Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 04:45:22 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 04:45:22 pm | ||
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13 Replies
5136 Views |
August 05, 2022, 08:54:04 amby JZRepair |
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Preamp signal path switching
Started by dunner84 |
4 Replies
2471 Views |
August 04, 2022, 03:55:22 pm by CascoSieg |
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29 Replies
6192 Views |
August 04, 2022, 03:30:13 pm by shaun |
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5E3 PTs and OTs?
Started by Voxbox |
11 Replies
3583 Views |
August 04, 2022, 03:29:04 pm by Voxbox |
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2 Replies
2107 Views |
August 04, 2022, 05:48:44 am by Bieworm |
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1974 Model A Sunn Speaker Choices?
Started by plexi50 |
11 Replies
4436 Views |
August 03, 2022, 07:31:27 am by plexi50 |
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Tweed deluxe build
Started by Arry |
6 Replies
4200 Views |
August 02, 2022, 04:12:54 pm by bnwitt |
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Switched Input with relay.
Started by joesatch |
11 Replies
3233 Views |
August 02, 2022, 04:00:35 pm by Williamblake |
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Electrolytic bypass caps
Started by valvetones |
5 Replies
3056 Views |
August 02, 2022, 01:28:10 pm by shooter |
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23 Replies
5936 Views |
August 01, 2022, 07:17:09 pm by winterturtle |
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F&T variants
Started by joesatch |
14 Replies
3877 Views |
August 01, 2022, 04:32:38 pm by uki |
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Harmony H303 Hum and Static
Started by scstill |
18 Replies
4843 Views |
July 31, 2022, 10:43:30 pm by PRR |
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5Y3GT Filter capacitor
Started by dude |
13 Replies
5431 Views |
July 31, 2022, 09:03:35 pm by MrBreeze |
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Univox U1000 repair/modification help
Started by Lucaswaggle |
19 Replies
6108 Views |
July 31, 2022, 02:38:26 pm by PRR |
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Output transformer & choke location
Started by MrBreeze |
4 Replies
2801 Views |
July 31, 2022, 12:07:26 pm by dude |
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EH-150/185 build complete
Started by Jerry garrcia |
1 Replies
2231 Views |
July 29, 2022, 07:36:24 pm by bmccowan |
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37 Replies
7053 Views |
July 29, 2022, 10:18:58 am by Williamblake |
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x
Started by fenderguy81 |
10 Replies
2958 Views |
July 27, 2022, 07:07:29 am by Latole |
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Help with Supro 1960T
Started by Travis8 |
9 Replies
3055 Views |
July 27, 2022, 06:50:37 am by sluckey |
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29 Replies
6452 Views |
July 26, 2022, 08:25:31 pm by Apexelectric |
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6 Replies
3165 Views |
July 25, 2022, 10:44:21 pm by tubeswell |
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7 Replies
3265 Views |
July 25, 2022, 12:48:23 pm by pdf64 |
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Need reverb jack advice
Started by Lectroid |
11 Replies
3929 Views |
July 25, 2022, 11:19:32 am by Lectroid |
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V1 triodes question
Started by joesatch |
8 Replies
3244 Views |
July 24, 2022, 09:47:24 pm by thetragichero |
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PSA preamp tubes
Started by joesatch |
12 Replies
3386 Views |
July 24, 2022, 12:37:52 pm by pullshocks |
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15 Replies
9151 Views |
July 24, 2022, 10:04:42 am by tmknight |
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14 Replies
4464 Views |
July 23, 2022, 10:07:16 am by Platefire |
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6g4 Super Clone (mostly done)
Started by owen |
46 Replies
10925 Views |
July 22, 2022, 12:28:40 pm by owen |
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Simplify or remove tonestack?
Started by joesatch |
7 Replies
3109 Views |
July 22, 2022, 09:26:41 am by jordan86 |
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Lamington Reverb… a little more volume?
Started by chris s |
16 Replies
5480 Views |
July 21, 2022, 09:04:55 pm by chris s |
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HRD Preamp Plate Voltages - SOLVED
Started by bbmade |
7 Replies
2937 Views |
July 21, 2022, 12:05:48 pm by bbmade |
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Use of relay on input?
Started by joesatch |
8 Replies
3432 Views |
July 21, 2022, 11:40:52 am by sluckey |
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Troubleshooting noisy reverb
Started by winterturtle |
5 Replies
2537 Views |
July 21, 2022, 03:32:03 am by tubeswell |
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preamp layout with triodes
Started by joesatch |
3 Replies
2013 Views |
July 20, 2022, 11:05:03 am by joesatch |
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3 Replies
2486 Views |
July 20, 2022, 05:21:10 am by BlackCrowe604 |
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Crate Stealth 50 power issue
Started by navdave |
6 Replies
2943 Views |
July 20, 2022, 12:28:31 am by navdave |
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Rob Robinette's bias calculator
Started by dude |
14 Replies
5249 Views |
July 19, 2022, 09:03:35 pm by PRR |
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Negative Feedback Causing Oscillation?
Started by AHeck |
19 Replies
6268 Views |
July 18, 2022, 07:16:19 am by AHeck |
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Coupling caps 400v
Started by joesatch |
24 Replies
6242 Views |
July 17, 2022, 05:01:28 pm by sluckey |
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Speaker for 5E3 Kit?
Started by bbmade |
11 Replies
3665 Views |
July 17, 2022, 04:18:44 am by JB |
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18 Replies
4764 Views |
July 17, 2022, 02:41:57 am by kagliostro |
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Examples of high voltage relay
Started by CascoSieg |
5 Replies
2599 Views |
July 16, 2022, 08:03:38 pm by DummyLoad |
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Dual 50 Amp
Started by Big_Mike |
6 Replies
3154 Views |
July 16, 2022, 05:16:11 pm by Apexelectric |
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Supro 1688TN Power Section
Started by Vez |
12 Replies
3779 Views |
July 15, 2022, 08:17:38 pm by bmccowan |
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IEC connector location
Started by MrBreeze |
4 Replies
2463 Views |
July 15, 2022, 01:29:37 pm by MrBreeze |
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Chassis Material preferences
Started by MrBreeze |
11 Replies
3433 Views |
July 15, 2022, 07:13:17 am by sluckey |
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29 Replies
7111 Views |
July 14, 2022, 03:54:58 pm by HotBluePlates |
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Electronics theory question
Started by nandrewjackson |
9 Replies
3957 Views |
July 14, 2022, 04:09:28 am by shooter |
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59 Replies
17803 Views |
July 13, 2022, 05:59:25 pm by cspar |
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preamp cathodes to ground location
Started by joesatch |
3 Replies
2379 Views |
July 13, 2022, 04:45:49 pm by tubeswell |
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