Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 10:03:55 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 10:03:55 am | ||
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| 0 Members and 21 Guests are viewing this board. | ||||
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Stealth amp
Started by Sonny ReVerb |
9 Replies
3091 Views |
November 30, 2021, 02:45:52 pmby Sonny ReVerb |
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Bias help 6l6 models
Started by joesatch |
9 Replies
4337 Views |
November 30, 2021, 02:14:18 pm by dude |
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Fliptops TM1/M1-R Tremelo Wiring
Started by plexi50 |
6 Replies
2581 Views |
November 29, 2021, 06:50:41 pm by plexi50 |
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Tube amp startup hum
Started by Miyagi_83 |
27 Replies
5330 Views |
November 29, 2021, 03:07:18 pm by Miyagi_83 |
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4 Replies
1696 Views |
November 29, 2021, 01:48:49 pm by Stuff4bikes |
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How does this phase inverter work?
Started by isaac_teller |
5 Replies
2161 Views |
November 28, 2021, 12:46:23 am by isaac_teller |
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32 Replies
4909 Views |
November 27, 2021, 05:11:53 pm by TigerTrading2021 |
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10 Replies
3191 Views |
November 27, 2021, 02:51:07 pm by tmknight |
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Grid stoppers?
Started by Stuff4bikes |
6 Replies
3065 Views |
November 26, 2021, 05:14:32 pm by Stuff4bikes |
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Unusual Hum/Buzz
Started by svejkist |
20 Replies
4131 Views |
November 26, 2021, 03:39:56 pm by svejkist |
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How much to a$k ?
Started by jewishjay |
9 Replies
2611 Views |
November 26, 2021, 11:02:29 am by PRR |
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Adding VVR and Pentode preamp stage
Started by 1blueheron |
10 Replies
2964 Views |
November 26, 2021, 07:50:36 am by 1blueheron |
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17 Replies
3823 Views |
November 25, 2021, 10:39:14 am by uki |
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bleeder resistors
Started by Bieworm |
5 Replies
3697 Views |
November 23, 2021, 04:10:28 pm by trobbins |
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25 Replies
7922 Views |
November 23, 2021, 02:38:27 pm by HotBluePlates |
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Oddball tubes - eccentric circuitry
Started by tschwarz |
2 Replies
1573 Views |
November 23, 2021, 01:29:02 pm by PRR |
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An option for pf value caps
Started by SILVERGUN |
6 Replies
2062 Views |
November 23, 2021, 12:33:43 pm by PRR |
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Tone King Imperial PI Question
Started by johngovan |
9 Replies
2520 Views |
November 22, 2021, 05:24:41 pm by johngovan |
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1 Replies
1465 Views |
November 22, 2021, 03:25:33 pm by uki |
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6G3 master volume
Started by suncrest |
15 Replies
3709 Views |
November 22, 2021, 10:12:02 am by SILVERGUN |
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What type of phase inversion is this
Started by Stuff4bikes |
7 Replies
2825 Views |
November 22, 2021, 05:57:21 am by HotBluePlates |
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Traynor YBA-1A 6550 Bias Question
Started by plumcrazyfx |
6 Replies
2487 Views |
November 21, 2021, 04:55:33 pm by plumcrazyfx |
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2 Replies
1584 Views |
November 21, 2021, 10:11:26 am by swingarm |
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Bogen K10 Master Volume
Started by Ifudontlikebees |
6 Replies
2192 Views |
November 21, 2021, 03:11:43 am by Ifudontlikebees |
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1973 Princeton With Very Sensitive Reverb
Started by Pinball |
1 Replies
1389 Views |
November 20, 2021, 09:45:25 pm by sluckey |
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PT 240v to 120v tap wiring
Started by shaun |
2 Replies
1626 Views |
November 20, 2021, 08:49:25 pm by shaun |
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"Type 3" PPIMV mod. Is this correct?
Started by 1blueheron |
6 Replies
2839 Views |
November 20, 2021, 12:37:41 pm by 1blueheron |
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Theory behind this power supply?
Started by 1blueheron |
10 Replies
3052 Views |
November 20, 2021, 10:51:17 am by 1blueheron |
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Reverb Driver Transformer
Started by scstill |
1 Replies
1601 Views |
November 19, 2021, 05:20:20 pm by sluckey |
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EL84 Kinda A Trainwreck B+ Question
Started by AHeck |
8 Replies
2618 Views |
November 19, 2021, 10:11:07 am by sluckey |
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Elevating **DC** heater supplies
Started by Craftyjam |
34 Replies
5819 Views |
November 18, 2021, 10:24:51 pm by TigerTrading2021 |
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Grounding diodes on tubes
Started by Stuff4bikes |
2 Replies
1558 Views |
November 18, 2021, 07:35:10 pm by Stuff4bikes |
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NTC Thermistor question
Started by Esquirefreak |
7 Replies
3271 Views |
November 17, 2021, 03:27:54 pm by trobbins |
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32 Replies
5510 Views |
November 17, 2021, 06:55:47 am by shooter |
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Bias issue Fender 6G2
Started by Diverted |
2 Replies
1658 Views |
November 16, 2021, 04:30:46 pm by Diverted |
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My Princeton Reverb Build
Started by dragonbat13 |
13 Replies
3981 Views |
November 15, 2021, 08:33:46 pm by dragonbat13 |
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filament and fuse wiring
Started by scstill |
1 Replies
2362 Views |
November 15, 2021, 09:44:37 am by sluckey |
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48 Replies
24295 Views |
November 13, 2021, 10:22:41 am by frankenxtein |
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Marshall 2204 6v6
Started by dude |
4 Replies
2212 Views |
November 13, 2021, 12:30:05 am by Auke Jolman |
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AB763 Tremolo smoothing cap?
Started by Esquirefreak |
1 Replies
1588 Views |
November 12, 2021, 05:15:40 pm by sluckey |
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PT stray voltage?
Started by BrassElephant |
14 Replies
3301 Views |
November 12, 2021, 02:48:58 pm by BrassElephant |
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Marshall Major, too low power
Started by Leevi |
2 Replies
1722 Views |
November 12, 2021, 11:46:33 am by Leevi |
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5 Replies
4370 Views |
November 12, 2021, 09:25:31 am by tubenit |
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Mills MRA12
Started by Vlada |
6 Replies
2507 Views |
November 12, 2021, 03:35:05 am by pdf64 |
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motorboating only while warming up?
Started by thetragichero |
5 Replies
2232 Views |
November 11, 2021, 07:07:27 pm by DougGuy |
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34 Replies
6493 Views |
November 11, 2021, 02:31:25 pm by DougGuy |
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My AB763 doesn't like NFB
Started by Blind Lemon « 1 2 3 4 » |
174 Replies
22664 Views |
November 10, 2021, 06:59:13 pm by Soulfetish |
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Rectifier limiting resistors
Started by Ross |
3 Replies
1770 Views |
November 09, 2021, 07:09:15 pm by HotBluePlates |
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6G3 build: oscillation solved?
Started by Bieworm |
14 Replies
3571 Views |
November 09, 2021, 01:06:34 pm by Bieworm |
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Hoffman vs RobRob 5f6a layout
Started by LPJr |
6 Replies
2219 Views |
November 09, 2021, 07:24:25 am by EL34 |
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