Welcome To the Hoffman Amplifiers Forum
January 24, 2026, 05:20:31 am
Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 05:20:31 am | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 34 Guests are viewing this board. | ||||
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New Princeton Reverb build PI issue
Started by Apexelectric |
45 Replies
11922 Views |
December 18, 2019, 09:23:36 pmby Apexelectric |
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Firefly Power Amp Help
Started by johngovan |
9 Replies
4343 Views |
December 18, 2019, 06:42:34 pm by johngovan |
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67 Replies
17382 Views |
December 17, 2019, 06:15:08 am by shooter |
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Preamp Bias vary Trem in AB763?
Started by guitylerham |
9 Replies
4694 Views |
December 16, 2019, 03:30:01 pm by guitylerham |
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10 Replies
5023 Views |
December 16, 2019, 02:41:26 pm by mresistor |
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Minimum gr1 resistance
Started by Colas LeGrippa |
7 Replies
3173 Views |
December 15, 2019, 11:50:50 pm by kagliostro |
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10 Replies
4344 Views |
December 15, 2019, 11:04:17 pm by glass54 |
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Cap foil direction
Started by daveyajd |
13 Replies
4933 Views |
December 15, 2019, 09:21:16 am by mresistor |
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Bias for ECC99 Mini Vox AC30?
Started by roseblood11 |
9 Replies
5467 Views |
December 14, 2019, 04:48:41 pm by kagliostro |
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75 Replies
19694 Views |
December 14, 2019, 11:36:19 am by Jennings |
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One chassis ground or two?
Started by tony321owen |
16 Replies
7435 Views |
December 14, 2019, 11:35:40 am by jjasilli |
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4 Replies
3701 Views |
December 13, 2019, 05:35:05 pm by kagliostro |
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9 Replies
4192 Views |
December 12, 2019, 05:31:50 pm by Backwoods Joe |
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51 Replies
14466 Views |
December 12, 2019, 04:51:12 pm by Fiat_cc |
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Grid bias w/tremolo?
Started by yorgle |
24 Replies
8303 Views |
December 12, 2019, 03:27:15 pm by yorgle |
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Marshall JCM800 50MV w/ reverb repair
Started by Opry Audio |
4 Replies
2976 Views |
December 11, 2019, 09:49:59 pm by nandrewjackson |
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21 Replies
6915 Views |
December 11, 2019, 09:31:31 am by sluckey |
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10 Replies
5199 Views |
December 11, 2019, 04:41:12 am by pdf64 |
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Cathode bypass cap orientation question
Started by Tapsnap |
12 Replies
5643 Views |
December 11, 2019, 04:31:01 am by pdf64 |
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11 Replies
6249 Views |
December 10, 2019, 04:15:41 pm by cubis |
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11 Replies
3749 Views |
December 10, 2019, 10:26:59 am by centervolume |
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Grounding 6V6 Plexi
Started by leegold |
9 Replies
3917 Views |
December 09, 2019, 08:14:35 pm by glass54 |
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Gibson EH-185 6J7 version
Started by centervolume |
40 Replies
10890 Views |
December 09, 2019, 02:46:02 pm by bmccowan |
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Wiring 5e3 combo to use as a speaker cab
Started by mebond11 |
3 Replies
2523 Views |
December 09, 2019, 12:46:04 pm by mebond11 |
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2 x kt88 power amp
Started by AxelKay |
36 Replies
13031 Views |
December 09, 2019, 11:23:30 am by 66Strat |
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12 Replies
5288 Views |
December 09, 2019, 06:24:11 am by sluckey |
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advice on dumble clone
Started by vampwizzard |
4 Replies
3195 Views |
December 08, 2019, 08:40:58 pm by sluckey |
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8 Replies
4736 Views |
December 08, 2019, 07:58:46 pm by kagliostro |
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14 Replies
7345 Views |
December 07, 2019, 06:25:33 pm by jjasilli |
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Gauge wire on PT
Started by dude |
6 Replies
2672 Views |
December 06, 2019, 07:42:39 pm by dude |
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Quick Tremor-lator Question
Started by yorgle |
2 Replies
2432 Views |
December 06, 2019, 01:41:44 pm by yorgle |
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Add adjustable bias to Hiwatt DR504
Started by eahudimac |
4 Replies
5191 Views |
December 06, 2019, 10:23:39 am by eahudimac |
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Tube reverb project
Started by Colas LeGrippa |
24 Replies
7665 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
2988 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
28781 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
2693 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
4855 Views |
December 04, 2019, 01:16:05 pm by shaun |
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9 Replies
8016 Views |
December 04, 2019, 11:38:21 am by kagliostro |
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2 Replies
2912 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
2370 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
8862 Views |
December 03, 2019, 05:26:59 pm by sam |
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power reduction
Started by isaac_teller |
2 Replies
2205 Views |
December 03, 2019, 10:56:21 am by isaac_teller |
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Resistor wattage available
Started by dude |
8 Replies
3567 Views |
December 02, 2019, 08:40:03 pm by PRR |
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1990 red knob fender Twin
Started by nandrewjackson |
6 Replies
4814 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
5120 Views |
December 02, 2019, 11:21:17 am by pdf64 |
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11 Replies
4277 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
18424 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
12071 Views |
November 28, 2019, 01:15:04 pm by shooter |
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Attitube G20
Started by big-ez |
10 Replies
6031 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
3958 Views |
November 27, 2019, 07:31:07 pm by DummyLoad |
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