Welcome To the Hoffman Amplifiers Forum
July 14, 2026, 02:18:11 pm
Welcome To the Hoffman Amplifiers ForumJuly 14, 2026, 02:18:11 pm | ||
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| tomojt and 135 Guests are viewing this board. | ||||
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What a dreadfull hum - Hoffman AB763
Started by riftamps |
14 Replies
6738 Views |
June 07, 2014, 11:29:42 pmby HotBluePlates |
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4 Replies
4358 Views |
June 06, 2014, 04:07:38 pm by dude |
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7 Replies
5242 Views |
June 05, 2014, 09:59:43 pm by PRR |
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Sag Resistor
Started by dude |
3 Replies
5102 Views |
June 05, 2014, 03:47:31 pm by Jack1962 |
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4 Replies
6659 Views |
June 05, 2014, 03:38:17 pm by Jack1962 |
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7 Replies
8710 Views |
June 05, 2014, 03:17:56 am by kagliostro |
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4 Replies
4175 Views |
June 04, 2014, 09:28:29 pm by printer2 |
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FARGEN amp schems needed
Started by Colas LeGrippa |
9 Replies
7724 Views |
June 04, 2014, 08:46:58 pm by Colas LeGrippa |
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175 Replies
80202 Views |
June 04, 2014, 03:29:28 pm by super&plexi |
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8 Replies
6736 Views |
June 04, 2014, 02:34:29 pm by kwm488 |
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Can't get sound out of my ODS-100-HRM
Started by Mike_J |
20 Replies
8640 Views |
June 03, 2014, 06:38:05 pm by Mike_J |
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All signs point to open PT primary (??!!!)
Started by BrianS |
20 Replies
8659 Views |
June 03, 2014, 11:21:46 am by BrianS |
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Adding a balanced line out to a tube amp
Started by Baguette |
13 Replies
14404 Views |
June 03, 2014, 07:22:06 am by labb |
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Advice on placement of wires
Started by dude |
19 Replies
9001 Views |
June 02, 2014, 03:17:52 pm by eleventeen |
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SE draws max current at idle???
Started by jeff |
10 Replies
7257 Views |
June 01, 2014, 11:56:04 pm by PRR |
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AA764 champ proper grounding scheme.
Started by goldstache |
26 Replies
11254 Views |
May 31, 2014, 06:53:05 am by goldstache |
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Issue to lower voltages on my new build
Started by MZANNETOS |
1 Replies
3883 Views |
May 30, 2014, 06:39:45 pm by HotBluePlates |
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Hammond 273BX PT question
Started by navdave |
12 Replies
6551 Views |
May 30, 2014, 05:34:42 pm by ernie_jr |
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Sunn Solarus solid state power supply
Started by navdave |
14 Replies
8688 Views |
May 30, 2014, 03:41:17 pm by navdave |
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25 Replies
15149 Views |
May 30, 2014, 10:41:17 am by MZANNETOS |
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power supply filtering question
Started by thermion |
3 Replies
5363 Views |
May 29, 2014, 12:09:39 pm by HotBluePlates |
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Good Morning Gut Shots
Started by TeslaRect5150 |
0 Replies
3431 Views |
May 29, 2014, 09:02:48 am by TeslaRect5150 |
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testing bias/lightbulb limiter
Started by jeff |
2 Replies
3633 Views |
May 29, 2014, 03:32:30 am by stratele52 |
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one two testing REDPLATE pics
Started by Colas LeGrippa |
2 Replies
4318 Views |
May 28, 2014, 05:51:42 pm by Colas LeGrippa |
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LOUD hum, with master volume turned up
Started by Gainzilla |
21 Replies
17047 Views |
May 28, 2014, 03:44:10 pm by HotBluePlates |
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High headroom and overdrive in the same amp
Started by Leevi |
9 Replies
6025 Views |
May 28, 2014, 01:10:27 pm by Ritchie200 |
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low watt harp amp
Started by John |
6 Replies
5913 Views |
May 28, 2014, 12:51:45 pm by John |
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Preamp tube shields
Started by markvalluzzi |
2 Replies
3569 Views |
May 28, 2014, 06:47:58 am by EL34 |
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7 Replies
5185 Views |
May 27, 2014, 06:09:34 pm by Willabe |
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arcing between plate and heater
Started by Colas LeGrippa |
4 Replies
4866 Views |
May 27, 2014, 05:40:35 pm by Colas LeGrippa |
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Reverb Tanks
Started by TIMBO |
4 Replies
4175 Views |
May 26, 2014, 09:43:24 am by terminalgs |
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What do you think of this idea
Started by TIMBO |
13 Replies
6936 Views |
May 23, 2014, 08:29:02 pm by John |
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Can a 4-Lug Marshall Jack be Fixed?
Started by jjasilli |
3 Replies
3683 Views |
May 23, 2014, 09:21:50 am by jjasilli |
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8 Replies
5205 Views |
May 23, 2014, 08:06:30 am by Jack1962 |
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Vox Reverb Unit question
Started by kagliostro |
4 Replies
3583 Views |
May 22, 2014, 09:41:45 am by kagliostro |
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200 volt B+ drop!?
Started by navdave |
29 Replies
12595 Views |
May 22, 2014, 02:53:02 am by stratele52 |
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skylark GA5T question
Started by shooter |
2 Replies
3464 Views |
May 21, 2014, 04:18:05 pm by shooter |
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13 Replies
8088 Views |
May 21, 2014, 02:39:06 pm by Gainzilla |
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Power Transformer
Started by TIMBO |
15 Replies
6101 Views |
May 21, 2014, 11:11:50 am by tubeswell |
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77 Replies
25114 Views |
May 20, 2014, 07:53:21 pm by EL34 |
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More on heaters
Started by Ed_Chambley |
47 Replies
20121 Views |
May 20, 2014, 02:26:35 pm by Willabe |
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11 Replies
10660 Views |
May 20, 2014, 06:54:52 am by Jack1962 |
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2 heads on stage
Started by Madison |
9 Replies
6325 Views |
May 19, 2014, 07:09:36 pm by Madison |
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Raised heater CT voltage?
Started by Voxbox |
6 Replies
4625 Views |
May 19, 2014, 05:05:58 pm by Voxbox |
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Have to build or go nuts
Started by stevehoover |
3 Replies
3702 Views |
May 18, 2014, 11:01:36 pm by stevehoover |
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D13 SJT 10/20 Biasing
Started by NotSure |
1 Replies
3623 Views |
May 18, 2014, 09:04:06 pm by HotBluePlates |
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Not sure if voltages are correct ?
Started by dude |
4 Replies
4288 Views |
May 18, 2014, 08:07:13 pm by dude |
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Old Mallory Caps
Started by TerryD |
18 Replies
9862 Views |
May 18, 2014, 03:00:50 pm by EL34 |
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4 Replies
5879 Views |
May 18, 2014, 01:59:53 pm by kagliostro |
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Some jargon definition please
Started by Ross |
5 Replies
3964 Views |
May 18, 2014, 01:19:58 pm by TIMBO |
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