Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 01:03:08 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 01:03:08 pm | ||
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| 0 Members and 149 Guests are viewing this board. | ||||
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DIY 2204 negative DC voltage on grid of preamp tube
Started by jasonvilla « 1 2 3 » |
118 Replies
27041 Views |
September 24, 2020, 12:30:49 pmby jasonvilla |
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4 Replies
2786 Views |
September 24, 2020, 10:13:53 am by Latole |
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1978 JMP 2204 Input Question
Started by dunner84 |
2 Replies
1908 Views |
September 24, 2020, 03:45:05 am by Latole |
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Voltages on vintage tube amps
Started by VintageAmps |
8 Replies
4121 Views |
September 23, 2020, 08:06:10 pm by VintageAmps |
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62 Replies
21022 Views |
September 23, 2020, 05:20:28 pm by Baptiste |
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Three wire choke
Started by Sonny ReVerb |
6 Replies
3409 Views |
September 23, 2020, 01:03:19 pm by Latole |
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Gibson clone
Started by tobyk |
10 Replies
2877 Views |
September 22, 2020, 10:51:30 pm by PRR |
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3 Replies
3097 Views |
September 22, 2020, 03:14:46 pm by MWaldorf |
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Low heater voltage?
Started by daveyajd |
38 Replies
10220 Views |
September 22, 2020, 02:40:07 pm by Latole |
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Silvertone 1484 - Channel 2 Hum
Started by scstill |
12 Replies
4586 Views |
September 21, 2020, 11:04:04 pm by sluckey |
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Mystery Vintage amp
Started by Raybob |
10 Replies
2775 Views |
September 21, 2020, 09:02:42 pm by DummyLoad |
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21 Replies
5163 Views |
September 21, 2020, 07:13:51 pm by luthierwnc |
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38 Replies
10995 Views |
September 21, 2020, 05:31:48 pm by passaloutre |
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New 5F6A build, Low unloaded B+
Started by CascoSieg |
5 Replies
2591 Views |
September 21, 2020, 03:10:05 pm by CascoSieg |
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grid leak resistor
Started by isaac_teller |
3 Replies
1931 Views |
September 21, 2020, 02:31:05 am by isaac_teller |
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13 Replies
3441 Views |
September 20, 2020, 04:50:00 pm by Gone_Fishing |
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18 Replies
21511 Views |
September 20, 2020, 02:17:38 pm by fretts |
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Custom chassis fabricator suggestions?
Started by leonc |
12 Replies
5740 Views |
September 20, 2020, 02:10:46 pm by leonc |
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51 Replies
9183 Views |
September 19, 2020, 08:03:10 pm by neddyboy |
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6 Replies
3156 Views |
September 19, 2020, 02:54:14 pm by Latole |
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30 Replies
6619 Views |
September 19, 2020, 08:18:36 am by Diverted |
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10 Replies
5809 Views |
September 18, 2020, 03:27:39 pm by Curranm |
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New Reverb tank on fender amp
Started by sebbes |
4 Replies
2644 Views |
September 18, 2020, 12:44:38 pm by ac427v |
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Dynacord DA15/V restoration
Started by SelmaSedlak |
4 Replies
3286 Views |
September 18, 2020, 10:23:02 am by Latole |
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5 Replies
3046 Views |
September 17, 2020, 08:17:16 pm by tubeswell |
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4 Replies
1902 Views |
September 17, 2020, 04:33:46 pm by judgeamps |
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Hi/Lo input ground wiring
Started by daveyajd |
13 Replies
5725 Views |
September 17, 2020, 12:10:12 pm by tubeswell |
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MU metal foil
Started by Leevi |
9 Replies
3276 Views |
September 17, 2020, 07:35:40 am by shooter |
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16 Replies
5731 Views |
September 16, 2020, 09:34:17 pm by sluckey |
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7 Replies
4163 Views |
September 16, 2020, 12:22:25 pm by Latole |
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Dr Z EMS JCM800/JTM50 style amp
Started by RobBozic |
6 Replies
3891 Views |
September 16, 2020, 06:11:13 am by pdf64 |
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Stereo guitar amp ideas
Started by goldstache |
7 Replies
2805 Views |
September 16, 2020, 12:55:49 am by Toxophilite |
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6 Replies
3033 Views |
September 15, 2020, 06:31:58 pm by Opry Audio |
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Output Trans question
Started by pda041376 |
14 Replies
3852 Views |
September 14, 2020, 08:24:22 pm by AmberB |
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Heater reference voltage question
Started by AmberB |
6 Replies
2659 Views |
September 14, 2020, 10:16:52 am by HotBluePlates |
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quick question on heater wiring
Started by AmberB |
2 Replies
1919 Views |
September 13, 2020, 10:05:28 am by HotBluePlates |
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Heater filament resistance question
Started by Joel |
7 Replies
4362 Views |
September 13, 2020, 09:50:48 am by HotBluePlates |
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Rail Voltage on Grids
Started by Wanabejimi |
3 Replies
2052 Views |
September 13, 2020, 09:50:46 am by Wanabejimi |
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16 Replies
4206 Views |
September 12, 2020, 12:25:42 am by PRR |
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1/2w vs 1w resistors 5f1 build
Started by British1011 |
27 Replies
10344 Views |
September 11, 2020, 04:14:12 pm by 66Strat |
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Stumped on bias problem
Started by luthierwnc |
19 Replies
5606 Views |
September 11, 2020, 11:50:17 am by PRR |
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Pro Jr. Layout?
Started by revel |
9 Replies
13962 Views |
September 10, 2020, 01:23:22 pm by EL34 |
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Need advice: help me chart a course
Started by rockrink |
26 Replies
6211 Views |
September 09, 2020, 09:33:37 pm by bmccowan |
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6 Replies
4267 Views |
September 09, 2020, 07:33:25 pm by tubeswell |
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Looking for Guidance
Started by Jacob |
12 Replies
3934 Views |
September 09, 2020, 01:32:46 pm by Jacob |
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Fender Ramparte Issue
Started by ListerHayes |
5 Replies
2889 Views |
September 09, 2020, 12:54:51 pm by shooter |
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1 Replies
1957 Views |
September 09, 2020, 10:09:07 am by pdf64 |
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10 Replies
3080 Views |
September 09, 2020, 09:43:40 am by texwest |
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5 Replies
2662 Views |
September 08, 2020, 08:06:26 pm by Toxophilite |
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1 Replies
1854 Views |
September 08, 2020, 07:12:49 pm by PRR |
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