Welcome To the Hoffman Amplifiers Forum
October 22, 2025, 02:53:56 pm
Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 02:53:56 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 44 Guests are viewing this board. | ||||
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Amp startup issues - light bulb glowing
Started by jordan86 |
15 Replies
4080 Views |
August 05, 2023, 10:52:01 amby jordan86 |
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'68 AB763 Showman tremolo tick
Started by Esquirefreak |
0 Replies
1954 Views |
August 05, 2023, 08:17:01 am by Esquirefreak |
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Tremodrive Oscillator question
Started by TurboGuitarMelton |
5 Replies
3255 Views |
August 04, 2023, 11:54:44 pm by PRR |
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power supply bias design
Started by fossilshark |
4 Replies
2408 Views |
August 04, 2023, 11:03:01 pm by fossilshark |
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Mosfet reverb recovery
Started by Bieworm |
14 Replies
4190 Views |
August 04, 2023, 04:08:30 pm by PRR |
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9 Replies
2967 Views |
August 04, 2023, 01:14:50 pm by marshallguy |
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Multi amp switcher thing
Started by fossilshark |
9 Replies
3307 Views |
August 04, 2023, 01:12:53 pm by fossilshark |
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Alembic F-2B To Line Level Out
Started by AHeck |
7 Replies
3007 Views |
August 03, 2023, 09:37:27 pm by AHeck |
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FX series Loop design
Started by marshallguy |
11 Replies
3709 Views |
August 03, 2023, 09:23:04 pm by sluckey |
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21 Replies
4662 Views |
August 03, 2023, 07:24:38 pm by marshallguy |
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Presense and Resonance
Started by jim |
0 Replies
1821 Views |
August 03, 2023, 09:14:27 am by jim |
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Big problem with deluxe reverb 65
Started by Travis8 |
16 Replies
3598 Views |
August 03, 2023, 06:19:56 am by Latole |
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Using octal tube for a 'one tube' reverb
Started by smackoj |
40 Replies
10548 Views |
August 02, 2023, 06:08:38 pm by Jerry garrcia |
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Variac tested
Started by Colas LeGrippa |
16 Replies
4193 Views |
August 02, 2023, 04:16:31 pm by Colas LeGrippa |
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Two heater circuits - grounding both?
Started by cfortner |
2 Replies
2013 Views |
August 02, 2023, 09:12:13 am by cfortner |
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Restoring Old Power Transformer
Started by TurboGuitarMelton |
10 Replies
4324 Views |
August 02, 2023, 08:29:50 am by kagliostro |
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5 Replies
3111 Views |
August 01, 2023, 05:41:59 pm by sluckey |
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filament wiring
Started by labb |
3 Replies
2380 Views |
August 01, 2023, 04:48:29 pm by sluckey |
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3 Replies
2567 Views |
August 01, 2023, 02:09:44 pm by kagliostro |
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Super reverb clone
Started by Rockranger |
10 Replies
3583 Views |
August 01, 2023, 02:23:46 am by Rockranger |
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3 Replies
2642 Views |
July 31, 2023, 04:11:04 pm by HotBluePlates |
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TMB Stout with 6v6's
Started by Rixster909 |
0 Replies
2053 Views |
July 31, 2023, 02:06:21 am by Rixster909 |
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8 Replies
3092 Views |
July 30, 2023, 08:00:56 am by tdvt |
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Conrad Sundholm RIP
Started by SoundmasterG |
6 Replies
3191 Views |
July 29, 2023, 11:56:26 pm by SoundmasterG |
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9 Replies
3121 Views |
July 28, 2023, 06:30:06 pm by Opry Audio |
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preamp stage circuit analysis
Started by joesatch |
12 Replies
3387 Views |
July 28, 2023, 03:47:33 pm by shooter |
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11 Replies
3433 Views |
July 28, 2023, 12:25:21 pm by sluckey |
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ENGL Savage 120 low bias
Started by Travis8 |
35 Replies
7688 Views |
July 28, 2023, 04:44:18 am by Latole |
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Question for Tubnit
Started by Tone Junkie |
5 Replies
2779 Views |
July 28, 2023, 12:30:47 am by Tone Junkie |
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AB763 HISS on the Tremolo circuit
Started by CharacterZero |
8 Replies
3222 Views |
July 27, 2023, 06:42:47 pm by sluckey |
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how to place the components?
Started by roseblood11 |
8 Replies
2888 Views |
July 27, 2023, 12:11:26 pm by roseblood11 |
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Coupling cap switch options
Started by echuta13 |
5 Replies
3760 Views |
July 27, 2023, 09:17:43 am by roseblood11 |
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6 Replies
2954 Views |
July 27, 2023, 05:45:01 am by cfortner |
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6 Replies
2902 Views |
July 27, 2023, 04:40:36 am by RoadShow |
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Dropping voltage BEFORE rectifier tube?
Started by Duncan |
8 Replies
3072 Views |
July 27, 2023, 01:18:58 am by kagliostro |
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133 Replies
18194 Views |
July 26, 2023, 09:16:47 pm by Platefire |
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In which class works the Hiwatt 400W ?
Started by kagliostro |
10 Replies
3892 Views |
July 26, 2023, 01:31:06 pm by cfortner |
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8 Replies
3272 Views |
July 26, 2023, 08:58:32 am by SnickSound |
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53 Replies
33152 Views |
July 26, 2023, 05:56:22 am by marshallguy |
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1/4 watt resistor crisis
Started by joesatch |
9 Replies
3526 Views |
July 25, 2023, 10:44:45 pm by PRR |
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6 Replies
3297 Views |
July 24, 2023, 05:36:08 pm by AmberB |
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7 Replies
2675 Views |
July 24, 2023, 07:49:22 am by shooter |
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Supro S-6424 PT and OT recomendations
Started by Planobilly |
6 Replies
2707 Views |
July 22, 2023, 05:28:26 pm by bmccowan |
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7 Replies
5396 Views |
July 22, 2023, 03:49:21 pm by dwinstonwood |
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22 Replies
5319 Views |
July 22, 2023, 02:54:39 pm by 72Blazer |
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KUSTOM DEFENDER 112 TUBES OFF
Started by Travis8 |
17 Replies
3954 Views |
July 22, 2023, 01:32:25 pm by Travis8 |
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Variation of Type 3 Master
Started by jordan86 |
12 Replies
4281 Views |
July 22, 2023, 10:08:12 am by jordan86 |
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Weird Mesa Heartbreaker screw
Started by Voxbox |
7 Replies
3221 Views |
July 22, 2023, 03:53:53 am by Latole |
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11 Replies
3555 Views |
July 21, 2023, 07:47:33 am by RoadShow |
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18 Replies
4422 Views |
July 20, 2023, 10:35:46 pm by tubeswell |
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