Welcome To the Hoffman Amplifiers Forum
October 22, 2025, 05:45:14 pm
Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 05:45:14 pm | ||
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Faraday cage on chassis open ends?
Started by PharmRock |
7 Replies
2623 Views |
January 28, 2022, 07:53:54 amby PharmRock |
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EF86 vibroverb
Started by valvetones |
13 Replies
3224 Views |
January 27, 2022, 10:42:08 pm by valvetones |
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13 Replies
3175 Views |
January 27, 2022, 09:49:06 am by Willabe |
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4 Replies
3394 Views |
January 27, 2022, 01:05:37 am by Grees01 |
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JTM45 Schematic and Layout
Started by PharmRock |
15 Replies
9963 Views |
January 26, 2022, 10:02:27 pm by Grees01 |
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Ultra Linear hypothetical question
Started by Jonas |
3 Replies
1905 Views |
January 26, 2022, 03:15:41 am by pdf64 |
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37 Replies
8298 Views |
January 25, 2022, 08:00:38 pm by bmccowan |
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MOD Epiphone Valve Jr Help!!
Started by Travis8 |
5 Replies
2317 Views |
January 25, 2022, 09:43:34 am by PharmRock |
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Magnatone Varsity capacitor confusion
Started by mellotron |
6 Replies
2520 Views |
January 24, 2022, 10:10:29 pm by mellotron |
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SE circuit
Started by Stuff4bikes |
17 Replies
3796 Views |
January 24, 2022, 09:49:09 pm by Stuff4bikes |
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14 Replies
2972 Views |
January 24, 2022, 11:59:38 am by PharmRock |
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Phase Question
Started by Grees01 |
10 Replies
2710 Views |
January 24, 2022, 01:02:45 am by Grees01 |
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6G16 vibroverb layout discrepancy
Started by valvetones |
6 Replies
2350 Views |
January 23, 2022, 01:24:17 pm by valvetones |
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Unusual Pentode preamp.
Started by Cliff Rogers |
1 Replies
1932 Views |
January 23, 2022, 08:11:58 am by uki |
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Hot Rod DeVille rebuild
Started by bigOandrew |
19 Replies
5306 Views |
January 22, 2022, 07:57:16 pm by glass54 |
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Dual SE & PP Amp - Help with power supply
Started by _Steve |
12 Replies
3434 Views |
January 22, 2022, 11:33:27 am by kagliostro |
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Horrible hum cased by?
Started by timmyjoe |
21 Replies
5079 Views |
January 21, 2022, 04:56:16 pm by acheld |
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Component selection - PRRI rebuild
Started by mellotron |
4 Replies
1934 Views |
January 20, 2022, 08:39:22 pm by PRR |
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Master volume on Matchless Clubman
Started by frankenxtein |
10 Replies
2593 Views |
January 20, 2022, 06:23:51 pm by frankenxtein |
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Hand Wired vs Printed Circuit Board.
Started by Grees01 |
27 Replies
5810 Views |
January 20, 2022, 07:55:15 am by kagliostro |
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Bugera V22 h
Started by HighFlyingV |
7 Replies
3725 Views |
January 20, 2022, 07:22:14 am by HighFlyingV |
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p2pAmps Rusty-Dawg #001 Demo
Started by p2pAmps |
6 Replies
2694 Views |
January 20, 2022, 12:41:27 am by Grees01 |
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Mystery Transformers
Started by Blueboozer |
6 Replies
2272 Views |
January 19, 2022, 09:16:22 pm by Blueboozer |
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5 Replies
2816 Views |
January 19, 2022, 03:53:31 am by Latole |
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Output transformer question
Started by Stuff4bikes |
1 Replies
1732 Views |
January 19, 2022, 03:38:07 am by glass54 |
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Champ 5F1 with 7591
Started by mikhett |
9 Replies
2739 Views |
January 18, 2022, 10:57:21 pm by mikhett |
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5 Replies
2191 Views |
January 18, 2022, 05:32:16 pm by turbofeedus |
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8 Replies
3346 Views |
January 18, 2022, 01:03:29 pm by joesatch |
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help spec'n PT?
Started by Jonas |
18 Replies
4204 Views |
January 18, 2022, 05:14:10 am by shooter |
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Reverb Problem
Started by Travis8 |
10 Replies
3086 Views |
January 17, 2022, 08:38:30 pm by PRR |
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12.6 volt winding reduced to 6.3
Started by valvetones |
25 Replies
6756 Views |
January 17, 2022, 08:21:07 pm by valvetones |
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Strange Voltage Readings On Prototype Board
Started by AHeck |
2 Replies
1995 Views |
January 17, 2022, 08:04:32 pm by AHeck |
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Where to begin?
Started by Will.darden |
2 Replies
1691 Views |
January 17, 2022, 07:28:10 pm by Grees01 |
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11 Replies
3532 Views |
January 17, 2022, 06:04:41 pm by pdf64 |
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4 Replies
2243 Views |
January 17, 2022, 03:13:59 pm by Bieworm |
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2204 V1 static when i touch the tube
Started by joesatch |
5 Replies
2234 Views |
January 17, 2022, 04:08:23 am by shooter |
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3 Replies
2117 Views |
January 16, 2022, 04:31:03 pm by HotBluePlates |
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Resistor type question
Started by joesatch |
4 Replies
1861 Views |
January 16, 2022, 12:59:39 pm by mresistor |
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Reverb pot in a drip edge PR
Started by mrhudson27 |
2 Replies
1731 Views |
January 16, 2022, 10:16:15 am by HotBluePlates |
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Some experienced eyes on this?
Started by jewishjay |
5 Replies
2025 Views |
January 15, 2022, 08:47:31 pm by ghostinthescope |
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Princeton 5881 trem-o-nator questions
Started by acheld |
2 Replies
1762 Views |
January 14, 2022, 08:00:36 am by ac427v |
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6 Replies
2713 Views |
January 14, 2022, 12:27:00 am by PRR |
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HT rectification
Started by ok_state_blues |
6 Replies
2095 Views |
January 13, 2022, 02:23:07 pm by ok_state_blues |
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3 Replies
2015 Views |
January 13, 2022, 10:07:58 am by JFlo |
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High gain two channel EL84 guitar amp
Started by Banjan73 |
35 Replies
7527 Views |
January 13, 2022, 07:54:14 am by Banjan73 |
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AC15/30 build Help
Started by AndyCharles |
28 Replies
5441 Views |
January 12, 2022, 07:30:08 pm by HotBluePlates |
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AC15 Power Transformer
Started by Glenn |
12 Replies
4219 Views |
January 12, 2022, 04:38:54 pm by mresistor |
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Transformer Repair
Started by Mason |
13 Replies
3433 Views |
January 12, 2022, 03:06:23 pm by Latole |
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Cabinet Finishes
Started by p2pAmps |
7 Replies
2846 Views |
January 12, 2022, 03:58:07 am by Latole |
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TLA turret layout with Vus (unfinished)
Started by Jatchley |
10 Replies
3028 Views |
January 11, 2022, 09:10:05 am by Jatchley |
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