Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 12:59:05 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 12:59:05 pm | ||
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| punkykatt and 97 Guests are viewing this board. | ||||
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Output transformer ringing
Started by Esquirefreak |
0 Replies
1965 Views |
December 05, 2022, 11:33:53 amby Esquirefreak |
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Amp Projects
Started by Lectroid |
19 Replies
5348 Views |
December 04, 2022, 07:18:54 pm by PRR |
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11 Replies
3588 Views |
December 04, 2022, 02:07:36 pm by kagliostro |
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Cathode biased Blues Junior new project
Started by acheld |
13 Replies
4680 Views |
December 04, 2022, 11:01:31 am by pdf64 |
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19 Replies
5301 Views |
December 03, 2022, 11:26:43 am by bmccowan |
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Passive Effects Loop Implementation
Started by McAbe |
9 Replies
4623 Views |
December 03, 2022, 02:47:37 am by pdf64 |
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3 Replies
2218 Views |
December 02, 2022, 06:27:10 pm by kagliostro |
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Power transformer wiring question
Started by Erik Aa |
23 Replies
5724 Views |
December 02, 2022, 01:38:04 pm by Erik Aa |
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59 Replies
67146 Views |
December 01, 2022, 04:01:27 pm by shooter |
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The danger of vacuum tubes
Started by isaac_teller |
5 Replies
2882 Views |
December 01, 2022, 03:44:28 pm by mresistor |
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Switch between 2 different output valves
Started by Paulycoo |
16 Replies
3988 Views |
December 01, 2022, 11:20:55 am by kagliostro |
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7 Replies
2526 Views |
November 30, 2022, 01:21:48 pm by fdesalvo |
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parallel input jack wiring
Started by BrainDeadAmps |
2 Replies
2033 Views |
November 30, 2022, 12:33:00 pm by BrainDeadAmps |
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16 Replies
4005 Views |
November 30, 2022, 11:58:57 am by BetterOffShred |
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AC10 Intensity in AC4? <<Solved>>
Started by dwinstonwood |
14 Replies
4403 Views |
November 30, 2022, 08:58:41 am by dwinstonwood |
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29 Replies
5786 Views |
November 29, 2022, 10:11:29 pm by JPK |
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Howling Feedback in Reveb Recovery
Started by jewishjay |
5 Replies
2688 Views |
November 29, 2022, 11:02:35 am by GroundhogKen |
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12 Replies
3751 Views |
November 29, 2022, 07:33:48 am by Williamblake |
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15 Replies
11477 Views |
November 27, 2022, 05:57:03 pm by kagliostro |
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Vox AC4 question. Need explanations.
Started by johngovan |
9 Replies
3385 Views |
November 27, 2022, 03:49:28 pm by kagliostro |
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10 Replies
3746 Views |
November 27, 2022, 04:59:22 am by fkitch |
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7 Replies
3164 Views |
November 26, 2022, 05:01:22 pm by PRR |
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2 Replies
2267 Views |
November 26, 2022, 10:42:19 am by acheld |
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9 Replies
3419 Views |
November 25, 2022, 05:29:03 pm by HotBluePlates |
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Steve Luckey November project
Started by isaac_teller |
3 Replies
2123 Views |
November 25, 2022, 02:45:17 pm by kagliostro |
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Any issues with this laylout
Started by dude |
12 Replies
3644 Views |
November 25, 2022, 02:23:50 pm by sluckey |
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15 Replies
5849 Views |
November 25, 2022, 09:19:39 am by kagliostro |
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16 Replies
4731 Views |
November 25, 2022, 02:07:04 am by Jennings |
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1M value for Treble pot.
Started by Mr.Death |
2 Replies
2096 Views |
November 24, 2022, 06:10:13 pm by Mr.Death |
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11 Replies
4054 Views |
November 24, 2022, 05:09:40 pm by tubeswell |
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Plate Resistor Type Question
Started by dragonbat13 |
3 Replies
2263 Views |
November 24, 2022, 05:05:17 pm by tubeswell |
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Coupling capacitors
Started by Mr.Death |
3 Replies
2418 Views |
November 24, 2022, 04:09:21 pm by PRR |
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Leslie 45cab/47 power amp
Started by Willabe |
9 Replies
5468 Views |
November 24, 2022, 03:38:45 pm by PRR |
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Hoffman Plexi 50 power supply
Started by Sergiouliana |
20 Replies
5034 Views |
November 24, 2022, 12:44:28 pm by pdf64 |
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Output Transformer calculation
Started by Williamblake |
2 Replies
2723 Views |
November 24, 2022, 10:32:06 am by Williamblake |
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Adding some bottom end to an AX84 High Octane
Started by JPK |
10 Replies
4245 Views |
November 24, 2022, 07:37:42 am by JPK |
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spongy feel in preamp
Started by 12AX7 |
21 Replies
5357 Views |
November 23, 2022, 09:57:55 pm by tubeswell |
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2 Replies
2394 Views |
November 23, 2022, 08:50:35 pm by MWaldorf |
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3 Replies
3253 Views |
November 23, 2022, 06:07:11 pm by sluckey |
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Bias question
Started by Mr.Death |
6 Replies
2533 Views |
November 22, 2022, 06:43:07 pm by Mr.Death |
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8 Replies
3004 Views |
November 22, 2022, 05:09:38 pm by sluckey |
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Grommet size applications
Started by Blooze |
11 Replies
3937 Views |
November 22, 2022, 05:00:47 pm by Blooze |
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1984 Mesa Mark II C+ Power Tube Diodes
Started by plexi50 |
25 Replies
6006 Views |
November 22, 2022, 02:41:57 pm by plexi50 |
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Hot and cold gain staging
Started by Mr.Death |
4 Replies
2630 Views |
November 22, 2022, 10:53:56 am by Mr.Death |
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35 Replies
8698 Views |
November 22, 2022, 04:37:18 am by DummyLoad |
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62 Replies
12712 Views |
November 21, 2022, 03:47:43 pm by JPK |
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2 Replies
2300 Views |
November 21, 2022, 12:46:07 pm by PRR |
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Philips 6411 PA tubeamp ground points
Started by kagliostro |
11 Replies
13355 Views |
November 21, 2022, 07:29:10 am by kjulhansen |
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choke question
Started by 12AX7 |
8 Replies
2935 Views |
November 20, 2022, 05:32:22 am by pdf64 |
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2 Replies
2105 Views |
November 19, 2022, 08:03:01 am by scottcurry13 |
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