Welcome To the Hoffman Amplifiers Forum
October 23, 2025, 09:18:39 am
Welcome To the Hoffman Amplifiers ForumOctober 23, 2025, 09:18:39 am | ||
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| passaloutre and 70 Guests are viewing this board. | ||||
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Dumble mods to AB763 circuits
Started by dunner84 |
5 Replies
17489 Views |
January 25, 2016, 07:58:28 amby Mike_J |
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11 Replies
3877 Views |
January 25, 2016, 12:52:55 am by kagliostro |
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Fender reverb in both channels methods
Started by p2pAmps |
27 Replies
12462 Views |
January 24, 2016, 08:22:33 pm by Mike_J |
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Presence / NFB matched to output jack
Started by jojokeo |
20 Replies
7387 Views |
January 24, 2016, 07:07:18 pm by jojokeo |
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10 Replies
3034 Views |
January 24, 2016, 05:14:39 pm by kagliostro |
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7 Replies
6102 Views |
January 24, 2016, 10:29:49 am by Paul1453 |
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1 Replies
2085 Views |
January 23, 2016, 04:45:03 pm by DummyLoad |
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question on biasing a Marshall JCM 800
Started by markmalin |
8 Replies
5229 Views |
January 23, 2016, 02:57:54 pm by mresistor |
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Oliver Sound G-300 Amp Head.....
Started by Jack_Hester |
40 Replies
10306 Views |
January 22, 2016, 05:18:15 pm by Jack_Hester |
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4 Replies
3708 Views |
January 22, 2016, 03:49:50 pm by PRR |
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2 Replies
2392 Views |
January 22, 2016, 03:43:39 pm by chocopower |
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13 Replies
4053 Views |
January 22, 2016, 08:59:38 am by hesamadman |
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A confusing power tube configuration
Started by kagliostro |
4 Replies
2135 Views |
January 21, 2016, 12:26:43 pm by kagliostro |
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Charred OT Primary at Tube Base
Started by fiftynine |
8 Replies
3093 Views |
January 21, 2016, 08:29:41 am by fiftynine |
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0 Replies
2133 Views |
January 20, 2016, 07:46:49 pm by silverfox |
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53 Replies
11756 Views |
January 20, 2016, 08:25:07 am by rosincore |
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18 watt Marshall type circuit.
Started by guitardude57 |
24 Replies
10785 Views |
January 19, 2016, 10:03:52 pm by drew |
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5 Replies
2576 Views |
January 19, 2016, 03:35:13 pm by MFowler |
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4 Replies
2960 Views |
January 19, 2016, 02:41:25 pm by Fresh_Start |
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16 Replies
9011 Views |
January 18, 2016, 05:24:39 pm by Paul1453 |
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1 channel AB763 chassis size
Started by dunner84 |
9 Replies
3128 Views |
January 18, 2016, 02:33:31 pm by DummyLoad |
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New 5f2a build oscillation Issue
Started by dunner84 |
36 Replies
7883 Views |
January 17, 2016, 01:10:11 pm by Paul1453 |
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Fender reverb unit
Started by Big chief |
6 Replies
2876 Views |
January 16, 2016, 06:32:12 pm by Mike_J |
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Sparks flying in power tubes...
Started by markmalin |
27 Replies
14325 Views |
January 16, 2016, 03:48:46 pm by markmalin |
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31 Replies
9342 Views |
January 16, 2016, 12:47:40 pm by silverfox |
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Salvaged Transformer Help
Started by ncusack |
7 Replies
4109 Views |
January 15, 2016, 08:00:18 am by eleventeen |
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746 Replies
220086 Views |
January 14, 2016, 03:49:18 pm by sluckey |
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18 Replies
14939 Views |
January 14, 2016, 01:20:42 pm by jane_t steele |
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Matchless Spitfire Build Troubleshooting
Started by silendt |
31 Replies
13485 Views |
January 14, 2016, 12:31:26 am by MFowler |
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4 gain stage comparison
Started by tubenit |
12 Replies
4875 Views |
January 13, 2016, 11:39:31 pm by PRR |
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4 Replies
2373 Views |
January 13, 2016, 11:22:50 pm by bbbbass |
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princeton reverb AA1164 new build
Started by khansen810 |
3 Replies
2353 Views |
January 12, 2016, 06:35:05 pm by EL34 |
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Speaker jack mod
Started by Jerzey2222 |
16 Replies
3688 Views |
January 12, 2016, 01:25:05 pm by MFowler |
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Some pointers on my breadboard?
Started by hesamadman |
5 Replies
2416 Views |
January 11, 2016, 08:38:44 pm by Paul1453 |
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Input jacks Fender style
Started by uki |
10 Replies
7209 Views |
January 10, 2016, 10:34:29 pm by uki |
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Bogen MX30A tweaker amp
Started by glassesnvests |
19 Replies
7702 Views |
January 10, 2016, 01:44:05 pm by PRR |
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Fixed bias help
Started by goldstache |
6 Replies
2242 Views |
January 10, 2016, 09:47:04 am by goldstache |
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OP Amp EQ circuit for Tube Amp
Started by silverfox |
12 Replies
5097 Views |
January 09, 2016, 02:39:18 pm by silverfox |
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Whistling causes
Started by Paul1453 |
22 Replies
6217 Views |
January 09, 2016, 10:48:06 am by Paul1453 |
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One Tube 6GW8 Reverb
Started by TIMBO |
2 Replies
4799 Views |
January 09, 2016, 06:46:36 am by tubenit |
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Excessive heat and venting
Started by hesamadman |
18 Replies
5146 Views |
January 08, 2016, 09:06:39 pm by PRR |
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2 Replies
1942 Views |
January 07, 2016, 01:14:07 pm by Skip Hagey |
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KT66 Push Pull Output Transformer
Started by Ed_Chambley |
21 Replies
15272 Views |
January 07, 2016, 12:58:34 pm by Paul1453 |
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13 Replies
4560 Views |
January 07, 2016, 06:03:09 am by EL34 |
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2 Replies
2439 Views |
January 06, 2016, 06:08:33 pm by PRR |
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PT ?
Started by okguitarman |
2 Replies
1704 Views |
January 04, 2016, 10:22:02 pm by okguitarman |
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Troublesome silverface Champ
Started by alange5 |
12 Replies
5523 Views |
January 04, 2016, 10:00:12 pm by PRR |
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15 Replies
15070 Views |
January 04, 2016, 03:17:42 pm by shooter |
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iron from an ECLL800 amp
Started by birt |
16 Replies
11435 Views |
January 03, 2016, 04:19:37 pm by kagliostro |
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Is this dangerous?
Started by TerryD |
3 Replies
2392 Views |
January 03, 2016, 03:35:17 pm by TerryD |
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