Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 10:39:55 am
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 10:39:55 am | ||
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RMS vs Average volts with DC offset
Started by DuaneOh |
25 Replies
5832 Views |
June 24, 2023, 09:57:05 pmby PRR |
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New silvertone 1482 build, trem issues
Started by munkeyboy |
13 Replies
4278 Views |
June 24, 2023, 01:49:52 pm by munkeyboy |
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RobRob RR800 build
Started by Rontone |
33 Replies
7765 Views |
June 24, 2023, 11:46:51 am by Rontone |
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KT120 Rg = input impedance?
Started by cfortner |
16 Replies
3674 Views |
June 23, 2023, 01:20:52 pm by tubeswell |
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Tone stack mods?
Started by fossilshark |
5 Replies
2846 Views |
June 23, 2023, 12:31:23 pm by sluckey |
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Deluxe Reverb without Reverb
Started by roseblood11 |
5 Replies
2928 Views |
June 22, 2023, 02:10:17 pm by sluckey |
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1 Replies
2255 Views |
June 22, 2023, 11:38:30 am by sluckey |
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Not seen this heater wiring before
Started by Jebbyman |
2 Replies
2234 Views |
June 21, 2023, 08:53:55 pm by PRR |
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Rebuilding Premier 90 reverb
Started by luthierwnc |
9 Replies
3769 Views |
June 21, 2023, 06:43:58 pm by luthierwnc |
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Airline 9013A Heater Circuit
Started by bmccowan |
7 Replies
3371 Views |
June 21, 2023, 12:52:15 pm by Platefire |
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19 Replies
4440 Views |
June 20, 2023, 11:04:54 pm by thud33 |
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8 Replies
3238 Views |
June 19, 2023, 08:46:21 am by jhanly |
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hum introduced by channel switcher
Started by Auke Jolman |
32 Replies
10760 Views |
June 19, 2023, 03:08:13 am by warsavius |
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9 Replies
3560 Views |
June 18, 2023, 03:11:31 pm by Latole |
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4 Replies
2274 Views |
June 18, 2023, 11:55:55 am by EL34 |
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Vox preamp schematic check
Started by fossilshark |
2 Replies
2750 Views |
June 17, 2023, 07:23:34 pm by sluckey |
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16 Replies
5156 Views |
June 17, 2023, 01:57:19 pm by bmccowan |
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Push-pull 6v6 recommendations
Started by nandrewjackson |
10 Replies
3327 Views |
June 17, 2023, 10:50:27 am by dogburn |
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Low Volume Princeton Reverb AA764
Started by jonathan_kea |
8 Replies
3285 Views |
June 17, 2023, 09:19:21 am by RadioComm |
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parallel'd ceramic caps
Started by joesatch |
11 Replies
3595 Views |
June 16, 2023, 11:38:38 am by acheld |
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6 Replies
2640 Views |
June 14, 2023, 09:44:15 am by grovesyblues |
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Identifying Oddball Tube Amp Chassis
Started by dtbradio |
13 Replies
4022 Views |
June 14, 2023, 08:35:57 am by mresistor |
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P2P/PCB hybrid ramblings
Started by fossilshark |
4 Replies
2868 Views |
June 14, 2023, 07:14:24 am by fossilshark |
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heater elevation not working
Started by mxrshiver |
9 Replies
3466 Views |
June 13, 2023, 04:18:09 pm by sluckey |
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Series heaters amp question
Started by AmberB |
28 Replies
6397 Views |
June 13, 2023, 02:15:06 pm by AmberB |
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6G6B Treble Potentiometer Question
Started by 72Blazer |
10 Replies
3700 Views |
June 13, 2023, 12:37:47 pm by tubeswell |
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SUNN Sorado Project
Started by AHeck |
10 Replies
3615 Views |
June 13, 2023, 08:47:25 am by kagliostro |
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23 Replies
6073 Views |
June 12, 2023, 01:40:05 pm by plexi50 |
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What kind of tube sockets are these?
Started by pullshocks |
23 Replies
5642 Views |
June 12, 2023, 02:52:57 am by TIMBO |
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AX84 P1-triode mode
Started by isaac_teller |
11 Replies
3564 Views |
June 11, 2023, 03:29:31 pm by PRR |
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Best Octal Socket for KT120
Started by cfortner |
1 Replies
1901 Views |
June 11, 2023, 02:58:01 pm by kagliostro |
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25 Replies
6956 Views |
June 10, 2023, 08:47:17 pm by tubenit |
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Oddball Amp by an Oddball Hacker.
Started by DummyLoad |
13 Replies
4307 Views |
June 10, 2023, 08:19:09 pm by AmberB |
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9 Replies
3301 Views |
June 10, 2023, 08:11:26 pm by sluckey |
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Is this a Real Fender Bassman?
Started by Platefire |
38 Replies
7612 Views |
June 10, 2023, 10:35:27 am by Platefire |
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Dividohm Resistors
Started by passaloutre |
1 Replies
2069 Views |
June 10, 2023, 12:43:37 am by PRR |
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Vintage Power Transformers
Started by HotBluePlates |
6 Replies
5675 Views |
June 09, 2023, 09:29:00 pm by trobbins |
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quick dc heater question
Started by fossilshark |
8 Replies
2853 Views |
June 08, 2023, 01:13:03 am by kagliostro |
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Wendigo preamp noise
Started by fossilshark |
16 Replies
4457 Views |
June 07, 2023, 06:04:31 pm by PRR |
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Phase inverter with EF86
Started by Leevi |
10 Replies
3131 Views |
June 07, 2023, 12:52:05 pm by isaac_teller |
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B15- change or leave parts
Started by pbman1953 |
48 Replies
8842 Views |
June 07, 2023, 11:17:34 am by pbman1953 |
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28 Replies
5710 Views |
June 07, 2023, 11:01:27 am by Diverted |
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43 Replies
9017 Views |
June 06, 2023, 10:01:16 pm by Champ_49 |
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isolate the ground?
Started by joesatch |
25 Replies
5923 Views |
June 06, 2023, 11:23:03 am by Williamblake |
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Split Cathodes
Started by shaun |
14 Replies
4058 Views |
June 05, 2023, 11:15:32 pm by shaun |
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DC heaters and LED pilot light
Started by fossilshark |
1 Replies
1996 Views |
June 05, 2023, 07:32:16 pm by sluckey |
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Name the component
Started by Lectroid |
10 Replies
3761 Views |
June 05, 2023, 09:58:53 am by Lectroid |
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Good tube-amp-oriented podcast
Started by Lectroid |
1 Replies
2383 Views |
June 04, 2023, 08:35:53 pm by passaloutre |
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small chassis layout
Started by joesatch |
8 Replies
3271 Views |
June 04, 2023, 07:15:03 pm by sluckey |
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smaller AB761
Started by Beezerboy |
10 Replies
3877 Views |
June 04, 2023, 12:56:17 pm by Beezerboy |
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