Welcome To the Hoffman Amplifiers Forum
October 24, 2025, 03:18:10 am
Welcome To the Hoffman Amplifiers ForumOctober 24, 2025, 03:18:10 am | ||
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Rattle in my speakers
Started by 67polara |
8 Replies
3939 Views |
January 23, 2011, 08:13:28 amby nateflanigan |
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5879 Princeton build
Started by firemedic |
27 Replies
11213 Views |
January 23, 2011, 12:14:09 am by firemedic |
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Adding VVR to fixed bias amps
Started by TIMBO |
8 Replies
7668 Views |
January 23, 2011, 12:12:27 am by jojokeo |
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Adding a VVR to 18w amp
Started by TIMBO |
10 Replies
5862 Views |
January 23, 2011, 12:07:37 am by jojokeo |
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Bias range.. which resistor ?
Started by worth |
9 Replies
9931 Views |
January 22, 2011, 06:26:14 am by Jack1962 |
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PT mA rating
Started by Willabe |
28 Replies
10656 Views |
January 22, 2011, 12:00:48 am by 67polara |
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5Ar4 wiring twist
Started by Bub |
2 Replies
2807 Views |
January 21, 2011, 09:11:35 pm by Bub |
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can anyone help ac30/6 problems
Started by bakerlite |
6 Replies
4601 Views |
January 21, 2011, 03:34:05 pm by archaos |
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6-pin Marshall power switch
Started by firemedic |
3 Replies
3234 Views |
January 21, 2011, 12:12:47 pm by firemedic |
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BF Princeton Reverb AA764 ?
Started by Willabe |
3 Replies
3409 Views |
January 21, 2011, 03:31:22 am by tubeswell |
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16 Replies
5902 Views |
January 20, 2011, 03:50:23 pm by bluesbear |
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Touchy volume pot in vibroverb build
Started by Norwatt |
4 Replies
3462 Views |
January 20, 2011, 07:12:11 am by Geezer |
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crate vintage club 60 power transformer help
Started by bigj |
7 Replies
9005 Views |
January 20, 2011, 03:41:54 am by mrm0to |
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4 Replies
5842 Views |
January 19, 2011, 03:34:45 pm by ernie_jr |
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Link to the tone stacks
Started by Tone Junkie |
6 Replies
3623 Views |
January 19, 2011, 11:38:48 am by drumslinger2000 |
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12 Replies
5752 Views |
January 18, 2011, 07:43:42 pm by moody |
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Tone stack comparison ?
Started by tubenit |
14 Replies
6959 Views |
January 18, 2011, 01:25:37 pm by jjasilli |
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The quality of "old" caps
Started by Geezer |
41 Replies
11580 Views |
January 18, 2011, 12:11:02 pm by sluckey |
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New 5C3 Build...
Started by Trevor_Long |
7 Replies
4471 Views |
January 18, 2011, 09:39:28 am by Frankenamp |
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12AT7 VS 12AX7 in PI
Started by 67polara |
10 Replies
7499 Views |
January 18, 2011, 07:58:42 am by HotBluePlates |
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2 Replies
3119 Views |
January 18, 2011, 07:58:17 am by fiftynine |
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4 Replies
3185 Views |
January 17, 2011, 08:46:31 pm by Fresh_Start |
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Diode Substitution?
Started by samato |
2 Replies
3099 Views |
January 17, 2011, 05:35:56 pm by samato |
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Power Scaling in General
Started by fiftynine |
6 Replies
4097 Views |
January 17, 2011, 05:16:15 pm by fiftynine |
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28 Replies
13882 Views |
January 17, 2011, 03:57:28 pm by phsyconoodler |
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5 Replies
3657 Views |
January 17, 2011, 12:10:02 pm by FYL |
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7 Replies
3558 Views |
January 17, 2011, 03:57:31 am by kagliostro |
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Parallel resister math
Started by Tone Junkie |
8 Replies
4226 Views |
January 17, 2011, 01:03:16 am by Tone Junkie |
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Elroy Jetson's Geetar Amp?
Started by DummyLoad |
2 Replies
3548 Views |
January 15, 2011, 12:15:44 am by DummyLoad |
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Pin 1 on EL34/kt77 Grounded?
Started by 67polara |
5 Replies
5258 Views |
January 14, 2011, 06:39:45 pm by FYL |
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My old Heath 2-12 combo
Started by phsyconoodler |
2 Replies
2867 Views |
January 14, 2011, 10:46:55 am by Platefire |
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9 Replies
5983 Views |
January 14, 2011, 10:13:47 am by Willabe |
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Valve universal wiring
Started by FYL |
4 Replies
3138 Views |
January 14, 2011, 07:03:27 am by stingray_65 |
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screen/grid resistor
Started by jeff |
1 Replies
2780 Views |
January 13, 2011, 10:10:52 pm by sluckey |
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6 Replies
4707 Views |
January 13, 2011, 06:10:42 pm by FYL |
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8 Replies
5053 Views |
January 13, 2011, 05:45:11 pm by DummyLoad |
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Circuit Board/Baffle Board Rattle?
Started by heymymy |
3 Replies
3627 Views |
January 13, 2011, 12:10:26 pm by phsyconoodler |
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350ka pot w/ 70% tap
Started by punkykatt |
3 Replies
2888 Views |
January 13, 2011, 10:45:23 am by punkykatt |
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Sovtek Mig-50
Started by Leevi |
5 Replies
7442 Views |
January 13, 2011, 10:28:22 am by plexi50 |
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6G15 Input Question (FX loop operation)
Started by Dave |
10 Replies
5640 Views |
January 13, 2011, 08:14:59 am by Dave |
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Vacuum Tube base glue
Started by Tiny_Daddy |
8 Replies
8271 Views |
January 13, 2011, 07:58:19 am by supro66 |
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Are these the same?
Started by tubenit |
15 Replies
7540 Views |
January 13, 2011, 01:40:39 am by J Rindt |
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Champ idea/question 6v6/6l6
Started by Madison |
2 Replies
2939 Views |
January 12, 2011, 10:27:31 pm by Madison |
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SS Power Transformers?
Started by plexi50 |
7 Replies
3649 Views |
January 12, 2011, 10:25:54 pm by plexi50 |
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Flot-A-Tone Spy amp mysteries
Started by Packerswin14 |
8 Replies
5605 Views |
January 12, 2011, 09:14:17 pm by PRR |
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Noise in Stout
Started by Walrus |
8 Replies
3927 Views |
January 12, 2011, 08:03:31 pm by Walrus |
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Climax... Trainwreck...??
Started by crashtm1 |
2 Replies
4123 Views |
January 12, 2011, 06:07:19 pm by crashtm1 |
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Filter cap replacement values
Started by pbman1953 |
5 Replies
4381 Views |
January 12, 2011, 03:50:32 pm by pbman1953 |
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1 tube reverb and the TOS
Started by 67polara |
4 Replies
3102 Views |
January 12, 2011, 11:55:00 am by tubenit |
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Bias voltage
Started by jeff |
7 Replies
4592 Views |
January 11, 2011, 09:52:41 pm by stingray_65 |
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