Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:46:52 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:46:52 am | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 24 Guests are viewing this board. | ||||
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Not seen this heater wiring before
Started by Jebbyman |
2 Replies
1884 Views |
June 21, 2023, 08:53:55 pmby PRR |
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Rebuilding Premier 90 reverb
Started by luthierwnc |
9 Replies
3173 Views |
June 21, 2023, 06:43:58 pm by luthierwnc |
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Airline 9013A Heater Circuit
Started by bmccowan |
7 Replies
2841 Views |
June 21, 2023, 12:52:15 pm by Platefire |
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19 Replies
3894 Views |
June 20, 2023, 11:04:54 pm by thud33 |
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8 Replies
2786 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
9500 Views |
June 19, 2023, 03:08:13 am by warsavius |
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9 Replies
3121 Views |
June 18, 2023, 03:11:31 pm by Latole |
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4 Replies
1966 Views |
June 18, 2023, 11:55:55 am by EL34 |
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Vox preamp schematic check
Started by fossilshark |
2 Replies
2392 Views |
June 17, 2023, 07:23:34 pm by sluckey |
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16 Replies
4435 Views |
June 17, 2023, 01:57:19 pm by bmccowan |
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Push-pull 6v6 recommendations
Started by nandrewjackson |
10 Replies
2844 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
2743 Views |
June 17, 2023, 09:19:21 am by RadioComm |
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parallel'd ceramic caps
Started by joesatch |
11 Replies
2953 Views |
June 16, 2023, 11:38:38 am by acheld |
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6 Replies
2284 Views |
June 14, 2023, 09:44:15 am by grovesyblues |
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Identifying Oddball Tube Amp Chassis
Started by dtbradio |
13 Replies
3369 Views |
June 14, 2023, 08:35:57 am by mresistor |
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P2P/PCB hybrid ramblings
Started by fossilshark |
4 Replies
2157 Views |
June 14, 2023, 07:14:24 am by fossilshark |
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heater elevation not working
Started by mxrshiver |
9 Replies
3037 Views |
June 13, 2023, 04:18:09 pm by sluckey |
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Series heaters amp question
Started by AmberB |
28 Replies
5164 Views |
June 13, 2023, 02:15:06 pm by AmberB |
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6G6B Treble Potentiometer Question
Started by 72Blazer |
10 Replies
3001 Views |
June 13, 2023, 12:37:47 pm by tubeswell |
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SUNN Sorado Project
Started by AHeck |
10 Replies
3065 Views |
June 13, 2023, 08:47:25 am by kagliostro |
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23 Replies
4992 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
4598 Views |
June 12, 2023, 02:52:57 am by TIMBO |
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AX84 P1-triode mode
Started by isaac_teller |
11 Replies
2968 Views |
June 11, 2023, 03:29:31 pm by PRR |
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Best Octal Socket for KT120
Started by cfortner |
1 Replies
1675 Views |
June 11, 2023, 02:58:01 pm by kagliostro |
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25 Replies
5618 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
3646 Views |
June 10, 2023, 08:19:09 pm by AmberB |
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9 Replies
2899 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
6406 Views |
June 10, 2023, 10:35:27 am by Platefire |
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Dividohm Resistors
Started by passaloutre |
1 Replies
1749 Views |
June 10, 2023, 12:43:37 am by PRR |
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Vintage Power Transformers
Started by HotBluePlates |
6 Replies
4835 Views |
June 09, 2023, 09:29:00 pm by trobbins |
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quick dc heater question
Started by fossilshark |
8 Replies
2376 Views |
June 08, 2023, 01:13:03 am by kagliostro |
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Wendigo preamp noise
Started by fossilshark |
16 Replies
3752 Views |
June 07, 2023, 06:04:31 pm by PRR |
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Phase inverter with EF86
Started by Leevi |
10 Replies
2746 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
7440 Views |
June 07, 2023, 11:17:34 am by pbman1953 |
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28 Replies
4755 Views |
June 07, 2023, 11:01:27 am by Diverted |
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43 Replies
7427 Views |
June 06, 2023, 10:01:16 pm by Champ_49 |
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isolate the ground?
Started by joesatch |
25 Replies
4919 Views |
June 06, 2023, 11:23:03 am by Williamblake |
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Split Cathodes
Started by shaun |
14 Replies
3447 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
1717 Views |
June 05, 2023, 07:32:16 pm by sluckey |
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Name the component
Started by Lectroid |
10 Replies
3076 Views |
June 05, 2023, 09:58:53 am by Lectroid |
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Good tube-amp-oriented podcast
Started by Lectroid |
1 Replies
1935 Views |
June 04, 2023, 08:35:53 pm by passaloutre |
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small chassis layout
Started by joesatch |
8 Replies
2796 Views |
June 04, 2023, 07:15:03 pm by sluckey |
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smaller AB761
Started by Beezerboy |
10 Replies
3442 Views |
June 04, 2023, 12:56:17 pm by Beezerboy |
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0 Replies
1611 Views |
June 04, 2023, 09:42:08 am by marshallguy |
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KT90EH biasing discrepancy
Started by marshallguy |
5 Replies
2562 Views |
June 04, 2023, 08:46:48 am by marshallguy |
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Marshall DSL 20R
Started by luthiernc |
0 Replies
1746 Views |
June 03, 2023, 06:05:45 am by luthiernc |
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13 Replies
3106 Views |
June 02, 2023, 02:00:46 pm by PRR |
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Parallel triode Rg values
Started by Esquirefreak |
3 Replies
1847 Views |
June 01, 2023, 01:42:27 pm by Esquirefreak |
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8 Replies
3353 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
2861 Views |
May 31, 2023, 10:31:13 pm by sluckey |
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