Welcome To the Hoffman Amplifiers Forum
December 09, 2025, 08:39:43 am
Welcome To the Hoffman Amplifiers ForumDecember 09, 2025, 08:39:43 am | ||
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Blackface Vibro Champ mystery cap?
Started by blueznet |
11 Replies
6046 Views |
September 09, 2011, 08:04:41 amby jjasilli |
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Intentional impedance mismatch questions
Started by osing |
4 Replies
4219 Views |
September 08, 2011, 10:07:03 pm by HotBluePlates |
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Transformers PT vs OT
Started by Ed_Chambley |
3 Replies
2633 Views |
September 08, 2011, 05:46:46 am by FYL |
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Fender RI Reverb hand wired conversion kit?
Started by chuggy |
1 Replies
2739 Views |
September 06, 2011, 10:14:34 pm by sluckey |
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12 Replies
6206 Views |
September 06, 2011, 09:27:46 pm by Matty_V |
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Laney, schematics and books.
Started by Lennart |
31 Replies
14672 Views |
September 06, 2011, 12:50:59 pm by Lennart |
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Hot Rod Deville crackle
Started by Tiny_Daddy |
9 Replies
4929 Views |
September 06, 2011, 11:53:25 am by rzenc |
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AB763 with 4x6V6
Started by rzenc |
7 Replies
5246 Views |
September 05, 2011, 06:56:17 pm by DummyLoad |
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Non Polarized Filter Caps
Started by dpm309 |
16 Replies
6689 Views |
September 05, 2011, 04:06:52 pm by FYL |
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Doubled triode?
Started by 67polara |
11 Replies
5142 Views |
September 05, 2011, 03:12:08 pm by tubeswell |
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Blues Jr - cathode bias mod?
Started by bluesbear |
10 Replies
6711 Views |
September 05, 2011, 12:23:28 pm by John |
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MOVED: which tool ?
Started by tubenit |
0 Replies
2531 Views |
September 05, 2011, 07:39:52 am by tubenit |
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Fresh new AB165 build
Started by Danskman |
7 Replies
3755 Views |
September 05, 2011, 04:17:38 am by tubeswell |
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Master Volume type 3 help
Started by Megachunk |
13 Replies
7714 Views |
September 04, 2011, 11:37:43 am by sluckey |
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NOS Stancor PT ???
Started by zapped |
7 Replies
4939 Views |
September 04, 2011, 11:07:33 am by jjasilli |
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Problem biasing for correct voltage
Started by dude |
27 Replies
9545 Views |
September 03, 2011, 12:20:46 pm by dude |
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Now the noise
Started by Matty_V |
16 Replies
5383 Views |
September 03, 2011, 11:18:36 am by dpm309 |
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0 Replies
2485 Views |
September 03, 2011, 07:04:38 am by EL34 |
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Help with 2204 please!
Started by Matty_V |
16 Replies
5597 Views |
September 02, 2011, 11:11:50 pm by Matty_V |
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Carolina SongBird PLUS
Started by tubenit |
1 Replies
2850 Views |
September 02, 2011, 10:33:43 pm by sdp1234 |
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AC30 Plus Deluxe Reverb
Started by Ed_Chambley |
19 Replies
8169 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
3242 Views |
September 02, 2011, 10:47:25 am by eleventeen |
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15 Replies
20707 Views |
September 01, 2011, 05:31:27 pm by jojokeo |
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voltages on a schematic
Started by dude |
3 Replies
3063 Views |
September 01, 2011, 02:58:19 pm by stratele52 |
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4 Replies
3217 Views |
September 01, 2011, 01:59:22 am by kagliostro |
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PI problem
Started by Matty_V |
12 Replies
4355 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
3725 Views |
August 31, 2011, 03:31:00 pm by dixiepig |
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Vibro Champ Heater Wiring?
Started by blueznet |
11 Replies
9429 Views |
August 31, 2011, 01:11:07 pm by xm52 |
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2204 SE done!
Started by Madison |
20 Replies
7303 Views |
August 31, 2011, 07:51:27 am by Madison |
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Pot Problem Question
Started by Ed_Chambley |
8 Replies
3673 Views |
August 31, 2011, 06:16:59 am by frankeg |
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Pot substitution question
Started by mpayne |
1 Replies
2406 Views |
August 31, 2011, 12:24:44 am by PRR |
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jcm 900 slx 50w issues
Started by 961le |
4 Replies
3597 Views |
August 30, 2011, 08:43:05 pm by 961le |
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eletrolytic radial vs axial
Started by tcoil |
2 Replies
2969 Views |
August 29, 2011, 11:04:09 pm by PRR |
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Marshall Jubilee tonestack
Started by RobBozic |
2 Replies
3180 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
2577 Views |
August 29, 2011, 02:27:39 pm by TIMBO |
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"actual" plate voltage ?
Started by worth |
3 Replies
3444 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
6862 Views |
August 29, 2011, 10:49:34 am by pbman1953 |
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16 Replies
13500 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
6300 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
6162 Views |
August 29, 2011, 12:50:52 am by tubeswell |
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5 Replies
2874 Views |
August 28, 2011, 02:25:18 pm by HotBluePlates |
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transformer damage?
Started by CraigB |
9 Replies
4300 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
5252 Views |
August 28, 2011, 12:33:45 am by Madison |
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PLEXI GAIN 20 with BUZZ
Started by TIMBO |
18 Replies
5334 Views |
August 27, 2011, 03:26:06 pm by TIMBO |
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67 Bassman head pin voltages
Started by Craselaw |
19 Replies
9719 Views |
August 27, 2011, 12:10:32 pm by eleventeen |
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11 Replies
7486 Views |
August 26, 2011, 05:39:34 pm by HotBluePlates |
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Deluxe Reverb problem?
Started by mresistor |
9 Replies
4339 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
9203 Views |
August 25, 2011, 12:43:52 am by PRR |
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power supply help
Started by ernie_jr |
9 Replies
4128 Views |
August 24, 2011, 11:55:31 pm by PRR |
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3 Replies
5416 Views |
August 24, 2011, 11:17:19 pm by stingray_65 |
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