Welcome To the Hoffman Amplifiers Forum
April 25, 2026, 10:29:08 pm
Welcome To the Hoffman Amplifiers ForumApril 25, 2026, 10:29:08 pm | ||
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14 Replies
6721 Views |
December 17, 2022, 02:11:48 pmby madnis |
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Hohner Kingstar 20 suggestions
Started by Kesi from Hungary |
3 Replies
3717 Views |
December 17, 2022, 11:34:17 am by Kesi from Hungary |
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How to identify part values....
Started by mmrxcsr01 |
10 Replies
4720 Views |
December 17, 2022, 08:57:53 am by mmrxcsr01 |
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Help me understand this screen supply
Started by Duckmang |
17 Replies
7436 Views |
December 16, 2022, 09:47:06 pm by Duckmang |
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5840 tube question
Started by Oddvar |
5 Replies
4869 Views |
December 16, 2022, 05:48:24 pm by scstill |
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New versus old Jensen P12Q speakers
Started by Voxbox |
0 Replies
3163 Views |
December 16, 2022, 11:02:35 am by Voxbox |
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5 Replies
4818 Views |
December 16, 2022, 08:10:08 am by JPK |
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18 Replies
7314 Views |
December 15, 2022, 09:51:38 pm by Fraggy0117 |
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Stop channel interaction on modded bassman
Started by Kev01 |
22 Replies
7398 Views |
December 15, 2022, 09:00:25 pm by bmccowan |
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a bias procedure question
Started by pbman1953 |
20 Replies
7512 Views |
December 14, 2022, 07:06:22 pm by tubeswell |
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Watkins Copicat tape speed question
Started by Jennings |
2 Replies
3041 Views |
December 14, 2022, 06:51:35 pm by acheld |
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Sunn Clone
Started by DummyLoad |
26 Replies
8177 Views |
December 14, 2022, 11:41:44 am by Platefire |
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8 Replies
5769 Views |
December 14, 2022, 10:25:39 am by Voxbox |
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Marshall Origin mod troubleshooting
Started by Ledvedder |
6 Replies
5242 Views |
December 14, 2022, 07:41:12 am by Ledvedder |
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High VAC on B+
Started by CrocMule |
16 Replies
5869 Views |
December 14, 2022, 06:11:54 am by HotBluePlates |
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Mod filters
Started by dude |
4 Replies
4263 Views |
December 14, 2022, 05:44:34 am by HotBluePlates |
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4 Replies
3242 Views |
December 13, 2022, 11:44:09 pm by swingarm |
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Harvard Amp Mod
Started by TurboGuitarMelton |
14 Replies
6373 Views |
December 13, 2022, 01:29:02 pm by CascoSieg |
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6 Replies
4690 Views |
December 13, 2022, 09:09:08 am by punkykatt |
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8 Replies
5047 Views |
December 12, 2022, 12:26:21 pm by tubeswell |
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12 Replies
5517 Views |
December 11, 2022, 06:36:02 pm by fazeka |
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5f6a bias tap glow
Started by tommyzcat |
10 Replies
3887 Views |
December 11, 2022, 03:08:48 pm by tommyzcat |
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11 Replies
4557 Views |
December 11, 2022, 02:27:53 pm by sluckey |
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mosfet trem blowing PS resistors...
Started by CascoSieg |
13 Replies
4886 Views |
December 11, 2022, 11:20:31 am by CascoSieg |
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EL34 suppressor grid
Started by SoundCity85 |
5 Replies
3666 Views |
December 11, 2022, 09:51:31 am by SoundCity85 |
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40 V AC in the green terminals of 6,3V
Started by rafaelctt |
32 Replies
8498 Views |
December 11, 2022, 08:54:57 am by sluckey |
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290AX wiring with a Champ 600 reissue
Started by JPK |
4 Replies
3430 Views |
December 10, 2022, 01:45:51 pm by JPK |
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8 Replies
3932 Views |
December 10, 2022, 06:32:19 am by kagliostro |
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Revisit- Fender Super Twin- New Project
Started by pbman1953 |
14 Replies
4860 Views |
December 09, 2022, 04:40:03 pm by pbman1953 |
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3 Replies
3074 Views |
December 09, 2022, 07:41:06 am by BrainDeadAmps |
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23 Replies
6076 Views |
December 09, 2022, 12:03:31 am by Platefire |
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5 Replies
3323 Views |
December 08, 2022, 05:07:44 pm by fdesalvo |
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14 Replies
5479 Views |
December 08, 2022, 09:19:02 am by kagliostro |
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AB764 Vibrochamp build questions
Started by J3ona1 |
2 Replies
2913 Views |
December 07, 2022, 10:29:05 pm by J3ona1 |
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Another PR build post with questions…
Started by Jalmeida |
1 Replies
2261 Views |
December 06, 2022, 11:18:05 pm by sluckey |
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Need help with something wierd
Started by RoninAudio |
6 Replies
3442 Views |
December 06, 2022, 01:05:12 pm by RoninAudio |
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6 Replies
4181 Views |
December 05, 2022, 10:13:49 pm by JPK |
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New 5E3 build bias check - am I ok?
Started by JPK |
10 Replies
4595 Views |
December 05, 2022, 01:22:02 pm by Voxbox |
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Changing this schematic presence control
Started by dude |
8 Replies
4664 Views |
December 05, 2022, 12:21:48 pm by dude |
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Output transformer ringing
Started by Esquirefreak |
0 Replies
2712 Views |
December 05, 2022, 11:33:53 am by Esquirefreak |
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Amp Projects
Started by Lectroid |
19 Replies
6892 Views |
December 04, 2022, 07:18:54 pm by PRR |
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11 Replies
4518 Views |
December 04, 2022, 02:07:36 pm by kagliostro |
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Cathode biased Blues Junior new project
Started by acheld |
13 Replies
6074 Views |
December 04, 2022, 11:01:31 am by pdf64 |
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19 Replies
7462 Views |
December 03, 2022, 11:26:43 am by bmccowan |
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Passive Effects Loop Implementation
Started by McAbe |
9 Replies
6118 Views |
December 03, 2022, 02:47:37 am by pdf64 |
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3 Replies
2917 Views |
December 02, 2022, 06:27:10 pm by kagliostro |
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Power transformer wiring question
Started by Erik Aa |
23 Replies
7458 Views |
December 02, 2022, 01:38:04 pm by Erik Aa |
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59 Replies
75334 Views |
December 01, 2022, 04:01:27 pm by shooter |
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The danger of vacuum tubes
Started by isaac_teller |
5 Replies
3682 Views |
December 01, 2022, 03:44:28 pm by mresistor |
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Switch between 2 different output valves
Started by Paulycoo |
16 Replies
5171 Views |
December 01, 2022, 11:20:55 am by kagliostro |
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