Welcome To the Hoffman Amplifiers Forum
October 22, 2025, 05:20:23 pm
Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 05:20:23 pm | ||
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40 V AC in the green terminals of 6,3V
Started by rafaelctt |
32 Replies
6041 Views |
December 11, 2022, 08:54:57 amby sluckey |
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290AX wiring with a Champ 600 reissue
Started by JPK |
4 Replies
2226 Views |
December 10, 2022, 01:45:51 pm by JPK |
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8 Replies
2733 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
3358 Views |
December 09, 2022, 04:40:03 pm by pbman1953 |
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3 Replies
2070 Views |
December 09, 2022, 07:41:06 am by BrainDeadAmps |
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23 Replies
4606 Views |
December 09, 2022, 12:03:31 am by Platefire |
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5 Replies
2324 Views |
December 08, 2022, 05:07:44 pm by fdesalvo |
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14 Replies
3979 Views |
December 08, 2022, 09:19:02 am by kagliostro |
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AB764 Vibrochamp build questions
Started by J3ona1 |
2 Replies
1969 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
1709 Views |
December 06, 2022, 11:18:05 pm by sluckey |
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Need help with something wierd
Started by RoninAudio |
6 Replies
2411 Views |
December 06, 2022, 01:05:12 pm by RoninAudio |
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6 Replies
2756 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
3248 Views |
December 05, 2022, 01:22:02 pm by Voxbox |
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Changing this schematic presence control
Started by dude |
8 Replies
3274 Views |
December 05, 2022, 12:21:48 pm by dude |
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Output transformer ringing
Started by Esquirefreak |
0 Replies
1802 Views |
December 05, 2022, 11:33:53 am by Esquirefreak |
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Amp Projects
Started by Lectroid |
19 Replies
4990 Views |
December 04, 2022, 07:18:54 pm by PRR |
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11 Replies
3333 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
4293 Views |
December 04, 2022, 11:01:31 am by pdf64 |
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19 Replies
4794 Views |
December 03, 2022, 11:26:43 am by bmccowan |
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Passive Effects Loop Implementation
Started by McAbe |
9 Replies
4236 Views |
December 03, 2022, 02:47:37 am by pdf64 |
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3 Replies
2041 Views |
December 02, 2022, 06:27:10 pm by kagliostro |
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Power transformer wiring question
Started by Erik Aa |
23 Replies
5252 Views |
December 02, 2022, 01:38:04 pm by Erik Aa |
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59 Replies
64379 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
2694 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
3649 Views |
December 01, 2022, 11:20:55 am by kagliostro |
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7 Replies
2348 Views |
November 30, 2022, 01:21:48 pm by fdesalvo |
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parallel input jack wiring
Started by BrainDeadAmps |
2 Replies
1865 Views |
November 30, 2022, 12:33:00 pm by BrainDeadAmps |
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16 Replies
3665 Views |
November 30, 2022, 11:58:57 am by BetterOffShred |
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AC10 Intensity in AC4? <<Solved>>
Started by dwinstonwood |
14 Replies
4108 Views |
November 30, 2022, 08:58:41 am by dwinstonwood |
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29 Replies
5306 Views |
November 29, 2022, 10:11:29 pm by JPK |
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Howling Feedback in Reveb Recovery
Started by jewishjay |
5 Replies
2548 Views |
November 29, 2022, 11:02:35 am by GroundhogKen |
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12 Replies
3434 Views |
November 29, 2022, 07:33:48 am by Williamblake |
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15 Replies
11005 Views |
November 27, 2022, 05:57:03 pm by kagliostro |
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Vox AC4 question. Need explanations.
Started by johngovan |
9 Replies
3083 Views |
November 27, 2022, 03:49:28 pm by kagliostro |
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10 Replies
3456 Views |
November 27, 2022, 04:59:22 am by fkitch |
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7 Replies
2934 Views |
November 26, 2022, 05:01:22 pm by PRR |
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2 Replies
2082 Views |
November 26, 2022, 10:42:19 am by acheld |
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9 Replies
3186 Views |
November 25, 2022, 05:29:03 pm by HotBluePlates |
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Steve Luckey November project
Started by isaac_teller |
3 Replies
1983 Views |
November 25, 2022, 02:45:17 pm by kagliostro |
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Any issues with this laylout
Started by dude |
12 Replies
3295 Views |
November 25, 2022, 02:23:50 pm by sluckey |
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15 Replies
5286 Views |
November 25, 2022, 09:19:39 am by kagliostro |
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16 Replies
4292 Views |
November 25, 2022, 02:07:04 am by Jennings |
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1M value for Treble pot.
Started by Mr.Death |
2 Replies
1886 Views |
November 24, 2022, 06:10:13 pm by Mr.Death |
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11 Replies
3633 Views |
November 24, 2022, 05:09:40 pm by tubeswell |
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Plate Resistor Type Question
Started by dragonbat13 |
3 Replies
2024 Views |
November 24, 2022, 05:05:17 pm by tubeswell |
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Coupling capacitors
Started by Mr.Death |
3 Replies
2234 Views |
November 24, 2022, 04:09:21 pm by PRR |
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Leslie 45cab/47 power amp
Started by Willabe |
9 Replies
4925 Views |
November 24, 2022, 03:38:45 pm by PRR |
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Hoffman Plexi 50 power supply
Started by Sergiouliana |
20 Replies
4607 Views |
November 24, 2022, 12:44:28 pm by pdf64 |
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Output Transformer calculation
Started by Williamblake |
2 Replies
2428 Views |
November 24, 2022, 10:32:06 am by Williamblake |
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Adding some bottom end to an AX84 High Octane
Started by JPK |
10 Replies
3800 Views |
November 24, 2022, 07:37:42 am by JPK |
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