Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 08:28:57 pm
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 08:28:57 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 33 Guests are viewing this board. | ||||
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Mixing parallel triodes
Started by clyde |
8 Replies
6742 Views |
November 10, 2023, 07:50:20 pmby PRR |
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Output transformer matching question.
Started by Tapsnap |
4 Replies
5271 Views |
November 10, 2023, 03:46:48 pm by PRR |
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Maintenance for old potentiometers
Started by Esquirefreak |
7 Replies
6199 Views |
November 10, 2023, 09:56:11 am by kagliostro |
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Input stages, biasing
Started by peacocksuit |
8 Replies
6284 Views |
November 10, 2023, 07:32:42 am by HotBluePlates |
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6 Replies
6275 Views |
November 10, 2023, 06:43:15 am by jjasilli |
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April 1937
Started by PRR |
13 Replies
7724 Views |
November 09, 2023, 10:38:51 pm by tubeswell |
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Old-school cap notation/Gibson schematic
Started by tdvt |
5 Replies
5595 Views |
November 09, 2023, 05:14:25 pm by sluckey |
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Oscillation from Presence Control
Started by jewishjay |
17 Replies
9369 Views |
November 09, 2023, 03:21:50 pm by AlNewman |
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15 Replies
10571 Views |
November 08, 2023, 08:13:33 pm by ebulakowski |
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Strange circuit Echolette B30 amp
Started by cfortner |
5 Replies
5996 Views |
November 08, 2023, 03:36:00 pm by cfortner |
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4 Replies
4966 Views |
November 08, 2023, 03:05:36 pm by kagliostro |
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New 5F6A Build - Super Low Volume
Started by rvaughan |
14 Replies
7322 Views |
November 08, 2023, 01:00:28 pm by rvaughan |
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13 Replies
8318 Views |
November 07, 2023, 12:04:50 am by PRR |
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7 Replies
5831 Views |
November 06, 2023, 04:14:14 pm by ALBATROS1234 |
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separated bass/treble controls
Started by burt_toast |
8 Replies
6492 Views |
November 06, 2023, 08:48:10 am by tubeswell |
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9 Replies
7083 Views |
November 05, 2023, 05:43:50 pm by Keyboy |
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4 Replies
5168 Views |
November 05, 2023, 06:13:33 am by pdf64 |
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"bass friendly" AB763 ?
Started by worth |
13 Replies
9253 Views |
November 04, 2023, 11:49:29 pm by saxetc |
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Leslie 25 Guitar Amp
Started by scstill |
5 Replies
6841 Views |
November 02, 2023, 07:17:58 pm by scstill |
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How to bias this amp
Started by dude |
14 Replies
7859 Views |
November 02, 2023, 05:33:43 pm by stratomaster |
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Pro reverb versus Twin reverb???
Started by Jalmeida |
14 Replies
9523 Views |
November 02, 2023, 09:11:47 am by Platefire |
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2 Replies
4069 Views |
November 01, 2023, 03:54:56 pm by stratomaster |
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DIY power amp for use with a modeler
Started by music321 |
14 Replies
18389 Views |
November 01, 2023, 02:27:20 pm by guitardude57 |
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14 Replies
5945 Views |
November 01, 2023, 10:31:08 am by mresistor |
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potential build transformer placement
Started by joesatch |
7 Replies
5340 Views |
October 31, 2023, 08:31:25 pm by sluckey |
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6BM8 Stereo SE Amp
Started by TIMBO |
35 Replies
12150 Views |
October 31, 2023, 04:39:36 pm by glass54 |
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old tape recorder to vox ac4
Started by Kesi from Hungary |
6 Replies
4915 Views |
October 31, 2023, 04:02:14 pm by Williamblake |
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5 Replies
4576 Views |
October 31, 2023, 02:31:46 pm by PRR |
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Restuffing Cap Cans
Started by passaloutre |
24 Replies
9473 Views |
October 31, 2023, 08:52:44 am by kagliostro |
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Sanity check: Transformer orientation
Started by Diverted |
5 Replies
4778 Views |
October 30, 2023, 01:34:06 pm by Diverted |
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Leslie 251
Started by jewishjay |
13 Replies
7725 Views |
October 30, 2023, 12:06:37 pm by scstill |
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3 Replies
4427 Views |
October 30, 2023, 02:06:10 am by shooter |
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Switchable Sag Resistor
Started by 22uf |
11 Replies
7251 Views |
October 28, 2023, 01:50:41 pm by HotBluePlates |
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Identifying This Gibson Amp With Tremelo
Started by plexi50 |
16 Replies
7021 Views |
October 28, 2023, 12:15:31 pm by ac427v |
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Tweaking an Acoustic 370
Started by pbman1953 |
13 Replies
7199 Views |
October 27, 2023, 06:01:22 pm by pbman1953 |
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Ultralinear for Single Ended amp?
Started by jordan86 |
31 Replies
15798 Views |
October 27, 2023, 04:46:13 pm by madnis |
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Class AB 6L6 design help
Started by Gregwor |
8 Replies
7003 Views |
October 27, 2023, 04:37:35 pm by pdf64 |
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4 Replies
4540 Views |
October 26, 2023, 10:42:55 am by Williamblake |
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2 channel amp DPDT switching
Started by Bieworm |
11 Replies
6760 Views |
October 25, 2023, 07:07:30 pm by sluckey |
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Impedance/build question
Started by Diverted |
4 Replies
4108 Views |
October 25, 2023, 12:38:11 pm by Diverted |
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Dual Lite Underway…
Started by imgumby001 |
10 Replies
5441 Views |
October 25, 2023, 10:07:40 am by labb |
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4 Replies
4036 Views |
October 25, 2023, 09:18:09 am by delray |
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Too much reverb on ab763
Started by phsyconoodler |
19 Replies
8910 Views |
October 24, 2023, 09:51:14 pm by stratomaster |
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Grounding Theory
Started by Nathan |
6 Replies
5227 Views |
October 24, 2023, 07:40:51 pm by labb |
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Heater wiring question
Started by peacocksuit |
11 Replies
6020 Views |
October 24, 2023, 05:44:12 pm by kagliostro |
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AO-44 Conversion...a little weak
Started by 420Jazzerciser |
8 Replies
5640 Views |
October 24, 2023, 02:16:22 pm by 420Jazzerciser |
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Push Pull 6550 Low Volume?
Started by oogabooga23 |
2 Replies
3972 Views |
October 24, 2023, 10:51:56 am by oogabooga23 |
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Heathkit into 1/3Watt
Started by John |
3 Replies
4298 Views |
October 23, 2023, 06:18:36 pm by John |
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5 Replies
4420 Views |
October 23, 2023, 04:30:30 pm by Bassden |
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Homemade Signal Tracer
Started by dude |
5 Replies
5953 Views |
October 23, 2023, 01:01:24 am by kagliostro |
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