Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:38:56 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:38:56 am | ||
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| ac427v and 28 Guests are viewing this board. | ||||
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Calculating cathode bias resistor
Started by dwinstonwood |
3 Replies
2636 Views |
April 27, 2023, 04:06:41 pmby HotBluePlates |
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14 Replies
4634 Views |
April 27, 2023, 03:45:05 pm by Garrett335 |
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Dual 50 Plexi/JCM 800
Started by purpletele « 1 2 3 4 » |
159 Replies
44706 Views |
April 27, 2023, 11:56:18 am by KeithR |
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32 Replies
8147 Views |
April 27, 2023, 07:06:06 am by dwinstonwood |
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Laney Klipp "Fuzz" circuit
Started by Balticnoiseforge |
0 Replies
2366 Views |
April 26, 2023, 01:09:31 am by Balticnoiseforge |
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10 Replies
2663 Views |
April 25, 2023, 09:25:21 pm by mresistor |
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Build Report: Tubenit's SoLowWatt CPI
Started by boodle |
10 Replies
2976 Views |
April 25, 2023, 07:33:55 pm by bmccowan |
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4k vs 5k transformer impedance
Started by fossilshark |
5 Replies
2517 Views |
April 25, 2023, 12:47:46 pm by jordan86 |
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58 Replies
17009 Views |
April 24, 2023, 10:31:30 pm by AmberB |
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4 Replies
2127 Views |
April 24, 2023, 09:03:12 am by tylerpenn |
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Regulated b+ preamp
Started by mattiambro |
19 Replies
4168 Views |
April 22, 2023, 02:42:24 pm by PRR |
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Adding a gain stage to BF Bassman?
Started by Yoda |
36 Replies
10246 Views |
April 22, 2023, 12:04:42 pm by dwinstonwood |
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6BM8 capacitor driven reverb
Started by walkman |
22 Replies
4444 Views |
April 20, 2023, 04:14:13 am by walkman |
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23 Replies
3846 Views |
April 19, 2023, 10:31:54 am by 72Blazer |
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Triumph Audio Oscillator - Schematic?
Started by bankeny |
4 Replies
1911 Views |
April 19, 2023, 09:58:19 am by Lectroid |
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Traynor YVM-1 Plate Voltage Sag Issue
Started by soulsonic |
12 Replies
3168 Views |
April 19, 2023, 08:51:22 am by soulsonic |
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Second input on Monoprice/Stage Right amp
Started by coug64 |
4 Replies
2202 Views |
April 18, 2023, 01:53:31 am by rake |
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11 Replies
6216 Views |
April 17, 2023, 04:17:47 pm by Jerry garrcia |
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DC Heater Options
Started by TenderTendon |
32 Replies
6393 Views |
April 17, 2023, 03:47:48 pm by aaelectronics |
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schematic error?
Started by joesatch |
1 Replies
1731 Views |
April 17, 2023, 02:39:53 pm by PRR |
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location of PT in BF Champ
Started by dude |
2 Replies
1811 Views |
April 16, 2023, 03:45:56 pm by dude |
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3 Replies
1908 Views |
April 16, 2023, 12:34:55 pm by joesatch |
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15 Replies
3460 Views |
April 16, 2023, 11:49:24 am by tubeswell |
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5E3 Build Hum
Started by maxupp |
26 Replies
4987 Views |
April 16, 2023, 07:40:04 am by bmccowan |
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Ideas to mod one of my amps.
Started by Mike_J |
3 Replies
2034 Views |
April 16, 2023, 12:37:25 am by nandrewjackson |
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53 Replies
8163 Views |
April 15, 2023, 07:15:41 pm by rafe |
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33 Replies
4958 Views |
April 15, 2023, 01:33:42 pm by 72Blazer |
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72 fender deluxe
Started by rafe |
24 Replies
4294 Views |
April 14, 2023, 09:49:23 pm by rafe |
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Lowering B+
Started by phsyconoodler |
11 Replies
3016 Views |
April 14, 2023, 04:15:32 pm by RadioComm |
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LBL on Variac ?
Started by mresistor |
7 Replies
2442 Views |
April 14, 2023, 11:21:17 am by mresistor |
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AC15CC1 opinion on PT
Started by mresistor |
16 Replies
3830 Views |
April 14, 2023, 08:27:09 am by mresistor |
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4 Replies
2004 Views |
April 13, 2023, 07:35:09 am by jackplug1 |
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Duplicate PT Secondary for Rectifier Only
Started by anrque |
4 Replies
1916 Views |
April 12, 2023, 08:18:19 pm by anrque |
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8 Replies
2331 Views |
April 12, 2023, 07:18:50 pm by tubeswell |
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Ghosting distortion with overdrive
Started by Ronquest |
6 Replies
2234 Views |
April 12, 2023, 06:53:44 pm by PRR |
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Crate V18 conversion
Started by jeff |
17 Replies
3905 Views |
April 12, 2023, 06:45:08 pm by PRR |
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Epiphone Valve Jr repair question
Started by Gonzo1999 |
12 Replies
3234 Views |
April 12, 2023, 06:30:49 pm by vintasonic |
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30 Replies
14553 Views |
April 11, 2023, 03:12:51 pm by jeff |
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Ampeg ReverberRocket R-12-R
Started by W5FH |
5 Replies
2502 Views |
April 11, 2023, 09:07:33 am by W5FH |
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Who manufactures TAD tubes?
Started by vintasonic |
3 Replies
2592 Views |
April 11, 2023, 01:37:48 am by tubeswell |
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Unused 100V, 230V, 240V taps
Started by jeff |
5 Replies
1975 Views |
April 10, 2023, 11:59:29 pm by DummyLoad |
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Blackstar Amps
Started by Platefire |
12 Replies
3274 Views |
April 09, 2023, 06:07:50 pm by Platefire |
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7 Replies
2952 Views |
April 09, 2023, 11:06:30 am by jackplug1 |
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fx loop worth implementing?
Started by BrainDeadAmps |
8 Replies
2728 Views |
April 09, 2023, 08:58:37 am by jeff |
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15 Replies
3425 Views |
April 09, 2023, 07:13:30 am by jeff |
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Master Volume
Started by W5FH |
10 Replies
3870 Views |
April 08, 2023, 07:21:57 pm by W5FH |
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EL84 Free Pins As Tie Points?
Started by sluckey |
15 Replies
10817 Views |
April 08, 2023, 06:05:44 pm by PRR |
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Finished Weber's Smokin Joe I Build
Started by RadioComm |
5 Replies
2901 Views |
April 08, 2023, 04:48:57 pm by bmccowan |
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Laney VC30 Help!!!!!
Started by Travis8 |
13 Replies
4060 Views |
April 08, 2023, 04:53:56 am by Travis8 |
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8 Replies
2356 Views |
April 07, 2023, 11:46:35 pm by jeff |
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