Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 09:22:27 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 09:22:27 am | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 21 Guests are viewing this board. | ||||
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Tweed deluxe build
Started by Arry |
6 Replies
3394 Views |
August 02, 2022, 04:12:54 pmby bnwitt |
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Switched Input with relay.
Started by joesatch |
11 Replies
2670 Views |
August 02, 2022, 04:00:35 pm by Williamblake |
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Electrolytic bypass caps
Started by valvetones |
5 Replies
2461 Views |
August 02, 2022, 01:28:10 pm by shooter |
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23 Replies
4719 Views |
August 01, 2022, 07:17:09 pm by winterturtle |
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F&T variants
Started by joesatch |
14 Replies
3215 Views |
August 01, 2022, 04:32:38 pm by uki |
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Harmony H303 Hum and Static
Started by scstill |
18 Replies
4070 Views |
July 31, 2022, 10:43:30 pm by PRR |
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5Y3GT Filter capacitor
Started by dude |
13 Replies
4518 Views |
July 31, 2022, 09:03:35 pm by MrBreeze |
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Univox U1000 repair/modification help
Started by Lucaswaggle |
19 Replies
4945 Views |
July 31, 2022, 02:38:26 pm by PRR |
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Output transformer & choke location
Started by MrBreeze |
4 Replies
2321 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
1863 Views |
July 29, 2022, 07:36:24 pm by bmccowan |
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37 Replies
5610 Views |
July 29, 2022, 10:18:58 am by Williamblake |
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x
Started by fenderguy81 |
10 Replies
2491 Views |
July 27, 2022, 07:07:29 am by Latole |
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Help with Supro 1960T
Started by Travis8 |
9 Replies
2476 Views |
July 27, 2022, 06:50:37 am by sluckey |
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29 Replies
5170 Views |
July 26, 2022, 08:25:31 pm by Apexelectric |
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6 Replies
2540 Views |
July 25, 2022, 10:44:21 pm by tubeswell |
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7 Replies
2798 Views |
July 25, 2022, 12:48:23 pm by pdf64 |
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Need reverb jack advice
Started by Lectroid |
11 Replies
3246 Views |
July 25, 2022, 11:19:32 am by Lectroid |
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V1 triodes question
Started by joesatch |
8 Replies
2656 Views |
July 24, 2022, 09:47:24 pm by thetragichero |
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PSA preamp tubes
Started by joesatch |
12 Replies
2864 Views |
July 24, 2022, 12:37:52 pm by pullshocks |
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15 Replies
8335 Views |
July 24, 2022, 10:04:42 am by tmknight |
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14 Replies
3821 Views |
July 23, 2022, 10:07:16 am by Platefire |
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6g4 Super Clone (mostly done)
Started by owen |
46 Replies
9173 Views |
July 22, 2022, 12:28:40 pm by owen |
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Simplify or remove tonestack?
Started by joesatch |
7 Replies
2568 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
4566 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
2550 Views |
July 21, 2022, 12:05:48 pm by bbmade |
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Use of relay on input?
Started by joesatch |
8 Replies
2926 Views |
July 21, 2022, 11:40:52 am by sluckey |
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Troubleshooting noisy reverb
Started by winterturtle |
5 Replies
2087 Views |
July 21, 2022, 03:32:03 am by tubeswell |
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preamp layout with triodes
Started by joesatch |
3 Replies
1738 Views |
July 20, 2022, 11:05:03 am by joesatch |
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3 Replies
2127 Views |
July 20, 2022, 05:21:10 am by BlackCrowe604 |
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Crate Stealth 50 power issue
Started by navdave |
6 Replies
2341 Views |
July 20, 2022, 12:28:31 am by navdave |
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Rob Robinette's bias calculator
Started by dude |
14 Replies
4188 Views |
July 19, 2022, 09:03:35 pm by PRR |
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Negative Feedback Causing Oscillation?
Started by AHeck |
19 Replies
5100 Views |
July 18, 2022, 07:16:19 am by AHeck |
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Coupling caps 400v
Started by joesatch |
24 Replies
5158 Views |
July 17, 2022, 05:01:28 pm by sluckey |
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Speaker for 5E3 Kit?
Started by bbmade |
11 Replies
3004 Views |
July 17, 2022, 04:18:44 am by JB |
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18 Replies
4066 Views |
July 17, 2022, 02:41:57 am by kagliostro |
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Examples of high voltage relay
Started by CascoSieg |
5 Replies
2092 Views |
July 16, 2022, 08:03:38 pm by DummyLoad |
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Dual 50 Amp
Started by Big_Mike |
6 Replies
2500 Views |
July 16, 2022, 05:16:11 pm by Apexelectric |
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Supro 1688TN Power Section
Started by Vez |
12 Replies
3243 Views |
July 15, 2022, 08:17:38 pm by bmccowan |
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IEC connector location
Started by MrBreeze |
4 Replies
1972 Views |
July 15, 2022, 01:29:37 pm by MrBreeze |
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Chassis Material preferences
Started by MrBreeze |
11 Replies
2795 Views |
July 15, 2022, 07:13:17 am by sluckey |
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29 Replies
6048 Views |
July 14, 2022, 03:54:58 pm by HotBluePlates |
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Electronics theory question
Started by nandrewjackson |
9 Replies
3290 Views |
July 14, 2022, 04:09:28 am by shooter |
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59 Replies
15197 Views |
July 13, 2022, 05:59:25 pm by cspar |
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preamp cathodes to ground location
Started by joesatch |
3 Replies
1960 Views |
July 13, 2022, 04:45:49 pm by tubeswell |
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Average Screen Current
Started by HotBluePlates |
17 Replies
6018 Views |
July 13, 2022, 08:53:34 am by DuaneOh |
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Where to insert Standby Switch?
Started by winterturtle |
4 Replies
2456 Views |
July 12, 2022, 04:34:31 pm by winterturtle |
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31 Replies
5749 Views |
July 12, 2022, 07:04:44 am by winterturtle |
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Eliminating RobRob's Hum balance ckt.
Started by JustMike |
1 Replies
1656 Views |
July 11, 2022, 07:46:46 pm by sluckey |
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8 Replies
3241 Views |
July 11, 2022, 02:45:18 pm by HotBluePlates |
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1965 Kay 703C - OT replacement questions
Started by Carlsoti |
6 Replies
2283 Views |
July 11, 2022, 11:34:59 am by PRR |
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