Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 12:58:23 pm
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 12:58:23 pm | ||
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| jukelemon and 31 Guests are viewing this board. | ||||
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Fender Deluxe Output Transformer testing
Started by fritz203 |
14 Replies
3899 Views |
April 04, 2022, 03:40:11 pmby fritz203 |
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2 Replies
1563 Views |
April 04, 2022, 03:27:46 pm by fdesalvo |
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Princeton Reverb NFB resistor issue
Started by teletaylor |
4 Replies
2067 Views |
April 04, 2022, 01:49:22 pm by PRR |
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18 Replies
4761 Views |
April 04, 2022, 12:12:29 pm by pdf64 |
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Boost switch on AB763
Started by dude |
4 Replies
1781 Views |
April 03, 2022, 03:05:54 pm by dude |
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7 Replies
2496 Views |
April 03, 2022, 01:20:23 pm by shooter |
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Blues JR Versions vs schematics
Started by Nathan |
10 Replies
3237 Views |
April 03, 2022, 06:49:55 am by pdf64 |
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IERC tube shields
Started by PharmRock |
1 Replies
1462 Views |
April 02, 2022, 12:15:56 pm by sluckey |
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19 Replies
3717 Views |
April 02, 2022, 01:16:33 am by SoundmasterG |
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Dual bias mod question
Started by joesatch |
8 Replies
2648 Views |
April 01, 2022, 12:27:05 pm by astronomicum |
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6V6 20 watt OT
Started by Kaaskop |
20 Replies
5558 Views |
March 31, 2022, 05:21:35 pm by Kaaskop |
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Trem Injection
Started by Sonny ReVerb |
3 Replies
1586 Views |
March 31, 2022, 09:16:09 am by Sonny ReVerb |
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5 Replies
2347 Views |
March 31, 2022, 08:00:13 am by sluckey |
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Can i run DC heaters with this?
Started by joesatch |
18 Replies
3866 Views |
March 30, 2022, 04:50:41 pm by PRR |
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Supro Coronado Build
Started by craigtone |
7 Replies
2349 Views |
March 30, 2022, 01:49:57 pm by craigtone |
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70s Twin Reverb - Unusual noise
Started by falconer333 |
2 Replies
1693 Views |
March 30, 2022, 07:30:02 am by Latole |
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Lectures on cathode followers
Started by lantertronics |
1 Replies
1573 Views |
March 30, 2022, 12:45:36 am by Electron Tornado |
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213 Troubadour Voltages
Started by svejkist |
3 Replies
1850 Views |
March 29, 2022, 09:45:40 pm by svejkist |
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Transformer Selection Question
Started by Kaaskop |
0 Replies
1506 Views |
March 29, 2022, 09:13:27 pm by Kaaskop |
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6EU7 tube in a guitar amp?
Started by AmberB |
10 Replies
3881 Views |
March 29, 2022, 08:48:03 pm by HotBluePlates |
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Tube amp and line regulation
Started by pbman1953 |
4 Replies
1801 Views |
March 29, 2022, 08:27:10 pm by HotBluePlates |
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17 Replies
3579 Views |
March 29, 2022, 03:32:08 pm by tubeswell |
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Interesting You Tube channels
Started by Electron Tornado |
1 Replies
1555 Views |
March 29, 2022, 05:00:14 am by lantertronics |
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55 Replies
10972 Views |
March 28, 2022, 10:23:53 pm by jamaio |
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5U4M/5C4M Rectifiers
Started by 72Blazer |
12 Replies
3756 Views |
March 27, 2022, 08:08:42 pm by mresistor |
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EF86 Variable Screen Bypass Capacitor
Started by PharmRock |
7 Replies
2836 Views |
March 27, 2022, 11:52:34 am by PharmRock |
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Pro Reverb that says it's a Twin?
Started by JB |
8 Replies
2055 Views |
March 27, 2022, 11:45:22 am by JB |
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Vibration Induced bias runaway?
Started by Dyerseve726 |
16 Replies
4059 Views |
March 26, 2022, 01:52:29 pm by shooter |
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Where to get good TUBES
Started by schturlan |
30 Replies
5407 Views |
March 26, 2022, 10:01:42 am by j_bruce |
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Common cathode preamp stages
Started by lantertronics |
0 Replies
1673 Views |
March 26, 2022, 03:05:26 am by lantertronics |
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Parallel 6.3V wiring (6922)
Started by dwinstonwood |
12 Replies
3351 Views |
March 25, 2022, 11:16:39 am by dwinstonwood |
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Supro 6606 Build - Sluckey Layout
Started by ebulakowski |
3 Replies
1798 Views |
March 25, 2022, 11:00:42 am by ebulakowski |
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PI tube type concerns.
Started by joesatch |
4 Replies
1783 Views |
March 25, 2022, 10:22:52 am by joesatch |
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6 Replies
2008 Views |
March 25, 2022, 02:56:27 am by kagliostro |
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2 Replies
1544 Views |
March 25, 2022, 02:47:45 am by kagliostro |
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Adding electrolytic in series...
Started by Stuff4bikes |
8 Replies
2478 Views |
March 24, 2022, 08:21:25 pm by Stuff4bikes |
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PA amp to guitar amp convertion.
Started by distortionhead |
23 Replies
4914 Views |
March 24, 2022, 01:47:16 pm by kagliostro |
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7 Replies
2537 Views |
March 24, 2022, 09:53:46 am by PharmRock |
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Buying power transformers
Started by AmberB |
20 Replies
5024 Views |
March 23, 2022, 10:21:03 pm by ok_state_blues |
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Ampeg B15S Buzz
Started by sjwood3 |
15 Replies
3878 Views |
March 23, 2022, 09:50:52 pm by AmberB |
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Repurpose Peavey PT
Started by joesatch |
11 Replies
2626 Views |
March 23, 2022, 03:04:10 pm by joesatch |
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Power transformer "custom" wiring
Started by Marc |
2 Replies
1754 Views |
March 23, 2022, 08:12:57 am by Marc |
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5 Replies
2991 Views |
March 23, 2022, 06:46:12 am by shooter |
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Blues Jr. Dummy Load
Started by dpm309 |
5 Replies
3439 Views |
March 22, 2022, 10:06:25 pm by acheld |
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70 Replies
25244 Views |
March 22, 2022, 07:59:06 pm by HotBluePlates |
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Mojotone 5E5-A "Pro Amp" Bias Questions
Started by 72Blazer |
47 Replies
7400 Views |
March 22, 2022, 07:50:58 pm by HotBluePlates |
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120 VAC power amp, 240 VAC preamp?
Started by markmalin |
8 Replies
2346 Views |
March 22, 2022, 08:12:10 am by markmalin |
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22 Replies
6860 Views |
March 21, 2022, 08:09:11 pm by HotBluePlates |
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Suggestions for a low watt amp
Started by liddokun |
39 Replies
10245 Views |
March 21, 2022, 11:30:30 am by liddokun |
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60 cycle hum
Started by Bieworm |
19 Replies
4531 Views |
March 21, 2022, 10:42:35 am by Bieworm |
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