Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:33:08 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:33:08 am | ||
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8 Replies
2654 Views |
May 31, 2023, 04:59:27 pmby fossilshark |
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Bias Calculations for Cathode bias??
Started by Jalmeida |
10 Replies
3562 Views |
May 31, 2023, 11:02:58 am by Lectroid |
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30ish watt bass amp
Started by Beezerboy |
16 Replies
3752 Views |
May 30, 2023, 08:19:17 am by Lectroid |
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28 Replies
5017 Views |
May 29, 2023, 06:04:07 pm by jeff |
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11 Replies
2741 Views |
May 29, 2023, 04:27:27 pm by mresistor |
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11 Replies
2854 Views |
May 29, 2023, 12:54:43 pm by dude |
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Gretsch Playboy 6156T No Schematic Found
Started by plexi50 |
12 Replies
3325 Views |
May 29, 2023, 11:07:44 am by plexi50 |
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pre-made fwb rectifiers
Started by joesatch |
11 Replies
2928 Views |
May 29, 2023, 10:28:40 am by thetragichero |
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5 Replies
2383 Views |
May 28, 2023, 04:06:11 pm by Porpoise Head |
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1964 Vibroverb
Started by Rockranger |
9 Replies
2758 Views |
May 28, 2023, 12:39:32 pm by Rockranger |
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Effects Loop Questions
Started by Rontone |
6 Replies
3018 Views |
May 28, 2023, 11:48:55 am by Rontone |
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Nolan 50w Multi Purpose Amp Repair
Started by Rontone |
7 Replies
3074 Views |
May 28, 2023, 09:40:00 am by Rontone |
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Traynor YVM-1 much needed repair
Started by fossilshark |
11 Replies
3124 Views |
May 28, 2023, 09:15:08 am by sluckey |
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13 Replies
3426 Views |
May 27, 2023, 06:27:19 am by p2pAmps |
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8 Replies
2643 Views |
May 26, 2023, 01:40:21 pm by tdvt |
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Primary voltage readings
Started by TF2112 |
6 Replies
2202 Views |
May 26, 2023, 11:37:55 am by TF2112 |
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Hot switch or JCM 800
Started by Bigampman |
9 Replies
2880 Views |
May 26, 2023, 10:59:24 am by pdf64 |
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Gibson GA-16T/18T done
Started by Blooze |
29 Replies
5089 Views |
May 25, 2023, 08:40:30 pm by Blooze |
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6SJ7 driven tremolo? Silvertone1333
Started by Jerry garrcia |
1 Replies
1587 Views |
May 25, 2023, 04:42:40 pm by sluckey |
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Hum from power section
Started by Colas LeGrippa |
11 Replies
2849 Views |
May 25, 2023, 12:09:21 pm by Colas LeGrippa |
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jcm800 2204 noisy
Started by fossilshark |
3 Replies
2026 Views |
May 25, 2023, 09:22:14 am by fossilshark |
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Marshall 2550 schematic
Started by Leevi |
1 Replies
1928 Views |
May 25, 2023, 06:30:26 am by sluckey |
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7 Replies
2439 Views |
May 25, 2023, 06:21:13 am by sluckey |
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5 Replies
2132 Views |
May 25, 2023, 02:46:55 am by kagliostro |
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32 Replies
5552 Views |
May 24, 2023, 08:46:35 pm by Apexelectric |
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0 Replies
1529 Views |
May 24, 2023, 07:16:08 pm by marshallguy |
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5 Replies
2702 Views |
May 23, 2023, 09:36:41 pm by Amped |
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Cathode bias amp variable resistor
Started by Colas LeGrippa |
19 Replies
4694 Views |
May 23, 2023, 07:04:33 pm by Colas LeGrippa |
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EF86 Microphonics and RF coupling?
Started by Jalmeida |
1 Replies
1659 Views |
May 23, 2023, 12:46:50 pm by Williamblake |
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Rob Robinette Champ Micro Build
Started by AndrewD |
6 Replies
2778 Views |
May 23, 2023, 06:45:35 am by kagliostro |
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Weird power amp wiring
Started by Leevi |
3 Replies
2032 Views |
May 22, 2023, 04:13:35 pm by PRR |
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21 Replies
4448 Views |
May 22, 2023, 04:32:28 am by pdf64 |
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8 Replies
2712 Views |
May 21, 2023, 08:27:23 pm by bmccowan |
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Gibson GA-18T Tremolo
Started by Blooze |
10 Replies
2940 Views |
May 21, 2023, 09:05:14 am by sluckey |
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1 Replies
1619 Views |
May 20, 2023, 07:37:59 pm by 72Blazer |
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PP valve amp KT88 BIAS-question
Started by cfortner |
22 Replies
4606 Views |
May 20, 2023, 04:36:51 pm by cfortner |
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Filmosound 202 Help
Started by oogabooga23 |
6 Replies
2526 Views |
May 20, 2023, 12:27:31 pm by BrainDeadAmps |
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139 Replies
19344 Views |
May 19, 2023, 09:00:02 pm by acheld |
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Vox AC15C1 Burning 5 Watt Resistors
Started by Pavels07 |
10 Replies
3815 Views |
May 19, 2023, 05:32:46 pm by AmberB |
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Channel switch grid reference
Started by BrainDeadAmps |
2 Replies
1916 Views |
May 19, 2023, 04:05:08 pm by BrainDeadAmps |
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32 Replies
7024 Views |
May 18, 2023, 11:34:09 am by munkeyboy |
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13 Replies
3746 Views |
May 18, 2023, 08:41:41 am by sluckey |
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Fender Twin Reverb Troubleshooting
Started by NoDough |
20 Replies
6001 Views |
May 17, 2023, 10:36:04 pm by mresistor |
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How to read B+ current on my '69 Vox AC30?
Started by jhanly |
11 Replies
2919 Views |
May 17, 2023, 07:14:36 am by jhanly |
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SE Amp Project
Started by Rontone |
7 Replies
2308 Views |
May 16, 2023, 11:15:23 pm by AmberB |
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4 Replies
1835 Views |
May 16, 2023, 09:21:45 pm by Buck Webster |
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Line out Issue
Started by BrainDeadAmps |
4 Replies
1902 Views |
May 16, 2023, 04:49:18 pm by sluckey |
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What to build?
Started by squierstrat |
11 Replies
2697 Views |
May 16, 2023, 02:38:12 pm by squierstrat |
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Hammond 290 Series Ratings
Started by W5FH |
8 Replies
2993 Views |
May 16, 2023, 10:27:54 am by acheld |
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cathode follower and the preceeding stage
Started by 12AX7 |
18 Replies
6033 Views |
May 16, 2023, 06:53:30 am by marshallguy |
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