:04 pm by mresistor |
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