Welcome To the Hoffman Amplifiers Forum
April 25, 2026, 10:29:06 pm
Welcome To the Hoffman Amplifiers ForumApril 25, 2026, 10:29:06 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 34 Guests are viewing this board. | ||||
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Airline 9013A Heater Circuit
Started by bmccowan |
7 Replies
4459 Views |
June 21, 2023, 12:52:15 pmby Platefire |
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19 Replies
5731 Views |
June 20, 2023, 11:04:54 pm by thud33 |
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8 Replies
4322 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
12853 Views |
June 19, 2023, 03:08:13 am by warsavius |
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9 Replies
4748 Views |
June 18, 2023, 03:11:31 pm by Latole |
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4 Replies
3226 Views |
June 18, 2023, 11:55:55 am by EL34 |
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Vox preamp schematic check
Started by fossilshark |
2 Replies
3565 Views |
June 17, 2023, 07:23:34 pm by sluckey |
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16 Replies
6565 Views |
June 17, 2023, 01:57:19 pm by bmccowan |
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Push-pull 6v6 recommendations
Started by nandrewjackson |
10 Replies
4324 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
4311 Views |
June 17, 2023, 09:19:21 am by RadioComm |
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parallel'd ceramic caps
Started by joesatch |
11 Replies
4719 Views |
June 16, 2023, 11:38:38 am by acheld |
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6 Replies
3411 Views |
June 14, 2023, 09:44:15 am by grovesyblues |
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Identifying Oddball Tube Amp Chassis
Started by dtbradio |
13 Replies
5350 Views |
June 14, 2023, 08:35:57 am by mresistor |
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P2P/PCB hybrid ramblings
Started by fossilshark |
4 Replies
4262 Views |
June 14, 2023, 07:14:24 am by fossilshark |
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heater elevation not working
Started by mxrshiver |
9 Replies
4425 Views |
June 13, 2023, 04:18:09 pm by sluckey |
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Series heaters amp question
Started by AmberB |
28 Replies
8629 Views |
June 13, 2023, 02:15:06 pm by AmberB |
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6G6B Treble Potentiometer Question
Started by 72Blazer |
10 Replies
4924 Views |
June 13, 2023, 12:37:47 pm by tubeswell |
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SUNN Sorado Project
Started by AHeck |
10 Replies
4874 Views |
June 13, 2023, 08:47:25 am by kagliostro |
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23 Replies
7825 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
7371 Views |
June 12, 2023, 02:52:57 am by TIMBO |
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AX84 P1-triode mode
Started by isaac_teller |
11 Replies
4736 Views |
June 11, 2023, 03:29:31 pm by PRR |
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Best Octal Socket for KT120
Started by cfortner |
1 Replies
2533 Views |
June 11, 2023, 02:58:01 pm by kagliostro |
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25 Replies
9191 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
5682 Views |
June 10, 2023, 08:19:09 pm by AmberB |
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9 Replies
4169 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
9673 Views |
June 10, 2023, 10:35:27 am by Platefire |
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Dividohm Resistors
Started by passaloutre |
1 Replies
2899 Views |
June 10, 2023, 12:43:37 am by PRR |
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Vintage Power Transformers
Started by HotBluePlates |
6 Replies
7190 Views |
June 09, 2023, 09:29:00 pm by trobbins |
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quick dc heater question
Started by fossilshark |
8 Replies
3997 Views |
June 08, 2023, 01:13:03 am by kagliostro |
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Wendigo preamp noise
Started by fossilshark |
16 Replies
5900 Views |
June 07, 2023, 06:04:31 pm by PRR |
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Phase inverter with EF86
Started by Leevi |
10 Replies
3973 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
11781 Views |
June 07, 2023, 11:17:34 am by pbman1953 |
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28 Replies
7988 Views |
June 07, 2023, 11:01:27 am by Diverted |
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43 Replies
13840 Views |
June 06, 2023, 10:01:16 pm by Champ_49 |
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isolate the ground?
Started by joesatch |
25 Replies
10164 Views |
June 06, 2023, 11:23:03 am by Williamblake |
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Split Cathodes
Started by shaun |
14 Replies
5892 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
2821 Views |
June 05, 2023, 07:32:16 pm by sluckey |
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Name the component
Started by Lectroid |
10 Replies
5148 Views |
June 05, 2023, 09:58:53 am by Lectroid |
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Good tube-amp-oriented podcast
Started by Lectroid |
1 Replies
3445 Views |
June 04, 2023, 08:35:53 pm by passaloutre |
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small chassis layout
Started by joesatch |
8 Replies
4432 Views |
June 04, 2023, 07:15:03 pm by sluckey |
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smaller AB761
Started by Beezerboy |
10 Replies
5035 Views |
June 04, 2023, 12:56:17 pm by Beezerboy |
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0 Replies
2522 Views |
June 04, 2023, 09:42:08 am by marshallguy |
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KT90EH biasing discrepancy
Started by marshallguy |
5 Replies
4094 Views |
June 04, 2023, 08:46:48 am by marshallguy |
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Marshall DSL 20R
Started by luthiernc |
0 Replies
2937 Views |
June 03, 2023, 06:05:45 am by luthiernc |
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13 Replies
5410 Views |
June 02, 2023, 02:00:46 pm by PRR |
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Parallel triode Rg values
Started by Esquirefreak |
3 Replies
3161 Views |
June 01, 2023, 01:42:27 pm by Esquirefreak |
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8 Replies
5637 Views |
June 01, 2023, 12:51:18 pm by tubeswell |
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Vox AC-15 Vibrato channel low volume
Started by sluckey |
8 Replies
5282 Views |
May 31, 2023, 10:31:13 pm by sluckey |
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8 Replies
4889 Views |
May 31, 2023, 04:59:27 pm by fossilshark |
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Bias Calculations for Cathode bias??
Started by Jalmeida |
10 Replies
5677 Views |
May 31, 2023, 11:02:58 am by Lectroid |
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