Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 01:58:38 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 01:58:38 pm | ||
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finally built it. big amp troubleshooting.
Started by birt |
28 Replies
7093 Views |
August 25, 2018, 11:59:16 amby birt |
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New Project
Started by okguitarman |
11 Replies
2856 Views |
August 25, 2018, 04:09:41 am by okguitarman |
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Power Amp Grid Leak Resistors
Started by mwelch55 |
9 Replies
4814 Views |
August 24, 2018, 02:42:11 pm by jjasilli |
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83 Replies
18313 Views |
August 24, 2018, 10:23:18 am by Diverted |
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single ended Converted to 5E3
Started by okguitarman |
3 Replies
2222 Views |
August 23, 2018, 09:55:58 pm by sluckey |
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8 Replies
3544 Views |
August 23, 2018, 05:06:07 pm by copperheadroads |
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Adding NFB to power tube cathode?
Started by jeff |
32 Replies
13753 Views |
August 23, 2018, 10:14:54 am by 92Volts |
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26 Replies
7181 Views |
August 22, 2018, 11:19:28 am by Platefire |
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3 Replies
2751 Views |
August 21, 2018, 09:53:35 am by shooter |
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3 Replies
2525 Views |
August 21, 2018, 06:29:11 am by tubenit |
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15 Replies
6849 Views |
August 20, 2018, 07:21:13 pm by galaxiex |
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Hoffman 30 watt amps on the bench
Started by LooseChange |
18 Replies
6252 Views |
August 20, 2018, 05:25:44 pm by EL34 |
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PLEXI 6V6 PLUS
Started by TIMBO |
31 Replies
12754 Views |
August 20, 2018, 04:25:10 pm by Big_Mike |
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Biasing weirdness on Hot Rod Deluxe
Started by jojokeo |
9 Replies
5418 Views |
August 20, 2018, 11:43:39 am by pdf64 |
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10 Replies
3268 Views |
August 19, 2018, 12:57:49 pm by MFowler |
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7 Replies
3154 Views |
August 19, 2018, 09:03:51 am by ginger |
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Ground lift. Keep or remove?
Started by plumcrazyfx |
6 Replies
2760 Views |
August 19, 2018, 06:41:50 am by ac427v |
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clipping diode arrangement
Started by jokn |
10 Replies
5470 Views |
August 17, 2018, 02:40:04 pm by d95err |
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10 Replies
5116 Views |
August 16, 2018, 09:31:14 pm by jjasilli |
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5E3 Tone stack
Started by okguitarman |
7 Replies
3248 Views |
August 16, 2018, 08:28:47 pm by okguitarman |
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2 Replies
2268 Views |
August 16, 2018, 07:11:33 pm by choosebronze |
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4 Replies
3934 Views |
August 16, 2018, 05:03:08 pm by jjasilli |
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16 Replies
5351 Views |
August 16, 2018, 10:20:24 am by Rascalrick |
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Which output transformer?
Started by Tapsnap |
20 Replies
10336 Views |
August 15, 2018, 12:56:38 pm by 92Volts |
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9 Replies
3240 Views |
August 14, 2018, 02:34:05 pm by ylelevier77 |
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5B6 Modded Layout
Started by reddead83 |
26 Replies
8730 Views |
August 14, 2018, 02:26:16 pm by reddead83 |
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Fender Champ PT
Started by basschops1528 |
33 Replies
10517 Views |
August 14, 2018, 01:17:29 pm by Paul1453 |
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Trying to start up a new JTM45 build
Started by draperjojo |
7 Replies
3894 Views |
August 14, 2018, 10:22:44 am by draperjojo |
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SS oscillator for harmonic vibrato
Started by terminalgs |
2 Replies
2762 Views |
August 13, 2018, 08:33:22 pm by PRR |
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2 Replies
2924 Views |
August 13, 2018, 08:27:42 pm by Anticpunk |
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New PT for Mesa Boogie .50 Caliber +
Started by Oddvar |
1 Replies
2013 Views |
August 13, 2018, 07:46:58 am by sluckey |
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Cause for this distortion
Started by Leevi |
4 Replies
2374 Views |
August 12, 2018, 03:15:29 pm by Leevi |
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Advise on repairing PT wires
Started by uki |
3 Replies
2353 Views |
August 12, 2018, 01:29:20 pm by uki |
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bias tremolo cuts out
Started by alange5 |
24 Replies
7229 Views |
August 11, 2018, 08:15:27 pm by davidwpack |
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Lifting the ground on AC Heaters
Started by Jonas |
6 Replies
5064 Views |
August 11, 2018, 07:53:34 pm by PRR |
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6BM8 "one tube reverb"
Started by tubenit |
15 Replies
7170 Views |
August 11, 2018, 05:55:18 pm by 2deaf |
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70 Replies
21192 Views |
August 10, 2018, 04:47:11 pm by Platefire |
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Output transformer questions
Started by ALBATROS1234 |
7 Replies
3446 Views |
August 10, 2018, 12:21:39 pm by ALBATROS1234 |
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1 Replies
2054 Views |
August 09, 2018, 09:25:46 pm by shooter |
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Standby switch location
Started by Diverted |
9 Replies
5599 Views |
August 08, 2018, 11:33:21 pm by SoundmasterG |
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Footswichable EQ Bypass
Started by JKRamsey1991 |
3 Replies
2879 Views |
August 08, 2018, 11:12:16 am by JKRamsey1991 |
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12vac filament PT
Started by dude |
2 Replies
2479 Views |
August 07, 2018, 02:50:47 pm by PRR |
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2 Replies
2565 Views |
August 06, 2018, 10:44:32 pm by silverfox |
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Transformer Question
Started by JKRamsey1991 |
4 Replies
2293 Views |
August 06, 2018, 08:08:37 am by JKRamsey1991 |
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Help with shielding
Started by dude |
5 Replies
2312 Views |
August 04, 2018, 04:22:30 pm by labb |
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Can a choke "buzz"?
Started by tubenit |
21 Replies
6950 Views |
August 04, 2018, 06:15:58 am by EL34 |
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5F6-A wiring purchased from website
Started by ewdaviee |
10 Replies
3931 Views |
August 04, 2018, 06:04:31 am by EL34 |
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sylvania jan chs 6v6gt/g plate voltage
Started by Paulycoo |
3 Replies
3041 Views |
August 03, 2018, 06:10:38 pm by PRR |
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Question about Hammond a0-44
Started by Scsoul |
2 Replies
2314 Views |
August 03, 2018, 11:30:50 am by tubenit |
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2 Replies
1982 Views |
August 02, 2018, 08:44:27 am by terminalgs |
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