Welcome To the Hoffman Amplifiers Forum
March 10, 2026, 07:25:04 pm
Welcome To the Hoffman Amplifiers ForumMarch 10, 2026, 07:25:04 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| 0 Members and 33 Guests are viewing this board. | ||||
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cap to ground on mid pot?
Started by joesatch |
7 Replies
2184 Views |
April 25, 2025, 03:54:52 pmby Willabe |
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O-scope - When all else fails
Started by stratomaster |
7 Replies
2207 Views |
April 24, 2025, 01:38:01 pm by stratomaster |
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Single Channel 6G6
Started by sclinchy |
10 Replies
5809 Views |
April 24, 2025, 09:01:09 am by jonathan_kea |
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18watt Cascade preamp layout
Started by distortionhead |
25 Replies
4948 Views |
April 24, 2025, 04:54:54 am by distortionhead |
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Jet city custom 22
Started by Tone Junkie |
2 Replies
1807 Views |
April 23, 2025, 11:41:16 am by Tone Junkie |
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TAD KT66 with loose base
Started by RoadShow |
9 Replies
2234 Views |
April 22, 2025, 11:25:39 am by RoadShow |
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70 Replies
12311 Views |
April 21, 2025, 08:28:27 pm by tubeswell |
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12 Replies
8768 Views |
April 21, 2025, 03:39:27 pm by tremdoctor |
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48 Replies
13807 Views |
April 20, 2025, 11:28:59 am by Yeatzee |
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Bias current vs. voltage
Started by Lectroid |
8 Replies
2622 Views |
April 20, 2025, 09:56:26 am by Lectroid |
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15 Replies
3647 Views |
April 18, 2025, 12:24:21 pm by B-Rex |
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6 Replies
2455 Views |
April 17, 2025, 06:13:14 pm by BlackCrowe604 |
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hot rod deluxe dumble pcb
Started by Mattjaco1 |
5 Replies
2655 Views |
April 17, 2025, 11:18:45 am by Mattjaco1 |
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Bad reverb transformer? maybe the tank?
Started by KimboDb |
30 Replies
11453 Views |
April 16, 2025, 08:30:00 pm by tubeswell |
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Hammond 1140-LN-E Transformer
Started by exnihilfit |
5 Replies
2254 Views |
April 16, 2025, 12:25:10 pm by exnihilfit |
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4 Replies
2189 Views |
April 16, 2025, 07:54:00 am by Lectroid |
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24 Replies
5029 Views |
April 16, 2025, 04:47:27 am by Latole |
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Bias circuit assistance.
Started by joesatch |
4 Replies
1673 Views |
April 15, 2025, 12:03:04 pm by tubeswell |
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4 Replies
1973 Views |
April 15, 2025, 11:38:42 am by scstill |
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bias ground
Started by joesatch |
11 Replies
2939 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
2570 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
2150 Views |
April 14, 2025, 01:39:14 pm by B-Rex |
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RF noise filtering
Started by phsyconoodler |
15 Replies
12979 Views |
April 14, 2025, 09:53:04 am by scstill |
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20 Replies
4555 Views |
April 13, 2025, 11:05:28 pm by sec1rlr |
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PT Tap question
Started by joesatch |
1 Replies
1601 Views |
April 13, 2025, 08:46:37 pm by tubeswell |
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Hammond AO-44 conversion
Started by tubenit |
7 Replies
2463 Views |
April 13, 2025, 05:37:14 pm by tubenit |
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15 Replies
4212 Views |
April 13, 2025, 02:10:25 pm by wsscott |
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5E3 Kit - Bias Updated
Started by bbmade |
29 Replies
5208 Views |
April 13, 2025, 12:58:33 pm by bbmade |
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AC30C2 volume/gain pots do nothing.
Started by fossilshark |
6 Replies
2571 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
4216 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
2786 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
3232 Views |
April 11, 2025, 12:16:10 pm by Merlin |
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high octane push pull
Started by Beezerboy |
29 Replies
8334 Views |
April 11, 2025, 07:41:57 am by JPK |
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Tweed ODS 5879 Load Line
Started by stevefmt |
1 Replies
1661 Views |
April 10, 2025, 08:27:56 pm by tubenit |
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3 Replies
1926 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
7433 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
2186 Views |
April 08, 2025, 10:25:27 pm by joesatch |
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Repairs - Peavey Windsor Studio
Started by Shrek |
6 Replies
2403 Views |
April 08, 2025, 08:09:30 am by Shrek |
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Cathode resistor question
Started by Blooze |
8 Replies
2346 Views |
April 06, 2025, 11:59:08 pm by tubeswell |
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Project "scrap salvage"
Started by stw307 |
11 Replies
3578 Views |
April 06, 2025, 11:35:28 am by stw307 |
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3 Replies
3465 Views |
April 06, 2025, 08:26:56 am by filmdiary |
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1973 Twin Reverb Vibrato Issue
Started by plexi50 |
10 Replies
2719 Views |
April 05, 2025, 06:17:13 pm by plexi50 |
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Princeton Can Capacitor Question
Started by sec1rlr |
8 Replies
2268 Views |
April 05, 2025, 02:54:48 pm by sec1rlr |
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Relay switching grounding
Started by Jennings |
6 Replies
1823 Views |
April 05, 2025, 02:10:49 pm by Jennings |
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12 Replies
2586 Views |
April 05, 2025, 02:03:40 pm by HotBluePlates |
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19 Replies
4029 Views |
April 05, 2025, 09:55:47 am by HotBluePlates |
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Which Choke?
Started by passaloutre |
9 Replies
2048 Views |
April 05, 2025, 07:37:42 am by DummyLoad |
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136 Replies
17124 Views |
April 04, 2025, 10:19:20 am by wsscott |
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Is this a resistor?
Started by Zoe Warren |
3 Replies
1639 Views |
April 04, 2025, 09:25:58 am by Willabe |
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Lamington Reverb with Mods Layout
Started by dogburn |
4 Replies
4049 Views |
April 04, 2025, 09:02:12 am by dogburn |
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