Welcome To the Hoffman Amplifiers Forum
March 11, 2026, 04:00:35 pm
Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 04:00:35 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| dogburn, passaloutre, Glenn and 96 Guests are viewing this board. | ||||
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Add adjustable bias to Hiwatt DR504
Started by eahudimac |
4 Replies
5625 Views |
December 06, 2019, 10:23:39 amby eahudimac |
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Tube reverb project
Started by Colas LeGrippa |
24 Replies
7953 Views |
December 05, 2019, 09:52:52 pm by sluckey |
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Lead on cap can smoking and sizzling
Started by dude |
4 Replies
3450 Views |
December 04, 2019, 09:52:23 pm by dude |
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3 channel preamp hum issues
Started by Captain chunkulus « 1 2 3 » |
114 Replies
31104 Views |
December 04, 2019, 01:56:43 pm by Captain chunkulus |
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Red-Nek Circuity PortaBuzz B-15
Started by bnwitt |
4 Replies
2919 Views |
December 04, 2019, 01:38:52 pm by RWood |
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Vox AC-15 build reverb question
Started by shaun |
10 Replies
5157 Views |
December 04, 2019, 01:16:05 pm by shaun |
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9 Replies
8326 Views |
December 04, 2019, 11:38:21 am by kagliostro |
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2 Replies
3181 Views |
December 03, 2019, 11:16:45 pm by 1blueheron |
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Lacing turret board and RF interference
Started by mebond11 |
2 Replies
2606 Views |
December 03, 2019, 08:02:08 pm by mebond11 |
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Hoffman AB763 weak tremolo with 6L6GC's
Started by sam |
26 Replies
9331 Views |
December 03, 2019, 05:26:59 pm by sam |
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power reduction
Started by isaac_teller |
2 Replies
2364 Views |
December 03, 2019, 10:56:21 am by isaac_teller |
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Resistor wattage available
Started by dude |
8 Replies
3850 Views |
December 02, 2019, 08:40:03 pm by PRR |
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1990 red knob fender Twin
Started by nandrewjackson |
6 Replies
5075 Views |
December 02, 2019, 07:49:32 pm by nandrewjackson |
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Active FX loop for master volume?
Started by Big_Mike |
10 Replies
5409 Views |
December 02, 2019, 11:21:17 am by pdf64 |
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11 Replies
4522 Views |
December 02, 2019, 08:35:29 am by sluckey |
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Vox AC15 Tweed Deluxe hybrid w/ reverb schematic
Started by Opry Audio « 1 2 » |
63 Replies
19582 Views |
December 02, 2019, 01:07:11 am by Greg |
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2-ch hybryd ODS/ax84 P1/Superlite 18W
Started by adamG |
36 Replies
12740 Views |
November 28, 2019, 01:15:04 pm by shooter |
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Attitube G20
Started by big-ez |
10 Replies
6412 Views |
November 28, 2019, 10:27:20 am by shooter |
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Supro 88T Schematic / Power Xfmr Specs
Started by paulcblais |
5 Replies
4175 Views |
November 27, 2019, 07:31:07 pm by DummyLoad |
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25 Replies
11590 Views |
November 26, 2019, 06:26:49 pm by kagliostro |
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AO-43 Conversion schematic needed
Started by shaun |
22 Replies
10029 Views |
November 26, 2019, 04:32:41 pm by jojokeo |
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Voltage Doublers.........
Started by Jack_Hester |
20 Replies
10156 Views |
November 26, 2019, 03:04:05 pm by GEO62 |
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DSL - Master Volume Mod.. Buzz/Hum
Started by diddymix |
11 Replies
5173 Views |
November 26, 2019, 02:10:35 pm by jojokeo |
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'74 Twin Reverb Buzzing
Started by ChubeRules |
3 Replies
2755 Views |
November 26, 2019, 03:47:08 am by pdf64 |
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Hammond AO-44 OT ohm range?
Started by MWaldorf |
4 Replies
2538 Views |
November 25, 2019, 02:04:01 pm by MWaldorf |
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Hoffman 6v6
Started by Rockranger |
11 Replies
5123 Views |
November 25, 2019, 01:09:32 pm by Rockranger |
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Hoffman amps closing the month of December
Started by EL34 |
1 Replies
2532 Views |
November 25, 2019, 06:25:40 am by EL34 |
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Power transformer ratings
Started by Leevi |
3 Replies
2838 Views |
November 25, 2019, 06:00:14 am by kagliostro |
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1 Replies
2473 Views |
November 24, 2019, 02:21:21 pm by sluckey |
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Pro Junior - Hand Wired Mod Difficulty
Started by specialk13 |
12 Replies
6710 Views |
November 24, 2019, 01:58:28 pm by specialk13 |
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Another “quick” grounding question😀
Started by daveyajd |
2 Replies
2225 Views |
November 24, 2019, 12:14:18 pm by daveyajd |
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QQ about possible transformer ring
Started by munkeyboy |
5 Replies
3001 Views |
November 24, 2019, 10:54:35 am by munkeyboy |
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5 Replies
3046 Views |
November 23, 2019, 05:49:53 pm by DummyLoad |
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peavey 6505+ repair need some help
Started by nonoxxx |
13 Replies
5254 Views |
November 23, 2019, 03:22:07 pm by nonoxxx |
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53 Replies
16676 Views |
November 23, 2019, 01:15:38 am by munkeyboy |
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Trouble with new build... Bassman style
Started by Fiat_cc |
15 Replies
5379 Views |
November 21, 2019, 03:52:24 pm by Fiat_cc |
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Hammond marked EL84’s
Started by dude |
22 Replies
6789 Views |
November 21, 2019, 01:56:46 pm by shooter |
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2550x Troubleshooting
Started by joe14vf |
5 Replies
2908 Views |
November 21, 2019, 04:25:58 am by joe14vf |
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JCM800 Cathode Follower and Vhk ratings
Started by ECV02 |
10 Replies
5078 Views |
November 20, 2019, 12:11:31 pm by pdf64 |
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Twin Reverb Distortion
Started by JKRamsey1991 |
4 Replies
2676 Views |
November 20, 2019, 11:38:13 am by pdf64 |
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Heater Considerations for new build
Started by Opry Audio |
23 Replies
6126 Views |
November 20, 2019, 08:28:49 am by shooter |
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6B4G dedicated heater winding...
Started by Greg |
15 Replies
6726 Views |
November 19, 2019, 08:18:32 am by Greg |
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OT Input Impedance Question 5F2A build
Started by AHeck |
12 Replies
5702 Views |
November 18, 2019, 03:10:41 pm by PRR |
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Hoffman AB763 troubles
Started by gheorge77 |
13 Replies
4078 Views |
November 18, 2019, 08:05:58 am by gheorge77 |
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Dr. Z Maz 38 issue
Started by theundeadelvis |
9 Replies
3812 Views |
November 17, 2019, 12:45:18 pm by theundeadelvis |
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Gremlins
Started by fossilshark |
3 Replies
2725 Views |
November 15, 2019, 09:25:40 pm by fossilshark |
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3 Replies
2838 Views |
November 15, 2019, 06:56:22 pm by sluckey |
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EL34 bias way too high
Started by fossilshark |
10 Replies
6740 Views |
November 15, 2019, 04:59:06 pm by tubeswell |
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I was thinking of doing this
Started by Toxophilite |
7 Replies
3137 Views |
November 15, 2019, 08:37:02 am by sluckey |
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Tube Preamp pedal based on Orange Amp
Started by holthausen |
0 Replies
2996 Views |
November 14, 2019, 11:35:38 am by holthausen |
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