Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 07:34:35 pm
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 07:34:35 pm | ||
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2 Replies
4535 Views |
November 21, 2022, 12:46:07 pmby PRR |
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Philips 6411 PA tubeamp ground points
Started by kagliostro |
11 Replies
16708 Views |
November 21, 2022, 07:29:10 am by kjulhansen |
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choke question
Started by 12AX7 |
8 Replies
5025 Views |
November 20, 2022, 05:32:22 am by pdf64 |
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2 Replies
4186 Views |
November 19, 2022, 08:03:01 am by scottcurry13 |
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Danelectro Amp repair, low bass Ch2
Started by dmp |
22 Replies
8754 Views |
November 18, 2022, 10:40:03 pm by dmp |
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4 Replies
4968 Views |
November 18, 2022, 10:16:01 pm by J3ona1 |
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15 Replies
7668 Views |
November 18, 2022, 08:40:32 pm by PRR |
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Are these tubes useful for amps?
Started by rafe |
16 Replies
9110 Views |
November 18, 2022, 04:40:30 pm by scstill |
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Comparing bias trem circuits
Started by Esquirefreak |
5 Replies
4991 Views |
November 18, 2022, 03:22:18 pm by tubeswell |
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Fender PA-100 Refurb
Started by davidb |
8 Replies
6043 Views |
November 17, 2022, 10:23:06 pm by davidb |
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5 Replies
5343 Views |
November 17, 2022, 10:00:27 pm by sluckey |
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5e8 preamp question.
Started by johngovan |
6 Replies
6003 Views |
November 17, 2022, 09:46:30 pm by johngovan |
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Dual Triode Tube Testing, Curve Tracer
Started by W5FH |
2 Replies
4652 Views |
November 17, 2022, 03:59:06 pm by HotBluePlates |
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Vox AC10 and AC15 100R EL84 resistors
Started by Jalmeida |
9 Replies
8828 Views |
November 17, 2022, 03:42:58 pm by HotBluePlates |
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Mesa Bottle Rocket - Circuit ?s
Started by BrassElephant |
6 Replies
5434 Views |
November 17, 2022, 07:23:14 am by BrassElephant |
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25 Replies
14372 Views |
November 17, 2022, 07:02:07 am by Balticnoiseforge |
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8 Replies
6265 Views |
November 16, 2022, 08:58:06 pm by punkykatt |
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AC30 screen and grid resistor values
Started by allstonma |
5 Replies
7205 Views |
November 16, 2022, 04:11:43 pm by tubeswell |
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Everything Bias
Started by jim |
8 Replies
5810 Views |
November 16, 2022, 09:48:30 am by JPK |
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Marshall 9005 bias supply?
Started by Bubbastain |
18 Replies
9603 Views |
November 15, 2022, 03:18:46 pm by sluckey |
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19 Replies
11459 Views |
November 15, 2022, 03:25:18 am by pdf64 |
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Crate VC 3112 caps
Started by rake |
1 Replies
4403 Views |
November 15, 2022, 03:03:22 am by Latole |
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3 Replies
4677 Views |
November 14, 2022, 04:40:31 pm by CrocMule |
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Presence contol placement within NFB loop
Started by 12AX7 |
20 Replies
9877 Views |
November 14, 2022, 11:08:49 am by sluckey |
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4 Replies
6713 Views |
November 14, 2022, 07:46:39 am by maltikeks |
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4 Replies
4717 Views |
November 14, 2022, 07:28:48 am by EL34 |
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what does this 470k do?
Started by 12AX7 |
15 Replies
7950 Views |
November 13, 2022, 06:57:27 pm by HotBluePlates |
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Bogen CHB 10A's Come alive
Started by Silvertone |
6 Replies
9426 Views |
November 13, 2022, 04:57:30 pm by moapys |
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DUAL50 problem keeps returning
Started by Bieworm |
8 Replies
5913 Views |
November 13, 2022, 01:36:36 pm by Jennings |
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remove tonestack from 2204 circuit
Started by joesatch |
4 Replies
4856 Views |
November 13, 2022, 12:12:27 pm by Jennings |
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0 Replies
4070 Views |
November 13, 2022, 10:32:33 am by scstill |
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Philips EL6401-02 popping mains fuse
Started by Jennings |
22 Replies
9183 Views |
November 13, 2022, 09:08:23 am by Jennings |
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18 Replies
9900 Views |
November 13, 2022, 06:14:21 am by Hoodnight |
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Installing a bias pot in a Blues Jr
Started by dude |
13 Replies
7757 Views |
November 12, 2022, 04:24:32 pm by dude |
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Dumble PCB boards project
Started by frusciante89 |
20 Replies
15588 Views |
November 12, 2022, 09:56:29 am by acheld |
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Brownface design question
Started by Greg |
0 Replies
4331 Views |
November 11, 2022, 08:51:23 pm by Greg |
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Potentiometer Wattage question
Started by Soulchief |
8 Replies
5439 Views |
November 11, 2022, 01:10:19 pm by Soulchief |
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43 Replies
14635 Views |
November 11, 2022, 11:31:10 am by Mike_J |
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18 Replies
9793 Views |
November 10, 2022, 11:06:24 pm by 12AX7 |
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6 Replies
5495 Views |
November 10, 2022, 10:45:57 pm by HotBluePlates |
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9 Replies
6245 Views |
November 10, 2022, 10:24:28 pm by ES125guy |
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Motorboating on bass pot
Started by Mr.Death |
20 Replies
8809 Views |
November 10, 2022, 09:44:33 am by Mr.Death |
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26 Replies
12165 Views |
November 09, 2022, 09:00:11 pm by thetragichero |
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Phoenix build
Started by Auke Jolman |
6 Replies
5425 Views |
November 09, 2022, 06:30:28 am by Auke Jolman |
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3 way NFB switch troubleshooting
Started by Ledvedder |
6 Replies
5948 Views |
November 09, 2022, 04:30:03 am by kagliostro |
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1930's radio conversion
Started by ALBATROS1234 |
6 Replies
5324 Views |
November 08, 2022, 07:37:06 pm by scstill |
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New 5e3 build voltage check
Started by Ledvedder |
10 Replies
6338 Views |
November 08, 2022, 11:17:55 am by JPK |
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99 Replies
34030 Views |
November 08, 2022, 09:17:42 am by pdf64 |
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0 Replies
4342 Views |
November 07, 2022, 06:21:39 pm by Steve Fundy |
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Scrap Build, Sluckey Dual Lite, planning
Started by CrocMule |
13 Replies
9368 Views |
November 07, 2022, 06:39:02 am by mresistor |
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