Welcome To the Hoffman Amplifiers Forum
January 24, 2026, 05:20:18 am
Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 05:20:18 am | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 39 Guests are viewing this board. | ||||
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What's Up With My Plate Voltage?
Started by dankinzelman |
31 Replies
7444 Views |
March 09, 2021, 05:03:49 pmby PRR |
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Princeton Reverb hum.. help?
Started by Opry Audio |
12 Replies
4980 Views |
March 09, 2021, 01:20:55 pm by Opry Audio |
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Help understanding schematic
Started by munkeyboy |
14 Replies
5520 Views |
March 09, 2021, 12:54:51 pm by PRR |
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Rating ecaps.
Started by Mike_J |
7 Replies
4059 Views |
March 09, 2021, 11:47:20 am by PRR |
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5 Replies
3606 Views |
March 09, 2021, 11:05:30 am by wittyjeff |
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24 Replies
12675 Views |
March 09, 2021, 08:43:39 am by dragonworks |
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Preamp noise - repairable?
Started by jordan86 |
11 Replies
4474 Views |
March 09, 2021, 08:23:41 am by jordan86 |
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Marshall 1987s hum.
Started by Rich_C |
12 Replies
4616 Views |
March 09, 2021, 03:03:09 am by Tone Junkie |
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Polarity wiring filaments
Started by dude |
8 Replies
5435 Views |
March 08, 2021, 09:20:33 pm by Sonny ReVerb |
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3 Replies
2591 Views |
March 08, 2021, 05:47:57 pm by Mike_J |
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Volume and Tone Pot Ranges
Started by Ghetto_Soundwave |
4 Replies
2566 Views |
March 08, 2021, 01:12:06 pm by Ghetto_Soundwave |
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24 Replies
7267 Views |
March 08, 2021, 11:49:20 am by pgussler |
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5 Replies
3283 Views |
March 07, 2021, 01:39:18 pm by PharmRock |
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2 Replies
2594 Views |
March 07, 2021, 12:52:17 pm by luthierwnc |
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25 Replies
8520 Views |
March 07, 2021, 08:28:55 am by RadioComm |
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2 Replies
3075 Views |
March 07, 2021, 04:38:49 am by pdf64 |
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0 Replies
2380 Views |
March 07, 2021, 03:42:33 am by Latole |
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45 Replies
12438 Views |
March 06, 2021, 09:18:02 pm by acheld |
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Super Champ X2 => RR763
Started by Jacob |
2 Replies
2895 Views |
March 06, 2021, 10:14:31 am by sluckey |
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How hot can EL84s be biased?
Started by Mason |
12 Replies
8790 Views |
March 06, 2021, 08:03:25 am by sluckey |
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3 Replies
2916 Views |
March 06, 2021, 02:01:12 am by silverfox |
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27 Replies
8642 Views |
March 05, 2021, 06:36:45 pm by Jatchley |
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Poweramp Layout Xfmr Location questions
Started by markmalin |
6 Replies
3220 Views |
March 05, 2021, 02:52:15 pm by markmalin |
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Epiphone comet ea-rvt32 ot
Started by Simmie |
3 Replies
2866 Views |
March 05, 2021, 02:46:50 pm by Simmie |
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72 Replies
18352 Views |
March 04, 2021, 11:53:28 pm by proaudioguy |
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6v6 Plexi resistor value query
Started by Mehfuzhoss |
14 Replies
4891 Views |
March 04, 2021, 07:30:42 pm by PRR |
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Adding Filter Nodes?
Started by dankinzelman |
16 Replies
5970 Views |
March 04, 2021, 04:52:56 pm by dankinzelman |
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5F1 No Sound Problem-It just quit!
Started by wsscott |
26 Replies
8325 Views |
March 04, 2021, 04:52:01 pm by wsscott |
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Randall RM-100 Impedance switch
Started by JustMike |
3 Replies
3059 Views |
March 04, 2021, 12:31:37 pm by EL34 |
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1 Replies
2913 Views |
March 04, 2021, 10:14:41 am by PharmRock |
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14 Replies
5820 Views |
March 04, 2021, 03:08:47 am by Latole |
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Where to ground the first filter stage.
Started by Mike_J |
23 Replies
6790 Views |
March 03, 2021, 09:02:18 pm by tubeswell |
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Choosing Power Transformers
Started by acheld |
7 Replies
4484 Views |
March 03, 2021, 08:17:04 pm by acheld |
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0 Replies
2240 Views |
March 03, 2021, 05:54:41 pm by Mike_J |
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1977 Princeton Reverb PT failure?
Started by wsscott |
23 Replies
5831 Views |
March 03, 2021, 05:13:41 pm by wsscott |
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6 Replies
3402 Views |
March 03, 2021, 03:01:40 pm by Mike_J |
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New most terrible job ever.
Started by Mike_J |
9 Replies
4181 Views |
March 03, 2021, 06:12:20 am by Mike_J |
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14 Replies
3894 Views |
March 03, 2021, 12:47:11 am by d95err |
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Post PI Master Volume Coupling Cap
Started by scstill |
2 Replies
2304 Views |
March 02, 2021, 04:06:49 pm by thetragichero |
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B&H Filmosound 626 amp
Started by Zonnebloem |
2 Replies
2599 Views |
March 02, 2021, 03:56:08 pm by Zonnebloem |
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2 Cathode Followers on the same tube?
Started by dsmith9 |
5 Replies
2905 Views |
March 02, 2021, 03:03:30 pm by tubeswell |
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Reverb pedal jack
Started by dude |
6 Replies
3727 Views |
March 02, 2021, 01:08:39 pm by sluckey |
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Doug's shielded wire
Started by munkeyboy |
13 Replies
6023 Views |
March 02, 2021, 09:30:21 am by EL34 |
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67 Replies
15301 Views |
March 01, 2021, 09:48:28 pm by wittyjeff |
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4 Replies
2587 Views |
March 01, 2021, 09:00:31 pm by walkman |
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14 Replies
6186 Views |
March 01, 2021, 03:25:28 pm by gitarzysta |
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2 Replies
3962 Views |
March 01, 2021, 03:10:16 pm by sluckey |
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New Amp Introduction—Brown Junior
Started by brewdude |
7 Replies
2887 Views |
February 28, 2021, 09:17:05 pm by wittyjeff |
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Global Negitive Feedback with Top Cut?
Started by DuaneOh |
6 Replies
3448 Views |
February 28, 2021, 09:14:02 pm by wittyjeff |
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6K6GT push pull limits
Started by brewdude |
17 Replies
5722 Views |
February 28, 2021, 06:24:30 pm by brewdude |
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