Welcome To the Hoffman Amplifiers Forum
January 23, 2026, 09:41:46 pm
Welcome To the Hoffman Amplifiers ForumJanuary 23, 2026, 09:41:46 pm | ||
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| apeontheweb and 52 Guests are viewing this board. | ||||
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2 Replies
3109 Views |
August 08, 2023, 09:40:30 pmby Planobilly |
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1 Replies
2605 Views |
August 08, 2023, 03:34:18 pm by sluckey |
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4 Replies
3010 Views |
August 08, 2023, 11:27:23 am by zephyrblau |
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Choke for 5f6a build
Started by Mypalmurph |
2 Replies
2787 Views |
August 08, 2023, 10:52:22 am by Mypalmurph |
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Reverb transformer grounding
Started by marshallguy |
5 Replies
3702 Views |
August 08, 2023, 05:55:13 am by marshallguy |
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Measuring V+(plate voltage)
Started by Champ_49 |
9 Replies
4042 Views |
August 08, 2023, 03:52:34 am by shooter |
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11 Replies
4250 Views |
August 07, 2023, 07:43:14 pm by sluckey |
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15 Replies
6127 Views |
August 07, 2023, 05:20:33 pm by mmack |
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EL34 vs 6L6 bias supply
Started by fossilshark |
2 Replies
3100 Views |
August 07, 2023, 02:39:11 pm by PRR |
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5e3 circuit with 500k pots?
Started by roseblood11 |
7 Replies
4160 Views |
August 07, 2023, 08:21:15 am by roseblood11 |
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SVT with a 600 Ohm input
Started by pbman1953 |
4 Replies
3276 Views |
August 05, 2023, 05:10:09 pm by pbman1953 |
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Attention Visio users!
Started by sluckey |
1 Replies
2646 Views |
August 05, 2023, 03:41:21 pm by kagliostro |
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Grounding schemes
Started by marshallguy |
2 Replies
2642 Views |
August 05, 2023, 01:50:58 pm by marshallguy |
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Amp startup issues - light bulb glowing
Started by jordan86 |
15 Replies
5227 Views |
August 05, 2023, 10:52:01 am by jordan86 |
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'68 AB763 Showman tremolo tick
Started by Esquirefreak |
0 Replies
2506 Views |
August 05, 2023, 08:17:01 am by Esquirefreak |
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Tremodrive Oscillator question
Started by TurboGuitarMelton |
5 Replies
4022 Views |
August 04, 2023, 11:54:44 pm by PRR |
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power supply bias design
Started by fossilshark |
4 Replies
3091 Views |
August 04, 2023, 11:03:01 pm by fossilshark |
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Mosfet reverb recovery
Started by Bieworm |
14 Replies
5229 Views |
August 04, 2023, 04:08:30 pm by PRR |
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9 Replies
3911 Views |
August 04, 2023, 01:14:50 pm by marshallguy |
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Multi amp switcher thing
Started by fossilshark |
9 Replies
4138 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
3777 Views |
August 03, 2023, 09:37:27 pm by AHeck |
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FX series Loop design
Started by marshallguy |
11 Replies
4636 Views |
August 03, 2023, 09:23:04 pm by sluckey |
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21 Replies
5802 Views |
August 03, 2023, 07:24:38 pm by marshallguy |
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Presense and Resonance
Started by jim |
0 Replies
2304 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
4518 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
12339 Views |
August 02, 2023, 06:08:38 pm by Jerry garrcia |
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Variac tested
Started by Colas LeGrippa |
16 Replies
5166 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
2533 Views |
August 02, 2023, 09:12:13 am by cfortner |
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Restoring Old Power Transformer
Started by TurboGuitarMelton |
10 Replies
5299 Views |
August 02, 2023, 08:29:50 am by kagliostro |
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5 Replies
3893 Views |
August 01, 2023, 05:41:59 pm by sluckey |
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filament wiring
Started by labb |
3 Replies
2931 Views |
August 01, 2023, 04:48:29 pm by sluckey |
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3 Replies
3232 Views |
August 01, 2023, 02:09:44 pm by kagliostro |
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Super reverb clone
Started by Rockranger |
10 Replies
4311 Views |
August 01, 2023, 02:23:46 am by Rockranger |
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3 Replies
3238 Views |
July 31, 2023, 04:11:04 pm by HotBluePlates |
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TMB Stout with 6v6's
Started by Rixster909 |
0 Replies
2573 Views |
July 31, 2023, 02:06:21 am by Rixster909 |
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8 Replies
3719 Views |
July 30, 2023, 08:00:56 am by tdvt |
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Conrad Sundholm RIP
Started by SoundmasterG |
6 Replies
4056 Views |
July 29, 2023, 11:56:26 pm by SoundmasterG |
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9 Replies
3918 Views |
July 28, 2023, 06:30:06 pm by Opry Audio |
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preamp stage circuit analysis
Started by joesatch |
12 Replies
4268 Views |
July 28, 2023, 03:47:33 pm by shooter |
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11 Replies
4293 Views |
July 28, 2023, 12:25:21 pm by sluckey |
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ENGL Savage 120 low bias
Started by Travis8 |
35 Replies
9602 Views |
July 28, 2023, 04:44:18 am by Latole |
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Question for Tubnit
Started by Tone Junkie |
5 Replies
3394 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
4054 Views |
July 27, 2023, 06:42:47 pm by sluckey |
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how to place the components?
Started by roseblood11 |
8 Replies
3529 Views |
July 27, 2023, 12:11:26 pm by roseblood11 |
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Coupling cap switch options
Started by echuta13 |
5 Replies
4436 Views |
July 27, 2023, 09:17:43 am by roseblood11 |
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6 Replies
3668 Views |
July 27, 2023, 05:45:01 am by cfortner |
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6 Replies
3642 Views |
July 27, 2023, 04:40:36 am by RoadShow |
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Dropping voltage BEFORE rectifier tube?
Started by Duncan |
8 Replies
3826 Views |
July 27, 2023, 01:18:58 am by kagliostro |
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133 Replies
23165 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
4870 Views |
July 26, 2023, 01:31:06 pm by cfortner |
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