Welcome To the Hoffman Amplifiers Forum
August 29, 2026, 11:25:45 am
Welcome To the Hoffman Amplifiers ForumAugust 29, 2026, 11:25:45 am | ||
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2 Replies
6167 Views |
May 18, 2013, 01:40:37 pmby kagliostro |
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Univox 1221 Rebuild-Mod
Started by silverfox |
26 Replies
13933 Views |
May 18, 2013, 12:23:30 pm by silverfox |
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Another nice "barn find"
Started by eleventeen |
5 Replies
4636 Views |
May 18, 2013, 07:05:51 am by sluckey |
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5 Replies
5623 Views |
May 17, 2013, 03:47:01 pm by Tone Junkie |
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13 Replies
7109 Views |
May 17, 2013, 05:00:33 am by kagliostro |
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Ampeg SJ12R schematic
Started by phsyconoodler |
15 Replies
8758 Views |
May 16, 2013, 10:17:20 pm by phsyconoodler |
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24 Replies
11894 Views |
May 14, 2013, 05:44:36 pm by jjasilli |
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tracking down a short
Started by Bugman3183 |
19 Replies
12757 Views |
May 14, 2013, 03:33:54 pm by Ed_Chambley |
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How does this look for a bias supply?
Started by SILVERGUN |
13 Replies
13696 Views |
May 14, 2013, 02:48:15 pm by kagliostro |
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Mesa Mark V Repair
Started by Finkilium |
5 Replies
6633 Views |
May 14, 2013, 02:09:53 am by Jack1962 |
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3 Replies
5319 Views |
May 13, 2013, 12:12:55 am by HotBluePlates |
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Power Amp- Current Build
Started by silverfox |
12 Replies
9452 Views |
May 12, 2013, 12:20:57 am by silverfox |
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Bias- Voltage or Current?
Started by silverfox |
15 Replies
14830 Views |
May 11, 2013, 11:43:18 pm by silverfox |
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Impedance part 1
Started by spacelabstudio |
20 Replies
9567 Views |
May 11, 2013, 08:00:09 am by burt_toast |
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1-Tube Reverb addon
Started by Ray48 |
21 Replies
8530 Views |
May 10, 2013, 10:55:30 pm by PRR |
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LARMAR grounding question?
Started by ncusack |
3 Replies
3986 Views |
May 10, 2013, 12:07:01 pm by sluckey |
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PT Identification
Started by Ed_Chambley |
37 Replies
16393 Views |
May 10, 2013, 11:51:52 am by DummyLoad |
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12 Replies
6512 Views |
May 09, 2013, 10:36:01 pm by Madison |
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Matchless DC30 channel 2
Started by Leevi |
18 Replies
14029 Views |
May 09, 2013, 02:00:11 am by Leevi |
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Power Transformer Ordering Questions
Started by silverfox |
13 Replies
7405 Views |
May 08, 2013, 11:11:22 pm by silverfox |
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6AF11 Push Pull Amp
Started by hayruss |
45 Replies
24881 Views |
May 08, 2013, 05:18:46 pm by John |
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10 Replies
7892 Views |
May 08, 2013, 07:41:57 am by kagliostro |
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SF Twin Reverb with buzzy reverb
Started by BigE |
5 Replies
4468 Views |
May 07, 2013, 07:13:57 pm by eleventeen |
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plexi clone issues
Started by phsyconoodler |
14 Replies
7718 Views |
May 07, 2013, 01:55:47 pm by plexi50 |
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Silvertone 1484 reverb mod question
Started by chrisq |
4 Replies
5597 Views |
May 07, 2013, 08:07:08 am by plexi50 |
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The importance of sag?
Started by SILVERGUN |
41 Replies
28326 Views |
May 07, 2013, 07:19:14 am by HotBluePlates |
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'73 Traynor YBA-1
Started by burt_toast |
4 Replies
5243 Views |
May 05, 2013, 07:04:36 am by Willabe |
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Valco 510-11 issues
Started by haliles |
14 Replies
8887 Views |
May 05, 2013, 07:02:12 am by Willabe |
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Separate preamp power supply
Started by dscottguitars |
14 Replies
7345 Views |
May 04, 2013, 09:50:23 pm by HotBluePlates |
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MAKING PROGRESS ON A FRUSTRATING BUILD
Started by TIMBO |
26 Replies
10970 Views |
May 04, 2013, 05:09:24 am by tubenit |
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6 Replies
5876 Views |
May 04, 2013, 12:53:42 am by kagliostro |
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Voltage level question
Started by VMS |
14 Replies
11501 Views |
May 03, 2013, 08:46:17 am by HotBluePlates |
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5U4GT Rectifier voltages
Started by simonallaway |
8 Replies
7512 Views |
May 02, 2013, 12:17:15 pm by simonallaway |
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Scary SF 73 Twin in for service
Started by Madison |
33 Replies
14445 Views |
May 02, 2013, 12:01:50 am by Madison |
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Hook-Up wire
Started by J Rindt |
6 Replies
6219 Views |
May 01, 2013, 10:23:58 pm by HotBluePlates |
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mystery transformer set
Started by g-man |
15 Replies
8850 Views |
May 01, 2013, 05:28:34 pm by Willabe |
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22 Replies
13031 Views |
May 01, 2013, 12:17:44 pm by thelonious |
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Identifying leaking caps
Started by SleepLess |
8 Replies
5945 Views |
May 01, 2013, 05:32:20 am by stratele52 |
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Adding preamp stage.
Started by slash1986 |
12 Replies
11427 Views |
April 30, 2013, 09:41:03 am by SILVERGUN |
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6 Replies
5315 Views |
April 29, 2013, 07:18:40 pm by plexi50 |
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6G15 Reverb + vib - single extra 12AX7?
Started by Papernut |
18 Replies
8274 Views |
April 29, 2013, 12:52:41 pm by Papernut |
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/13 bias
Started by Blind Lemon |
17 Replies
17906 Views |
April 28, 2013, 03:57:14 pm by kagliostro |
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Help with Soundtech PA Board please
Started by dwp |
1 Replies
4634 Views |
April 28, 2013, 03:43:18 pm by HotBluePlates |
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bias question
Started by scrimpus |
2 Replies
3976 Views |
April 28, 2013, 03:38:30 pm by HotBluePlates |
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1 Replies
3861 Views |
April 28, 2013, 03:33:23 pm by sluckey |
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Did I loose vacuum ?
Started by Bub |
16 Replies
8805 Views |
April 28, 2013, 01:36:34 pm by tubeswell |
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Chassis heat and fans - your thoughts
Started by alerich |
6 Replies
6216 Views |
April 27, 2013, 05:36:35 pm by Quatro |
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Jack for extra speaker
Started by John |
2 Replies
4317 Views |
April 27, 2013, 12:54:43 pm by John |
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running 6V6 in a EL34 designed amp
Started by 12AX7 |
4 Replies
4427 Views |
April 27, 2013, 09:21:22 am by HotBluePlates |
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Out Tranny I.D.
Started by J Rindt |
16 Replies
9507 Views |
April 26, 2013, 09:30:09 pm by kagliostro |
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