Welcome To the Hoffman Amplifiers Forum
January 24, 2026, 05:20:13 am
Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 05:20:13 am | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 38 Guests are viewing this board. | ||||
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Breadboard for OT
Started by dude |
3 Replies
2575 Views |
March 08, 2020, 04:06:43 pmby dude |
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Dual Rectifier without 5V secondary
Started by Leevi |
16 Replies
5125 Views |
March 07, 2020, 05:43:23 pm by DummyLoad |
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very high negative bias
Started by jayallen |
39 Replies
9231 Views |
March 07, 2020, 03:46:23 pm by Williamblake |
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Matchless Tornado build
Started by mebond11 |
4 Replies
2449 Views |
March 07, 2020, 01:16:14 pm by mebond11 |
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5F2A Build - Nasty Squeal
Started by SkipJohnson |
21 Replies
8559 Views |
March 07, 2020, 11:46:11 am by SkipJohnson |
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Toggle Switch for PT secondaries
Started by 66Strat |
7 Replies
3873 Views |
March 07, 2020, 10:35:04 am by pdf64 |
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Stress on power tubes question
Started by punkykatt |
6 Replies
3277 Views |
March 06, 2020, 07:05:10 pm by punkykatt |
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Next build suggestions please.
Started by yorgle |
6 Replies
2992 Views |
March 06, 2020, 11:50:07 am by yorgle |
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10 Replies
4235 Views |
March 06, 2020, 07:13:05 am by pdf64 |
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2 Replies
2689 Views |
March 06, 2020, 05:15:46 am by kagliostro |
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Matchless clone build issue
Started by gerry113377 |
34 Replies
9565 Views |
March 05, 2020, 09:40:31 am by nandrewjackson |
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CE Manufacturing Cap Cans
Started by cyborg_stew |
7 Replies
3614 Views |
March 03, 2020, 12:49:28 pm by shooter |
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38 Replies
12068 Views |
March 03, 2020, 10:49:06 am by shaun |
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10 Replies
3846 Views |
March 03, 2020, 07:44:09 am by d95err |
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Reverb tank.impedance question
Started by Colas LeGrippa |
8 Replies
4565 Views |
March 02, 2020, 12:21:39 pm by shooter |
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EL84 Amp with Reverb
Started by carausius |
22 Replies
11445 Views |
March 02, 2020, 09:25:53 am by Blackface5f6 |
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10 Replies
4135 Views |
March 01, 2020, 07:33:28 pm by dude |
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Channel Switching Help
Started by dearborndave |
6 Replies
3166 Views |
March 01, 2020, 11:52:09 am by dearborndave |
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2204 makes loud noise on the speaker
Started by Mehfuzhoss |
9 Replies
3501 Views |
March 01, 2020, 10:58:18 am by sluckey |
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15 Replies
8322 Views |
March 01, 2020, 09:20:54 am by Jonas |
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SE 6L6 VS parallel SE 6V6
Started by TurboGuitarMelton |
20 Replies
9760 Views |
March 01, 2020, 05:05:00 am by pdf64 |
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Another Dual Lite build thread - half working
Started by choosebronze « 1 2 » |
60 Replies
14763 Views |
March 01, 2020, 01:20:11 am by PRR |
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5F2A using EL84 Harsh Clipping
Started by shaun |
17 Replies
6087 Views |
February 29, 2020, 06:44:50 pm by shaun |
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AB165 Bias upgrade
Started by angelodp |
1 Replies
2242 Views |
February 29, 2020, 01:31:00 pm by sluckey |
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Fender Princeton sterile tone
Started by Colas LeGrippa |
7 Replies
3015 Views |
February 29, 2020, 09:40:04 am by shooter |
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15 Replies
5568 Views |
February 28, 2020, 04:25:45 am by nandrewjackson |
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ReVibe Grounding Scheme
Started by alathIN |
9 Replies
3707 Views |
February 27, 2020, 10:16:38 pm by alathIN |
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Washers for Carling on/off switches
Started by dude |
8 Replies
3303 Views |
February 27, 2020, 06:19:11 pm by dude |
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4 Replies
2855 Views |
February 27, 2020, 12:17:57 pm by shooter |
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plexi 50 modification question.
Started by Curranm |
5 Replies
2714 Views |
February 27, 2020, 10:03:25 am by sluckey |
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2 Replies
2549 Views |
February 27, 2020, 10:00:31 am by pi-amp |
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Belarus 57
Started by puudub |
11 Replies
4450 Views |
February 27, 2020, 06:47:33 am by puudub |
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Hoffman Revibe build
Started by Diverted |
8 Replies
3384 Views |
February 26, 2020, 04:35:47 pm by Diverted |
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Bias based on valve or amp power?
Started by leroy |
7 Replies
2819 Views |
February 26, 2020, 04:26:34 pm by shooter |
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5 Replies
3368 Views |
February 26, 2020, 03:32:53 pm by Colas LeGrippa |
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1940 national field coil ?
Started by fred |
14 Replies
5363 Views |
February 25, 2020, 09:51:20 pm by fred |
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64 Replies
24905 Views |
February 25, 2020, 03:58:41 pm by Ed_Chambley |
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22 Replies
7549 Views |
February 25, 2020, 09:53:43 am by Ed_Chambley |
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20 WATT NEW BUILD ,ANY SUGGESTIONS?
Started by mikhett |
5 Replies
2854 Views |
February 24, 2020, 08:47:49 pm by fossilshark |
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Voltage from AO-43 PT high?
Started by dude |
5 Replies
3036 Views |
February 24, 2020, 06:30:59 pm by dude |
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Power supply / Grid crackling
Started by plexi50 |
8 Replies
3803 Views |
February 24, 2020, 04:13:27 pm by mwelch55 |
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Solow Watt 12a_7 power supply question
Started by pullshocks |
5 Replies
3085 Views |
February 24, 2020, 02:15:03 pm by pullshocks |
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Modern Multi-Watt Amps
Started by jlapalme |
17 Replies
5910 Views |
February 24, 2020, 11:06:01 am by pdf64 |
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Secret sauce of the Mesa Dual Recto
Started by jlapalme |
0 Replies
2125 Views |
February 23, 2020, 11:49:32 pm by jlapalme |
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2204 using Hammond 290GX PT
Started by Mehfuzhoss |
5 Replies
2895 Views |
February 23, 2020, 08:43:30 pm by Mehfuzhoss |
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Separate clean channel for JCM800-20W
Started by adamG |
21 Replies
5911 Views |
February 23, 2020, 04:00:37 pm by adamG |
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probably short PT
Started by Dimitree |
6 Replies
2861 Views |
February 22, 2020, 04:29:20 pm by sluckey |
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D-763 RV schematic help please
Started by tubenit |
6 Replies
2528 Views |
February 22, 2020, 01:59:26 pm by tubenit |
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Control grid wiring
Started by dude |
6 Replies
2806 Views |
February 22, 2020, 11:26:11 am by dude |
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Semi-Hoffman 2203 Build Hum
Started by 3rdof3 |
14 Replies
5010 Views |
February 22, 2020, 09:05:30 am by 3rdof3 |
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