Welcome To the Hoffman Amplifiers Forum
March 11, 2026, 04:00:19 pm
Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 04:00:19 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| passaloutre, Glenn, dogburn and 95 Guests are viewing this board. | ||||
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19 Replies
6575 Views |
January 06, 2017, 07:50:31 pmby 12AX7 |
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cold bias gain stage?
Started by 12AX7 |
7 Replies
6681 Views |
January 06, 2017, 06:19:56 pm by 12AX7 |
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Deluxe AB763 bias
Started by Leevi |
3 Replies
3458 Views |
January 06, 2017, 02:16:36 pm by Leevi |
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D'Mars ODS build completed
Started by MakerDP |
21 Replies
10092 Views |
January 06, 2017, 12:08:42 pm by MakerDP |
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50 Replies
15106 Views |
January 06, 2017, 07:48:19 am by Vdelli |
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Building the Power Amp Section ONLY
Started by jonyoungyi |
6 Replies
3776 Views |
January 05, 2017, 04:22:09 pm by jonyoungyi |
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Princeton reverb 120v USA to 240v UK
Started by kaborex |
2 Replies
3832 Views |
January 05, 2017, 12:35:25 pm by PRR |
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tremolo circuit
Started by J Rindt |
9 Replies
6132 Views |
January 05, 2017, 11:14:02 am by kagliostro |
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2 Replies
3435 Views |
January 05, 2017, 08:55:29 am by kagliostro |
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Master Volume placement in a 5C5 Tweed Pro
Started by Josiah |
7 Replies
5052 Views |
January 04, 2017, 07:01:35 pm by Josiah |
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6Sj7 to 6SL7 or the other way
Started by Ed_Chambley |
2 Replies
6698 Views |
January 04, 2017, 03:28:58 pm by Ed_Chambley |
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What is the purpose of paralleled triodes?
Started by 12AX7 |
11 Replies
16504 Views |
January 04, 2017, 02:53:43 pm by Ed_Chambley |
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"Doug Circuits" VOX AC4 Ver.3
Started by Attila |
5 Replies
18237 Views |
January 04, 2017, 01:32:52 pm by purpletele |
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43 Replies
15149 Views |
January 03, 2017, 06:45:02 pm by warioblast |
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power amp and diff preamps
Started by Colas LeGrippa |
2 Replies
3204 Views |
January 03, 2017, 05:19:58 pm by Colas LeGrippa |
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Peavey MACE hiss problem
Started by Colas LeGrippa |
13 Replies
6336 Views |
January 03, 2017, 05:12:17 pm by Colas LeGrippa |
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cold bias gain stage
Started by 12AX7 |
11 Replies
5517 Views |
January 02, 2017, 05:19:25 pm by 12AX7 |
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8 Replies
3936 Views |
January 01, 2017, 08:48:46 pm by purpletele |
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isolate or ground a reverb send jack?
Started by G._Hoffman |
3 Replies
3113 Views |
January 01, 2017, 07:14:33 pm by G._Hoffman |
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Bias setting problem
Started by Leevi |
24 Replies
8344 Views |
January 01, 2017, 06:52:36 pm by whoops |
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bias vs gain flatness
Started by PRR |
1 Replies
2790 Views |
January 01, 2017, 04:14:20 pm by PRR |
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Old Accordion Tube Amp
Started by drumslinger2000 |
21 Replies
6702 Views |
January 01, 2017, 10:06:22 am by drumslinger2000 |
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Biasing questions
Started by 12AX7 |
9 Replies
4339 Views |
December 31, 2016, 11:43:59 pm by PRR |
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9 Replies
4546 Views |
December 31, 2016, 06:13:42 pm by guitarsan221 |
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93 Replies
23694 Views |
December 31, 2016, 02:50:02 pm by Jaymz77 |
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High gain preamp help
Started by dennyg |
6 Replies
4096 Views |
December 31, 2016, 02:41:52 pm by PRR |
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McIntosh MC250
Started by p2pAmps |
15 Replies
9808 Views |
December 31, 2016, 10:12:46 am by p2pAmps |
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Erratic Voltage Readings
Started by jaster55 |
1 Replies
2730 Views |
December 30, 2016, 10:31:53 pm by sluckey |
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Revibe Build ala sluckey
Started by Blind Lemon |
30 Replies
8877 Views |
December 30, 2016, 07:18:48 pm by Blind Lemon |
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Conjunctive filter info please?
Started by jojokeo |
46 Replies
29392 Views |
December 30, 2016, 06:01:56 pm by BetterOffShred |
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4 Replies
5347 Views |
December 30, 2016, 02:35:15 pm by fiftynine |
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6 Replies
4276 Views |
December 30, 2016, 12:12:41 pm by 3choplex |
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15 Replies
6058 Views |
December 30, 2016, 11:12:05 am by hesamadman |
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Sag Resistor
Started by Ambugaton |
5 Replies
7132 Views |
December 29, 2016, 09:07:29 pm by eleventeen |
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4 Replies
3284 Views |
December 28, 2016, 10:07:46 pm by Planobilly |
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Do you think....
Started by 12AX7 |
5 Replies
4034 Views |
December 28, 2016, 12:47:57 am by whoops |
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6 Replies
4760 Views |
December 27, 2016, 04:18:39 pm by HotBluePlates |
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3 Replies
3287 Views |
December 27, 2016, 04:05:36 pm by tubenit |
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Sunn Model-T/200s Hybrid
Started by BetterOffShred |
20 Replies
9789 Views |
December 27, 2016, 12:11:31 pm by BetterOffShred |
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smoking amp on standby
Started by jim |
13 Replies
5376 Views |
December 27, 2016, 12:06:32 pm by jim |
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5 Replies
3393 Views |
December 26, 2016, 07:17:47 pm by HotBluePlates |
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Amp output issue/question
Started by Redfishbum |
2 Replies
3249 Views |
December 26, 2016, 02:47:45 pm by Redfishbum |
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5 Replies
4103 Views |
December 26, 2016, 11:15:58 am by Planobilly |
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1 Replies
3131 Views |
December 26, 2016, 07:27:46 am by sluckey |
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Diode rectifier for Tube...
Started by Oddvar |
4 Replies
3194 Views |
December 25, 2016, 02:31:07 pm by sluckey |
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Tonebox
Started by Sonny ReVerb |
39 Replies
11737 Views |
December 25, 2016, 02:07:18 pm by Zarrir |
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1967 Super Reverb Blackface Tranny change?
Started by Oddvar |
5 Replies
3576 Views |
December 24, 2016, 02:55:21 pm by Oddvar |
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Initial Bias adjustments
Started by jaster55 |
2 Replies
3476 Views |
December 24, 2016, 07:25:47 am by HotBluePlates |
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5 Replies
3856 Views |
December 24, 2016, 05:53:42 am by kagliostro |
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coupling caps n DC
Started by shooter |
25 Replies
7481 Views |
December 23, 2016, 09:09:20 pm by shooter |
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