Welcome To the Hoffman Amplifiers Forum
March 13, 2026, 12:59:54 am
Welcome To the Hoffman Amplifiers ForumMarch 13, 2026, 12:59:54 am | ||
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Power and Output Transformers
Started by WillieBoy |
3 Replies
4388 Views |
January 29, 2011, 01:16:04 amby zendragon63 |
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41 Replies
16586 Views |
January 29, 2011, 12:33:03 am by DummyLoad |
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Help Needed with Bias Voltage
Started by samato |
6 Replies
4767 Views |
January 28, 2011, 11:53:09 pm by tubeswell |
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S.E. amps and voltages
Started by rzenc |
7 Replies
4966 Views |
January 28, 2011, 08:22:53 pm by rzenc |
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18 Watt PI
Started by jeff |
1 Replies
3259 Views |
January 28, 2011, 06:09:07 am by sluckey |
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Fusing for europe
Started by Quatro |
1 Replies
3071 Views |
January 27, 2011, 09:20:05 pm by PRR |
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Tweed BluezMeister combo (small)
Started by tubenit |
14 Replies
8195 Views |
January 27, 2011, 08:21:40 pm by drumslinger2000 |
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5879SE new issue
Started by firemedic |
6 Replies
4711 Views |
January 27, 2011, 06:41:06 pm by PRR |
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Swiches and Switching cathode caps
Started by J Rindt |
14 Replies
7014 Views |
January 27, 2011, 01:47:23 pm by kagliostro |
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Princeton Reverb w/ 4 x 6V6
Started by DummyLoad |
5 Replies
5908 Views |
January 27, 2011, 12:02:55 pm by jjasilli |
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The Burger King 5-6-7
Started by DummyLoad |
8 Replies
7921 Views |
January 26, 2011, 11:00:50 pm by DummyLoad |
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6 Replies
9364 Views |
January 26, 2011, 10:42:48 pm by DummyLoad |
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5E3 iron specs
Started by rzenc |
43 Replies
19748 Views |
January 26, 2011, 08:14:15 am by samato |
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9 Replies
6730 Views |
January 25, 2011, 07:07:35 pm by Willabe |
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Has anyone built this tone circuit?
Started by Casey4s |
2 Replies
3491 Views |
January 25, 2011, 01:24:23 pm by PRR |
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3 Replies
4091 Views |
January 25, 2011, 01:06:45 pm by PRR |
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Best way to add 470k in series?
Started by frank57 |
2 Replies
3394 Views |
January 25, 2011, 07:20:01 am by frank57 |
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YSR1 Traynor 67-72?
Started by plexi50 |
5 Replies
5411 Views |
January 24, 2011, 10:35:20 am by plexi50 |
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8 Replies
5971 Views |
January 24, 2011, 07:08:00 am by guitarhvac |
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Vox Cambridge "re-build" ideas
Started by nateflanigan |
3 Replies
3858 Views |
January 24, 2011, 01:53:02 am by TIMBO |
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Line out with multitap OPT
Started by chuggy |
1 Replies
3599 Views |
January 23, 2011, 05:53:07 pm by JayB |
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Univox U-42 Schematic??? FOUND
Started by jjasilli |
1 Replies
4916 Views |
January 23, 2011, 02:21:21 pm by jjasilli |
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Jet city amp Problems
Started by frank57 |
12 Replies
10723 Views |
January 23, 2011, 12:25:55 pm by frank57 |
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1M Pot + On/Off Switch
Started by J Rindt |
7 Replies
5465 Views |
January 23, 2011, 10:02:25 am by jojokeo |
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finished Harmonic Vibe-in-a-box
Started by Danskman |
17 Replies
7905 Views |
January 23, 2011, 08:18:19 am by Danskman |
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Rattle in my speakers
Started by 67polara |
8 Replies
5133 Views |
January 23, 2011, 08:13:28 am by nateflanigan |
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5879 Princeton build
Started by firemedic |
27 Replies
13577 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
8923 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
7145 Views |
January 23, 2011, 12:07:37 am by jojokeo |
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Bias range.. which resistor ?
Started by worth |
9 Replies
11060 Views |
January 22, 2011, 06:26:14 am by Jack1962 |
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PT mA rating
Started by Willabe |
28 Replies
13706 Views |
January 22, 2011, 12:00:48 am by 67polara |
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5Ar4 wiring twist
Started by Bub |
2 Replies
3738 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
5686 Views |
January 21, 2011, 03:34:05 pm by archaos |
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6-pin Marshall power switch
Started by firemedic |
3 Replies
4208 Views |
January 21, 2011, 12:12:47 pm by firemedic |
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BF Princeton Reverb AA764 ?
Started by Willabe |
3 Replies
4313 Views |
January 21, 2011, 03:31:22 am by tubeswell |
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16 Replies
7319 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
4746 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
10421 Views |
January 20, 2011, 03:41:54 am by mrm0to |
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4 Replies
6928 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
4721 Views |
January 19, 2011, 11:38:48 am by drumslinger2000 |
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12 Replies
7159 Views |
January 18, 2011, 07:43:42 pm by moody |
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Tone stack comparison ?
Started by tubenit |
14 Replies
8863 Views |
January 18, 2011, 01:25:37 pm by jjasilli |
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The quality of "old" caps
Started by Geezer |
41 Replies
14066 Views |
January 18, 2011, 12:11:02 pm by sluckey |
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New 5C3 Build...
Started by Trevor_Long |
7 Replies
5717 Views |
January 18, 2011, 09:39:28 am by Frankenamp |
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12AT7 VS 12AX7 in PI
Started by 67polara |
10 Replies
9224 Views |
January 18, 2011, 07:58:42 am by HotBluePlates |
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2 Replies
3859 Views |
January 18, 2011, 07:58:17 am by fiftynine |
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4 Replies
4270 Views |
January 17, 2011, 08:46:31 pm by Fresh_Start |
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Diode Substitution?
Started by samato |
2 Replies
3746 Views |
January 17, 2011, 05:35:56 pm by samato |
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Power Scaling in General
Started by fiftynine |
6 Replies
5092 Views |
January 17, 2011, 05:16:15 pm by fiftynine |
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28 Replies
15507 Views |
January 17, 2011, 03:57:28 pm by phsyconoodler |
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