Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 10:31:17 am
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 10:31:17 am | ||
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| Saturnine and 26 Guests are viewing this board. | ||||
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7 Replies
9784 Views |
July 24, 2012, 11:31:45 amby tubeswell |
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Question on Biasing a Bogen amp
Started by Seegs |
8 Replies
6508 Views |
July 24, 2012, 09:23:50 am by John |
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Wire gauge question
Started by bartman |
4 Replies
4699 Views |
July 24, 2012, 07:13:56 am by archaos |
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2 Replies
4696 Views |
July 23, 2012, 09:31:01 pm by SoundmasterG |
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Am I biasing this right?
Started by Tyrannocaster |
3 Replies
4097 Views |
July 23, 2012, 12:23:09 pm by phsyconoodler |
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VVR : bad experience ?
Started by Colas LeGrippa |
4 Replies
4838 Views |
July 23, 2012, 01:06:57 am by The_Gaz |
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6l6 vs el34
Started by dscottguitars |
12 Replies
18946 Views |
July 22, 2012, 11:54:16 am by dscottguitars |
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Bizarre OPT reaction
Started by Colas LeGrippa |
19 Replies
9259 Views |
July 22, 2012, 10:32:23 am by Colas LeGrippa |
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Adding some switchable NFB
Started by Tyrannocaster |
9 Replies
8403 Views |
July 22, 2012, 05:59:36 am by Tyrannocaster |
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One input, one jack, Hi/Low?
Started by Tyrannocaster |
17 Replies
13128 Views |
July 22, 2012, 05:55:41 am by Tyrannocaster |
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Chassis tips
Started by jeff |
13 Replies
6926 Views |
July 21, 2012, 08:32:25 pm by John |
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oh lordy, another bogen hack...
Started by DummyLoad |
7 Replies
6328 Views |
July 21, 2012, 08:27:31 pm by DummyLoad |
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6 Replies
5278 Views |
July 21, 2012, 01:55:52 pm by m3moser |
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Hum when Bass pot is turned up
Started by punkykatt |
5 Replies
5914 Views |
July 21, 2012, 09:54:10 am by punkykatt |
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Tube Active Tone Stack??
Started by TIMBO |
9 Replies
16528 Views |
July 21, 2012, 04:51:14 am by kagliostro |
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3 Replies
4468 Views |
July 20, 2012, 09:09:23 pm by Willabe |
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Talk to me about OVERDRIVE
Started by SILVERGUN |
41 Replies
16780 Views |
July 20, 2012, 01:48:09 pm by jojokeo |
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1 Replies
4035 Views |
July 20, 2012, 07:31:35 am by Tyrannocaster |
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4 Replies
4688 Views |
July 19, 2012, 11:48:37 pm by proaudioguy |
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1996 Hotrod Deluxe Mods / WOWZA!
Started by plexi50 |
28 Replies
15845 Views |
July 19, 2012, 08:23:00 pm by Colas LeGrippa |
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Output transformer Impedance.
Started by Underwood |
5 Replies
10267 Views |
July 19, 2012, 06:34:55 pm by Tyrannocaster |
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0 Replies
3708 Views |
July 19, 2012, 05:30:35 pm by kagliostro |
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treble cut on a switch?
Started by Quatro |
11 Replies
6765 Views |
July 19, 2012, 09:13:07 am by thelonious |
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Noise from SE EL84 Amp
Started by Platefire |
18 Replies
9357 Views |
July 19, 2012, 02:15:05 am by Platefire |
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Need help with fresh build....
Started by SILVERGUN |
26 Replies
10113 Views |
July 18, 2012, 02:34:51 pm by SILVERGUN |
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8 Replies
8058 Views |
July 18, 2012, 08:35:32 am by kagliostro |
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13 Replies
13437 Views |
July 17, 2012, 11:24:48 pm by Quatro |
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3 Replies
6032 Views |
July 17, 2012, 03:42:00 pm by sluckey |
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Fender Super Twin Reverb Ugly distortion....
Started by BigE |
2 Replies
5057 Views |
July 17, 2012, 06:12:41 am by LooseChange |
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Why do power tubes degrade?
Started by spacelabstudio |
17 Replies
11140 Views |
July 16, 2012, 10:02:32 pm by jjasilli |
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MOVED: UNBELIEVABLE? I say NO!
Started by tubenit |
0 Replies
3667 Views |
July 16, 2012, 05:32:24 pm by tubenit |
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Power supply for battery amp
Started by Leevi |
2 Replies
4422 Views |
July 16, 2012, 03:00:37 pm by Leevi |
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11 Replies
15425 Views |
July 15, 2012, 09:42:32 pm by Ed_Chambley |
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Single Ended EL84 Ideas
Started by gtrbryan |
2 Replies
10598 Views |
July 15, 2012, 09:16:54 pm by John |
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60hz hum in Ampeg SVP preamp
Started by six el six |
5 Replies
7863 Views |
July 15, 2012, 07:57:37 pm by six el six |
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here is my latest build
Started by phsyconoodler |
14 Replies
6999 Views |
July 15, 2012, 06:57:05 pm by stingray_65 |
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.1 Cap for presence .
Started by Tone Junkie |
4 Replies
5311 Views |
July 15, 2012, 01:53:03 pm by Tone Junkie |
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6AU6 screen fed by voltage divider?
Started by jeff |
17 Replies
12479 Views |
July 14, 2012, 04:23:23 pm by jeff |
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7 Replies
8545 Views |
July 14, 2012, 12:18:08 am by m2dad |
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HAMMOND 1640 SEA
Started by Colas LeGrippa |
8 Replies
6250 Views |
July 13, 2012, 10:35:01 am by Colas LeGrippa |
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70's Sonic (pa) Bass amp
Started by bbirling |
4 Replies
5492 Views |
July 12, 2012, 05:19:35 pm by HotBluePlates |
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5Y3 rectifiers on a hombrew jcm 800 2204
Started by garyboy |
2 Replies
4779 Views |
July 12, 2012, 01:13:09 pm by garyboy |
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5 Replies
5905 Views |
July 12, 2012, 12:36:10 am by olgoat |
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help needed with pt
Started by Bugman3183 |
16 Replies
8248 Views |
July 11, 2012, 10:26:02 pm by HotBluePlates |
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Filter Cap Resistors
Started by bakerlite |
4 Replies
5166 Views |
July 11, 2012, 10:18:33 pm by HotBluePlates |
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Tubes for Fender Vibrato / Tremolo
Started by mresistor |
3 Replies
4488 Views |
July 11, 2012, 10:14:23 pm by HotBluePlates |
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Question about filaments grounding
Started by mresistor |
9 Replies
7878 Views |
July 11, 2012, 09:58:58 pm by HotBluePlates |
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high voltages on input tubes
Started by ElliottKoch |
15 Replies
7108 Views |
July 11, 2012, 09:47:40 pm by ElliottKoch |
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PT and OT wiring question. Best practices.
Started by olgoat |
6 Replies
5438 Views |
July 11, 2012, 08:23:12 pm by jojokeo |
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Voltage on AB763 tremelo tube
Started by six el six |
3 Replies
4093 Views |
July 11, 2012, 04:15:55 pm by six el six |
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