Welcome To the Hoffman Amplifiers Forum
April 26, 2026, 11:06:29 am
Welcome To the Hoffman Amplifiers ForumApril 26, 2026, 11:06:29 am | ||
| Subject / Started by | Replies / Views | Last post  |
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SF Vibrolux redplating, losing voltage
Started by AxeAmpTN |
11 Replies
5418 Views |
December 26, 2019, 09:37:48 amby AxeAmpTN |
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Split Plate Load LTPI el84
Started by cboysen |
0 Replies
2729 Views |
December 25, 2019, 07:51:02 am by cboysen |
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Filter Capacitor Tolerances
Started by jaster55 |
6 Replies
3850 Views |
December 24, 2019, 10:11:12 am by sluckey |
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HV filtering using stby switch
Started by dude |
28 Replies
7466 Views |
December 23, 2019, 10:04:29 am by Colas LeGrippa |
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5 Replies
3941 Views |
December 22, 2019, 11:32:43 pm by TubeGeek |
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13 Replies
5538 Views |
December 22, 2019, 06:45:49 pm by shooter |
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OT impedance question
Started by daveyajd |
10 Replies
5130 Views |
December 21, 2019, 03:23:46 am by kagliostro |
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Bias balance pot not functioning
Started by playindabluz |
7 Replies
4279 Views |
December 20, 2019, 12:32:20 pm by DummyLoad |
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13 Replies
6350 Views |
December 19, 2019, 01:33:03 pm by DummyLoad |
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Reverb feeding back
Started by Fiat_cc |
4 Replies
3537 Views |
December 19, 2019, 06:58:12 am by sluckey |
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New Princeton Reverb build PI issue
Started by Apexelectric |
45 Replies
13464 Views |
December 18, 2019, 09:23:36 pm by Apexelectric |
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Firefly Power Amp Help
Started by johngovan |
9 Replies
5122 Views |
December 18, 2019, 06:42:34 pm by johngovan |
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67 Replies
20655 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
5681 Views |
December 16, 2019, 03:30:01 pm by guitylerham |
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10 Replies
5856 Views |
December 16, 2019, 02:41:26 pm by mresistor |
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Minimum gr1 resistance
Started by Colas LeGrippa |
7 Replies
3938 Views |
December 15, 2019, 11:50:50 pm by kagliostro |
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10 Replies
5108 Views |
December 15, 2019, 11:04:17 pm by glass54 |
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Cap foil direction
Started by daveyajd |
13 Replies
5897 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
6453 Views |
December 14, 2019, 04:48:41 pm by kagliostro |
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75 Replies
21996 Views |
December 14, 2019, 11:36:19 am by Jennings |
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One chassis ground or two?
Started by tony321owen |
16 Replies
8521 Views |
December 14, 2019, 11:35:40 am by jjasilli |
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4 Replies
4349 Views |
December 13, 2019, 05:35:05 pm by kagliostro |
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9 Replies
4925 Views |
December 12, 2019, 05:31:50 pm by Backwoods Joe |
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51 Replies
16609 Views |
December 12, 2019, 04:51:12 pm by Fiat_cc |
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Grid bias w/tremolo?
Started by yorgle |
24 Replies
9443 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
3731 Views |
December 11, 2019, 09:49:59 pm by nandrewjackson |
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21 Replies
8098 Views |
December 11, 2019, 09:31:31 am by sluckey |
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10 Replies
6173 Views |
December 11, 2019, 04:41:12 am by pdf64 |
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Cathode bypass cap orientation question
Started by Tapsnap |
12 Replies
6474 Views |
December 11, 2019, 04:31:01 am by pdf64 |
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11 Replies
6959 Views |
December 10, 2019, 04:15:41 pm by cubis |
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11 Replies
4287 Views |
December 10, 2019, 10:26:59 am by centervolume |
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Grounding 6V6 Plexi
Started by leegold |
9 Replies
4696 Views |
December 09, 2019, 08:14:35 pm by glass54 |
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Gibson EH-185 6J7 version
Started by centervolume |
40 Replies
12080 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
3096 Views |
December 09, 2019, 12:46:04 pm by mebond11 |
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2 x kt88 power amp
Started by AxelKay |
36 Replies
14898 Views |
December 09, 2019, 11:23:30 am by 66Strat |
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12 Replies
6211 Views |
December 09, 2019, 06:24:11 am by sluckey |
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advice on dumble clone
Started by vampwizzard |
4 Replies
3840 Views |
December 08, 2019, 08:40:58 pm by sluckey |
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8 Replies
5457 Views |
December 08, 2019, 07:58:46 pm by kagliostro |
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14 Replies
8213 Views |
December 07, 2019, 06:25:33 pm by jjasilli |
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Gauge wire on PT
Started by dude |
6 Replies
3169 Views |
December 06, 2019, 07:42:39 pm by dude |
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Quick Tremor-lator Question
Started by yorgle |
2 Replies
2990 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
6140 Views |
December 06, 2019, 10:23:39 am by eahudimac |
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Tube reverb project
Started by Colas LeGrippa |
24 Replies
8274 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
3849 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
33387 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
3199 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
5537 Views |
December 04, 2019, 01:16:05 pm by shaun |
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9 Replies
8656 Views |
December 04, 2019, 11:38:21 am by kagliostro |
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2 Replies
3458 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
2860 Views |
December 03, 2019, 08:02:08 pm by mebond11 |
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