Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 12:16:18 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 12:16:18 pm | ||
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| Williamblake and 86 Guests are viewing this board. | ||||
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Transistor used for tremolo?
Started by BadCatCubII |
8 Replies
3339 Views |
June 21, 2022, 09:36:12 amby BadCatCubII |
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Ampeg V4B 1971
Started by Colas LeGrippa |
13 Replies
3287 Views |
June 20, 2022, 07:59:45 pm by owen |
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Cascode?
Started by dragonbat13 |
1 Replies
2180 Views |
June 20, 2022, 07:50:35 pm by HotBluePlates |
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11 Replies
3654 Views |
June 20, 2022, 05:11:59 pm by shooter |
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Haven't done anything to this Zenith
Started by frankenxtein |
5 Replies
3012 Views |
June 20, 2022, 12:10:19 pm by frankenxtein |
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Russian substitute for 12AT7
Started by isaac_teller |
2 Replies
2930 Views |
June 20, 2022, 09:05:30 am by isaac_teller |
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Hammond Rebuild Layout Advice
Started by jordan86 |
3 Replies
2103 Views |
June 18, 2022, 10:36:30 pm by glass54 |
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Magnatone Varsity Reverb
Started by luthiernc |
1 Replies
2007 Views |
June 18, 2022, 05:09:37 pm by tubeswell |
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Raising the 1M resistor on the input.
Started by valvetones |
7 Replies
3021 Views |
June 18, 2022, 07:08:31 am by pdf64 |
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Is this idea crazy? What would you do?
Started by Diverted |
6 Replies
2727 Views |
June 17, 2022, 04:24:57 pm by PRR |
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22 Replies
5702 Views |
June 17, 2022, 04:10:54 pm by sluckey |
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Orange TH30 questions
Started by Bieworm |
8 Replies
4584 Views |
June 17, 2022, 02:01:17 pm by Keppy |
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Diodes for 1970 Twin Reverb
Started by bbmade |
2 Replies
2299 Views |
June 17, 2022, 12:23:06 pm by bbmade |
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1 Replies
2018 Views |
June 17, 2022, 11:31:38 am by sluckey |
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Steel guitar tube input preamp
Started by Swampertech |
2 Replies
2093 Views |
June 17, 2022, 11:03:13 am by Swampertech |
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24 Replies
5484 Views |
June 17, 2022, 04:33:25 am by shooter |
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Preamp out help
Started by joesatch |
7 Replies
2533 Views |
June 16, 2022, 06:53:46 am by nandrewjackson |
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Old Topic , Channel Switching
Started by HighFlyingV |
4 Replies
2576 Views |
June 16, 2022, 01:09:51 am by HighFlyingV |
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JTM45 Radiospares Impedance selector
Started by jrgtwo |
7 Replies
3067 Views |
June 15, 2022, 03:45:00 pm by jrgtwo |
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Fender champ 12 messup
Started by Kesi from Hungary |
10 Replies
3915 Views |
June 15, 2022, 01:31:06 pm by Kesi from Hungary |
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6 Replies
2780 Views |
June 13, 2022, 01:58:01 pm by JustTheDad |
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How to add NFB to 18 Watt Stout Reverb
Started by waldner |
15 Replies
3683 Views |
June 13, 2022, 12:17:09 pm by waldner |
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PT wiring question / confirmation
Started by Bieworm |
3 Replies
2154 Views |
June 13, 2022, 06:39:14 am by sluckey |
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Really cheap pilot lamp !
Started by uki |
16 Replies
4605 Views |
June 13, 2022, 05:13:03 am by owen |
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Minimum dropping resistors?
Started by joesatch |
27 Replies
5288 Views |
June 13, 2022, 12:01:21 am by tubeswell |
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Gibson GA-8 1962 Discoverer
Started by vampwizzard |
12 Replies
4638 Views |
June 12, 2022, 05:59:25 pm by vampwizzard |
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18 Replies
4602 Views |
June 12, 2022, 05:48:33 pm by scstill |
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4 band EQ schematic??
Started by hesamadman |
26 Replies
16210 Views |
June 12, 2022, 02:58:13 am by kagliostro |
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New DR project sanity check?
Started by Lectroid |
17 Replies
4445 Views |
June 11, 2022, 07:58:12 pm by pdf64 |
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3 Replies
2378 Views |
June 10, 2022, 04:13:10 pm by ebulakowski |
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Masco tweak
Started by Diverted |
14 Replies
5625 Views |
June 10, 2022, 01:00:29 pm by sluckey |
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Bassman 5F6A fun Build
Started by p2pAmps |
0 Replies
2304 Views |
June 10, 2022, 07:40:21 am by p2pAmps |
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11 Replies
5051 Views |
June 10, 2022, 05:07:44 am by walkman |
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harmonic vibrato questions
Started by uki |
20 Replies
4472 Views |
June 10, 2022, 04:37:25 am by shooter |
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NFB circuit help
Started by joesatch |
4 Replies
2170 Views |
June 10, 2022, 02:28:52 am by nandrewjackson |
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Splitting channels
Started by Diverted |
1 Replies
1836 Views |
June 10, 2022, 01:38:25 am by d95err |
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Help with AS-05T200 PT rectification
Started by joesatch |
4 Replies
2131 Views |
June 09, 2022, 10:27:35 pm by joesatch |
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5K primary for EL34s
Started by dude |
2 Replies
2189 Views |
June 09, 2022, 09:08:36 pm by dude |
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Electrolytic Capacitor Value
Started by plexi50 |
2 Replies
2088 Views |
June 09, 2022, 06:51:55 pm by plexi50 |
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3 Replies
2536 Views |
June 09, 2022, 11:47:20 am by PRR |
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DC heater help
Started by joesatch |
9 Replies
3334 Views |
June 08, 2022, 08:57:58 pm by thetragichero |
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Hum can be really trick sometimes!!
Started by uki |
0 Replies
2068 Views |
June 08, 2022, 03:14:38 pm by uki |
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Lamp limiter- nada
Started by mrhudson27 |
4 Replies
2582 Views |
June 07, 2022, 09:34:14 pm by Keppy |
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Trainwreck Rocket 120hz Hum
Started by kendalosborne |
18 Replies
6716 Views |
June 07, 2022, 11:19:01 am by pdf64 |
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3 Replies
2433 Views |
June 07, 2022, 04:16:51 am by sluckey |
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1 Replies
1942 Views |
June 05, 2022, 09:25:49 pm by Keppy |
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What happened to the Death Ray?
Started by PRR |
19 Replies
4854 Views |
June 05, 2022, 03:57:29 pm by 66Strat |
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Gibson EH-185 Layout
Started by reddead83 |
15 Replies
8481 Views |
June 05, 2022, 10:57:43 am by kagliostro |
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31 Replies
8582 Views |
June 05, 2022, 09:29:33 am by shooter |
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Why this resistor value?
Started by Lectroid |
3 Replies
2210 Views |
June 05, 2022, 08:09:56 am by Lectroid |
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