Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 03:09:54 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 03:09:54 am | ||
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| 0 Members and 29 Guests are viewing this board. | ||||
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18watt stout in AO35 chassis
Started by dmp |
18 Replies
2668 Views |
April 15, 2025, 09:50:55 pmby dmp |
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Bias circuit assistance.
Started by joesatch |
4 Replies
942 Views |
April 15, 2025, 12:03:04 pm by tubeswell |
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4 Replies
1230 Views |
April 15, 2025, 11:38:42 am by scstill |
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bias ground
Started by joesatch |
11 Replies
1689 Views |
April 14, 2025, 06:15:32 pm by pdf64 |
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Squeal in the 77 Pentode channel
Started by scstill |
5 Replies
1552 Views |
April 14, 2025, 03:26:08 pm by scstill |
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Robinette JCM 800 Bias Problem
Started by B-Rex |
8 Replies
1275 Views |
April 14, 2025, 01:39:14 pm by B-Rex |
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RF noise filtering
Started by phsyconoodler |
15 Replies
10763 Views |
April 14, 2025, 09:53:04 am by scstill |
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20 Replies
2807 Views |
April 13, 2025, 11:05:28 pm by sec1rlr |
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PT Tap question
Started by joesatch |
1 Replies
883 Views |
April 13, 2025, 08:46:37 pm by tubeswell |
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Hammond AO-44 conversion
Started by tubenit |
7 Replies
1483 Views |
April 13, 2025, 05:37:14 pm by tubenit |
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15 Replies
2574 Views |
April 13, 2025, 02:10:25 pm by wsscott |
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5E3 Kit - Bias Updated
Started by bbmade |
29 Replies
3040 Views |
April 13, 2025, 12:58:33 pm by bbmade |
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6g11 Vibrolux - fixing overdrive
Started by bullkelp |
7 Replies
1424 Views |
April 13, 2025, 08:59:17 am by HotBluePlates |
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AC30C2 volume/gain pots do nothing.
Started by fossilshark |
6 Replies
1421 Views |
April 13, 2025, 04:06:53 am by tubeswell |
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OT primary impedance for push-pull amp
Started by gontek |
19 Replies
2388 Views |
April 12, 2025, 06:14:47 am by Merlin |
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Substitute a 5Y3 for a 5U4?
Started by Lectroid |
8 Replies
1538 Views |
April 11, 2025, 01:35:56 pm by Lectroid |
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rectify AC filament for DC on V1
Started by joesatch |
5 Replies
1309 Views |
April 11, 2025, 12:16:10 pm by Merlin |
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high octane push pull
Started by Beezerboy |
29 Replies
5928 Views |
April 11, 2025, 07:41:57 am by JPK |
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Tweed ODS 5879 Load Line
Started by stevefmt |
1 Replies
954 Views |
April 10, 2025, 08:27:56 pm by tubenit |
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3 Replies
1108 Views |
April 10, 2025, 10:32:36 am by tubeswell |
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5F1 arc in tube 6V6
Started by FREYES_7 |
37 Replies
5043 Views |
April 09, 2025, 12:45:07 pm by FREYES_7 |
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help with channel debug. massive hiss
Started by joesatch |
8 Replies
1389 Views |
April 08, 2025, 10:25:27 pm by joesatch |
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Repairs - Peavey Windsor Studio
Started by Shrek |
6 Replies
1261 Views |
April 08, 2025, 08:09:30 am by Shrek |
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Cathode resistor question
Started by Blooze |
8 Replies
1337 Views |
April 06, 2025, 11:59:08 pm by tubeswell |
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Project "scrap salvage"
Started by stw307 |
11 Replies
2371 Views |
April 06, 2025, 11:35:28 am by stw307 |
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3 Replies
2686 Views |
April 06, 2025, 08:26:56 am by filmdiary |
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1973 Twin Reverb Vibrato Issue
Started by plexi50 |
10 Replies
1541 Views |
April 05, 2025, 06:17:13 pm by plexi50 |
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Princeton Can Capacitor Question
Started by sec1rlr |
8 Replies
1315 Views |
April 05, 2025, 02:54:48 pm by sec1rlr |
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Relay switching grounding
Started by Jennings |
6 Replies
1095 Views |
April 05, 2025, 02:10:49 pm by Jennings |
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12 Replies
1414 Views |
April 05, 2025, 02:03:40 pm by HotBluePlates |
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19 Replies
2281 Views |
April 05, 2025, 09:55:47 am by HotBluePlates |
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Which Choke?
Started by passaloutre |
9 Replies
1215 Views |
April 05, 2025, 07:37:42 am by DummyLoad |
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136 Replies
11013 Views |
April 04, 2025, 10:19:20 am by wsscott |
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Is this a resistor?
Started by Zoe Warren |
3 Replies
999 Views |
April 04, 2025, 09:25:58 am by Willabe |
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Lamington Reverb with Mods Layout
Started by dogburn |
4 Replies
2961 Views |
April 04, 2025, 09:02:12 am by dogburn |
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Slucky’s Tweed Deluxe Reverb
Started by Prento |
13 Replies
1694 Views |
April 04, 2025, 07:34:50 am by Tone Junkie |
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Questions about one-tube reverb circuit
Started by Diverted |
22 Replies
2232 Views |
April 03, 2025, 03:18:07 pm by Willabe |
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29 Replies
7020 Views |
April 02, 2025, 09:39:55 pm by marshallguy |
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Tone shaping a Chieftain build
Started by Duncan |
12 Replies
3444 Views |
April 02, 2025, 05:26:47 am by darkbluemurder |
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21 Replies
2251 Views |
April 01, 2025, 10:04:04 pm by Willabe |
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voltage divider assistance.
Started by joesatch |
6 Replies
979 Views |
April 01, 2025, 12:50:42 pm by joesatch |
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1960s JMI AC10 Twin - I'm stuck...
Started by Yeatzee |
15 Replies
1988 Views |
April 01, 2025, 11:41:07 am by Yeatzee |
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6 Replies
1099 Views |
April 01, 2025, 10:43:05 am by passaloutre |
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EF86 - what to do with them
Started by SoundCity85 |
15 Replies
6054 Views |
April 01, 2025, 09:42:21 am by hgittela |
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7C5 Idea
Started by dwinstonwood « 1 2 » |
72 Replies
13488 Views |
April 01, 2025, 09:28:44 am by dwinstonwood |
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What is my scope showing me?
Started by stevefmt |
16 Replies
2217 Views |
April 01, 2025, 05:56:51 am by pdf64 |
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10 Replies
1571 Views |
March 31, 2025, 01:18:45 pm by Woodrow F Call |
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11 Replies
1435 Views |
March 31, 2025, 11:46:19 am by Thisismyname |
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Popping noise on an Ampeg Gemini GV15
Started by Sansteeth |
9 Replies
1363 Views |
March 31, 2025, 11:34:30 am by Sansteeth |
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Hammond Mfg.
Started by pullshocks |
16 Replies
2479 Views |
March 30, 2025, 05:57:44 pm by AlNewman |
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