Welcome To the Hoffman Amplifiers Forum
March 11, 2026, 08:09:26 am
Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 08:09:26 am | ||
| Subject / Started by | Replies / Views | Last post  |
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Haven't done anything to this Zenith
Started by frankenxtein |
5 Replies
3903 Views |
June 20, 2022, 12:10:19 pmby frankenxtein |
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Russian substitute for 12AT7
Started by isaac_teller |
2 Replies
3716 Views |
June 20, 2022, 09:05:30 am by isaac_teller |
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Hammond Rebuild Layout Advice
Started by jordan86 |
3 Replies
2890 Views |
June 18, 2022, 10:36:30 pm by glass54 |
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Magnatone Varsity Reverb
Started by luthiernc |
1 Replies
2761 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
3871 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
3467 Views |
June 17, 2022, 04:24:57 pm by PRR |
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22 Replies
7131 Views |
June 17, 2022, 04:10:54 pm by sluckey |
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Diodes for 1970 Twin Reverb
Started by bbmade |
2 Replies
3075 Views |
June 17, 2022, 12:23:06 pm by bbmade |
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1 Replies
2801 Views |
June 17, 2022, 11:31:38 am by sluckey |
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Steel guitar tube input preamp
Started by Swampertech |
2 Replies
2903 Views |
June 17, 2022, 11:03:13 am by Swampertech |
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24 Replies
6706 Views |
June 17, 2022, 04:33:25 am by shooter |
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Preamp out help
Started by joesatch |
7 Replies
3239 Views |
June 16, 2022, 06:53:46 am by nandrewjackson |
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Old Topic , Channel Switching
Started by HighFlyingV |
4 Replies
3425 Views |
June 16, 2022, 01:09:51 am by HighFlyingV |
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JTM45 Radiospares Impedance selector
Started by jrgtwo |
7 Replies
4007 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
5069 Views |
June 15, 2022, 01:31:06 pm by Kesi from Hungary |
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6 Replies
3771 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
4633 Views |
June 13, 2022, 12:17:09 pm by waldner |
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PT wiring question / confirmation
Started by Bieworm |
3 Replies
2962 Views |
June 13, 2022, 06:39:14 am by sluckey |
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Really cheap pilot lamp !
Started by uki |
16 Replies
5777 Views |
June 13, 2022, 05:13:03 am by owen |
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Minimum dropping resistors?
Started by joesatch |
27 Replies
6826 Views |
June 13, 2022, 12:01:21 am by tubeswell |
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Gibson GA-8 1962 Discoverer
Started by vampwizzard |
12 Replies
5939 Views |
June 12, 2022, 05:59:25 pm by vampwizzard |
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18 Replies
5875 Views |
June 12, 2022, 05:48:33 pm by scstill |
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4 band EQ schematic??
Started by hesamadman |
26 Replies
17857 Views |
June 12, 2022, 02:58:13 am by kagliostro |
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New DR project sanity check?
Started by Lectroid |
17 Replies
5490 Views |
June 11, 2022, 07:58:12 pm by pdf64 |
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3 Replies
3145 Views |
June 10, 2022, 04:13:10 pm by ebulakowski |
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Masco tweak
Started by Diverted |
14 Replies
6745 Views |
June 10, 2022, 01:00:29 pm by sluckey |
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Bassman 5F6A fun Build
Started by p2pAmps |
0 Replies
3128 Views |
June 10, 2022, 07:40:21 am by p2pAmps |
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11 Replies
6078 Views |
June 10, 2022, 05:07:44 am by walkman |
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harmonic vibrato questions
Started by uki |
20 Replies
5724 Views |
June 10, 2022, 04:37:25 am by shooter |
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NFB circuit help
Started by joesatch |
4 Replies
2891 Views |
June 10, 2022, 02:28:52 am by nandrewjackson |
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Splitting channels
Started by Diverted |
1 Replies
2519 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
2951 Views |
June 09, 2022, 10:27:35 pm by joesatch |
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5K primary for EL34s
Started by dude |
2 Replies
2961 Views |
June 09, 2022, 09:08:36 pm by dude |
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Electrolytic Capacitor Value
Started by plexi50 |
2 Replies
2787 Views |
June 09, 2022, 06:51:55 pm by plexi50 |
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3 Replies
3289 Views |
June 09, 2022, 11:47:20 am by PRR |
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DC heater help
Started by joesatch |
9 Replies
4391 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
2709 Views |
June 08, 2022, 03:14:38 pm by uki |
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Lamp limiter- nada
Started by mrhudson27 |
4 Replies
3487 Views |
June 07, 2022, 09:34:14 pm by Keppy |
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Trainwreck Rocket 120hz Hum
Started by kendalosborne |
18 Replies
8021 Views |
June 07, 2022, 11:19:01 am by pdf64 |
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3 Replies
3260 Views |
June 07, 2022, 04:16:51 am by sluckey |
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1 Replies
2602 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
6073 Views |
June 05, 2022, 03:57:29 pm by 66Strat |
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Gibson EH-185 Layout
Started by reddead83 |
15 Replies
9636 Views |
June 05, 2022, 10:57:43 am by kagliostro |
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31 Replies
10588 Views |
June 05, 2022, 09:29:33 am by shooter |
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Why this resistor value?
Started by Lectroid |
3 Replies
2849 Views |
June 05, 2022, 08:09:56 am by Lectroid |
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20 Replies
8429 Views |
June 05, 2022, 05:40:13 am by nandrewjackson |
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Laney AOR
Started by Stuff4bikes |
1 Replies
2964 Views |
June 04, 2022, 09:46:43 pm by Stuff4bikes |
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EH Date Codes?
Started by vintasonic |
6 Replies
4914 Views |
June 03, 2022, 02:42:14 pm by vintasonic |
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9 Replies
5185 Views |
June 03, 2022, 12:06:26 pm by Fraggy0117 |
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Bias Capacitor Question
Started by plumcrazyfx |
14 Replies
7184 Views |
June 02, 2022, 06:30:51 pm by pdf64 |
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