Welcome To the Hoffman Amplifiers Forum
April 28, 2026, 12:47:09 am
Welcome To the Hoffman Amplifiers ForumApril 28, 2026, 12:47:09 am | ||
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Problem biasing for correct voltage
Started by dude |
27 Replies
12353 Views |
September 03, 2011, 12:20:46 pmby dude |
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Now the noise
Started by Matty_V |
16 Replies
7082 Views |
September 03, 2011, 11:18:36 am by dpm309 |
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0 Replies
3547 Views |
September 03, 2011, 07:04:38 am by EL34 |
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Help with 2204 please!
Started by Matty_V |
16 Replies
6859 Views |
September 02, 2011, 11:11:50 pm by Matty_V |
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Carolina SongBird PLUS
Started by tubenit |
1 Replies
3695 Views |
September 02, 2011, 10:33:43 pm by sdp1234 |
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AC30 Plus Deluxe Reverb
Started by Ed_Chambley |
19 Replies
10392 Views |
September 02, 2011, 11:09:39 am by Ed_Chambley |
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5F6A Tweed Bassman Power Transformer
Started by accmeint |
2 Replies
4331 Views |
September 02, 2011, 10:47:25 am by eleventeen |
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15 Replies
23210 Views |
September 01, 2011, 05:31:27 pm by jojokeo |
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voltages on a schematic
Started by dude |
3 Replies
3951 Views |
September 01, 2011, 02:58:19 pm by stratele52 |
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4 Replies
4094 Views |
September 01, 2011, 01:59:22 am by kagliostro |
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PI problem
Started by Matty_V |
12 Replies
5677 Views |
August 31, 2011, 04:52:32 pm by Matty_V |
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022798 PT Orange Shield Wire
Started by dixiepig |
5 Replies
4720 Views |
August 31, 2011, 03:31:00 pm by dixiepig |
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Vibro Champ Heater Wiring?
Started by blueznet |
11 Replies
10913 Views |
August 31, 2011, 01:11:07 pm by xm52 |
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2204 SE done!
Started by Madison |
20 Replies
8939 Views |
August 31, 2011, 07:51:27 am by Madison |
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Pot Problem Question
Started by Ed_Chambley |
8 Replies
4659 Views |
August 31, 2011, 06:16:59 am by frankeg |
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Pot substitution question
Started by mpayne |
1 Replies
3410 Views |
August 31, 2011, 12:24:44 am by PRR |
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jcm 900 slx 50w issues
Started by 961le |
4 Replies
4623 Views |
August 30, 2011, 08:43:05 pm by 961le |
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eletrolytic radial vs axial
Started by tcoil |
2 Replies
4118 Views |
August 29, 2011, 11:04:09 pm by PRR |
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Marshall Jubilee tonestack
Started by RobBozic |
2 Replies
4351 Views |
August 29, 2011, 05:38:19 pm by RobBozic |
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Power Amp Rewire (Plexi Gain 20 )
Started by TIMBO |
2 Replies
3543 Views |
August 29, 2011, 02:27:39 pm by TIMBO |
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"actual" plate voltage ?
Started by worth |
3 Replies
4471 Views |
August 29, 2011, 12:34:16 pm by sluckey |
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My Traynor YBA-3A Super seems weaker
Started by pbman1953 |
18 Replies
8174 Views |
August 29, 2011, 10:49:34 am by pbman1953 |
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16 Replies
15413 Views |
August 29, 2011, 06:58:12 am by kagliostro |
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Boogie 50 Caliber repair
Started by six el six |
13 Replies
7850 Views |
August 29, 2011, 03:33:59 am by six el six |
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parallel output tube bias ?
Started by worth |
16 Replies
7946 Views |
August 29, 2011, 12:50:52 am by tubeswell |
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5 Replies
3866 Views |
August 28, 2011, 02:25:18 pm by HotBluePlates |
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transformer damage?
Started by CraigB |
9 Replies
5541 Views |
August 28, 2011, 12:13:27 pm by CraigB |
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VVR. Entire amp or power section?
Started by Madison |
9 Replies
6477 Views |
August 28, 2011, 12:33:45 am by Madison |
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PLEXI GAIN 20 with BUZZ
Started by TIMBO |
18 Replies
6565 Views |
August 27, 2011, 03:26:06 pm by TIMBO |
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67 Bassman head pin voltages
Started by Craselaw |
19 Replies
11399 Views |
August 27, 2011, 12:10:32 pm by eleventeen |
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11 Replies
8936 Views |
August 26, 2011, 05:39:34 pm by HotBluePlates |
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Deluxe Reverb problem?
Started by mresistor |
9 Replies
5403 Views |
August 26, 2011, 12:53:36 am by Rev D |
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dialing in your NFB tone
Started by tubenit |
17 Replies
10705 Views |
August 25, 2011, 12:43:52 am by PRR |
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power supply help
Started by ernie_jr |
9 Replies
5273 Views |
August 24, 2011, 11:55:31 pm by PRR |
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3 Replies
6550 Views |
August 24, 2011, 11:17:19 pm by stingray_65 |
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More headroom
Started by John |
5 Replies
4592 Views |
August 24, 2011, 09:20:52 pm by HotBluePlates |
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Power Amp in on Marshall 2204?
Started by JustMike |
5 Replies
4626 Views |
August 24, 2011, 12:16:31 pm by Boots Deville |
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TRRI reverb not working
Started by firemedic |
12 Replies
5875 Views |
August 23, 2011, 05:40:15 pm by firemedic |
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17 Replies
16066 Views |
August 22, 2011, 10:48:33 pm by jojokeo |
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Does this work as an adjustable NFB?
Started by Madison |
8 Replies
6660 Views |
August 22, 2011, 09:21:49 am by jjasilli |
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25K - RA POT?
Started by blueznet |
7 Replies
6132 Views |
August 22, 2011, 08:02:50 am by OldHouseScott |
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parallel 6V6 5F1 output primary ?
Started by worth |
6 Replies
5329 Views |
August 20, 2011, 11:52:51 pm by PRR |
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Strange 5F1 build problem
Started by worth |
6 Replies
4377 Views |
August 20, 2011, 04:39:29 pm by eleventeen |
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Hammond S6 Chord Organ
Started by mresistor |
8 Replies
7840 Views |
August 20, 2011, 11:09:23 am by stingray_65 |
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13 Replies
8968 Views |
August 20, 2011, 06:47:11 am by LooseChange |
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Tubes for Sound City 120
Started by telenorman |
9 Replies
9448 Views |
August 20, 2011, 03:18:25 am by overtone |
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Presence control on 5F4
Started by Ed_Chambley |
9 Replies
7963 Views |
August 19, 2011, 10:48:15 pm by Ed_Chambley |
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Kent DR-77 cardboard amp
Started by PRR |
19 Replies
10299 Views |
August 19, 2011, 08:41:36 pm by billcreller |
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Filter caps
Started by J Rindt |
16 Replies
6812 Views |
August 19, 2011, 02:15:12 pm by catnine |
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Princeton Reverb Problem on a new build
Started by KDakaWalt |
14 Replies
7085 Views |
August 19, 2011, 02:14:06 pm by tubeswell |
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