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