Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 07:34:35 pm
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 07:34:35 pm | ||
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4 Replies
6608 Views |
June 22, 2022, 04:49:53 amby nemoi |
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one-knob tone stack
Started by burt_toast |
12 Replies
10801 Views |
June 21, 2022, 11:45:44 pm by thetragichero |
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10 Replies
7702 Views |
June 21, 2022, 04:06:11 pm by nandrewjackson |
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Transistor used for tremolo?
Started by BadCatCubII |
8 Replies
6230 Views |
June 21, 2022, 09:36:12 am by BadCatCubII |
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Ampeg V4B 1971
Started by Colas LeGrippa |
13 Replies
5975 Views |
June 20, 2022, 07:59:45 pm by owen |
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Cascode?
Started by dragonbat13 |
1 Replies
4384 Views |
June 20, 2022, 07:50:35 pm by HotBluePlates |
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11 Replies
6780 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
5675 Views |
June 20, 2022, 12:10:19 pm by frankenxtein |
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Russian substitute for 12AT7
Started by isaac_teller |
2 Replies
5167 Views |
June 20, 2022, 09:05:30 am by isaac_teller |
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Hammond Rebuild Layout Advice
Started by jordan86 |
3 Replies
4386 Views |
June 18, 2022, 10:36:30 pm by glass54 |
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Magnatone Varsity Reverb
Started by luthiernc |
1 Replies
4352 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
5541 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
5122 Views |
June 17, 2022, 04:24:57 pm by PRR |
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22 Replies
10425 Views |
June 17, 2022, 04:10:54 pm by sluckey |
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Diodes for 1970 Twin Reverb
Started by bbmade |
2 Replies
4710 Views |
June 17, 2022, 12:23:06 pm by bbmade |
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1 Replies
4245 Views |
June 17, 2022, 11:31:38 am by sluckey |
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Steel guitar tube input preamp
Started by Swampertech |
2 Replies
4426 Views |
June 17, 2022, 11:03:13 am by Swampertech |
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24 Replies
8922 Views |
June 17, 2022, 04:33:25 am by shooter |
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Preamp out help
Started by joesatch |
7 Replies
4726 Views |
June 16, 2022, 06:53:46 am by nandrewjackson |
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Old Topic , Channel Switching
Started by HighFlyingV |
4 Replies
5263 Views |
June 16, 2022, 01:09:51 am by HighFlyingV |
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JTM45 Radiospares Impedance selector
Started by jrgtwo |
7 Replies
5616 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
7210 Views |
June 15, 2022, 01:31:06 pm by Kesi from Hungary |
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6 Replies
5501 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
6552 Views |
June 13, 2022, 12:17:09 pm by waldner |
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PT wiring question / confirmation
Started by Bieworm |
3 Replies
4571 Views |
June 13, 2022, 06:39:14 am by sluckey |
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Really cheap pilot lamp !
Started by uki |
16 Replies
8532 Views |
June 13, 2022, 05:13:03 am by owen |
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Minimum dropping resistors?
Started by joesatch |
27 Replies
10041 Views |
June 13, 2022, 12:01:21 am by tubeswell |
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Gibson GA-8 1962 Discoverer
Started by vampwizzard |
12 Replies
8385 Views |
June 12, 2022, 05:59:25 pm by vampwizzard |
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18 Replies
8207 Views |
June 12, 2022, 05:48:33 pm by scstill |
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4 band EQ schematic??
Started by hesamadman |
26 Replies
20689 Views |
June 12, 2022, 02:58:13 am by kagliostro |
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New DR project sanity check?
Started by Lectroid |
17 Replies
7846 Views |
June 11, 2022, 07:58:12 pm by pdf64 |
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3 Replies
4754 Views |
June 10, 2022, 04:13:10 pm by ebulakowski |
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Masco tweak
Started by Diverted |
14 Replies
8987 Views |
June 10, 2022, 01:00:29 pm by sluckey |
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Bassman 5F6A fun Build
Started by p2pAmps |
0 Replies
5278 Views |
June 10, 2022, 07:40:21 am by p2pAmps |
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11 Replies
8394 Views |
June 10, 2022, 05:07:44 am by walkman |
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harmonic vibrato questions
Started by uki |
20 Replies
8590 Views |
June 10, 2022, 04:37:25 am by shooter |
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NFB circuit help
Started by joesatch |
4 Replies
4460 Views |
June 10, 2022, 02:28:52 am by nandrewjackson |
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Splitting channels
Started by Diverted |
1 Replies
4054 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
4619 Views |
June 09, 2022, 10:27:35 pm by joesatch |
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5K primary for EL34s
Started by dude |
2 Replies
4658 Views |
June 09, 2022, 09:08:36 pm by dude |
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Electrolytic Capacitor Value
Started by plexi50 |
2 Replies
4301 Views |
June 09, 2022, 06:51:55 pm by plexi50 |
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3 Replies
4903 Views |
June 09, 2022, 11:47:20 am by PRR |
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DC heater help
Started by joesatch |
9 Replies
6660 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
4466 Views |
June 08, 2022, 03:14:38 pm by uki |
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Lamp limiter- nada
Started by mrhudson27 |
4 Replies
5250 Views |
June 07, 2022, 09:34:14 pm by Keppy |
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Trainwreck Rocket 120hz Hum
Started by kendalosborne |
18 Replies
10600 Views |
June 07, 2022, 11:19:01 am by pdf64 |
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3 Replies
4997 Views |
June 07, 2022, 04:16:51 am by sluckey |
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1 Replies
4054 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
8227 Views |
June 05, 2022, 03:57:29 pm by 66Strat |
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Gibson EH-185 Layout
Started by reddead83 |
15 Replies
11713 Views |
June 05, 2022, 10:57:43 am by kagliostro |
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