Welcome To the Hoffman Amplifiers Forum
April 14, 2026, 09:46:51 pm
Welcome To the Hoffman Amplifiers ForumApril 14, 2026, 09:46:51 pm | ||
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converting 4-EL84 to KT66.
Started by dwp |
5 Replies
7348 Views |
May 14, 2010, 08:30:59 amby dwp |
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3 Replies
5792 Views |
May 14, 2010, 04:59:09 am by FYL |
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Headphones from speaker jack?
Started by dynaman1 |
5 Replies
5575 Views |
May 13, 2010, 03:43:46 pm by dynaman1 |
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Sovtek Mig 60
Started by plexi50 |
14 Replies
10932 Views |
May 13, 2010, 02:04:43 am by The_Gaz |
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7 Replies
7680 Views |
May 12, 2010, 10:31:25 pm by jjasilli |
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Fender Concert Blackface plate voltage
Started by chocopower |
3 Replies
5516 Views |
May 12, 2010, 04:10:57 pm by JayB |
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'69 Marshall Head 6550 to EL34
Started by NannerPuddin |
1 Replies
4003 Views |
May 12, 2010, 04:08:32 pm by jojokeo |
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voltage tolerance
Started by bnew63 |
17 Replies
8893 Views |
May 11, 2010, 06:02:11 pm by RicharD |
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3 Replies
4762 Views |
May 11, 2010, 03:22:48 pm by archaos |
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22 Replies
15403 Views |
May 11, 2010, 12:28:25 pm by simonallaway |
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6 Replies
7037 Views |
May 10, 2010, 11:07:15 pm by Ritchie200 |
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Totem Pole
Started by duke of earl |
16 Replies
9954 Views |
May 10, 2010, 09:14:05 pm by duke of earl |
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6 Replies
10729 Views |
May 10, 2010, 11:49:50 am by Jack1962 |
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15 Replies
9548 Views |
May 09, 2010, 11:55:57 pm by TubeGeek |
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6550 bias in ultraliniear connection
Started by Bub |
11 Replies
11807 Views |
May 09, 2010, 08:51:58 pm by Bub |
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to drop voltage or not?
Started by bnew63 |
8 Replies
5993 Views |
May 09, 2010, 03:52:34 pm by bnew63 |
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19 Replies
12289 Views |
May 09, 2010, 12:14:36 pm by imaradiostar |
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6 Replies
6952 Views |
May 09, 2010, 12:01:32 pm by bigdaddy |
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Reverb driver
Started by Leevi |
18 Replies
10997 Views |
May 09, 2010, 11:58:58 am by imaradiostar |
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The "Opus" Amp??
Started by TIMBO |
18 Replies
9265 Views |
May 08, 2010, 05:47:31 pm by TIMBO |
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Looking for a good tube mic preamp schematic
Started by kagliostro « 1 2 » |
76 Replies
48932 Views |
May 08, 2010, 04:35:18 pm by kagliostro |
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18 Replies
16922 Views |
May 08, 2010, 01:35:55 pm by Fresh_Start |
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Grounding- AB763 AB165 AA864 etc.
Started by J Rindt |
5 Replies
8977 Views |
May 08, 2010, 01:23:50 pm by Fresh_Start |
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12ax7 Phase inverter voltages
Started by Bub |
3 Replies
11879 Views |
May 08, 2010, 10:41:07 am by Bub |
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Where to get a roach?
Started by tubesornothing |
3 Replies
4776 Views |
May 08, 2010, 01:05:48 am by Shrapnel |
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PP OPT in a SE Amp
Started by Trevor_Long |
7 Replies
6251 Views |
May 07, 2010, 08:12:16 pm by bigdaddy |
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6G6-A Bassman
Started by J Rindt |
7 Replies
6930 Views |
May 06, 2010, 03:16:49 pm by Shrapnel |
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Pro Reverb cap job
Started by gbeard |
2 Replies
4540 Views |
May 06, 2010, 07:50:29 am by alerich |
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22 Replies
12321 Views |
May 05, 2010, 10:32:44 pm by SoundmasterG |
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high low jack question ?
Started by john_t |
2 Replies
4231 Views |
May 05, 2010, 06:57:25 pm by john_t |
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Destructive mistakes
Started by atmars |
31 Replies
14017 Views |
May 05, 2010, 03:09:27 pm by jojokeo |
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high end parts
Started by bnew63 |
26 Replies
11162 Views |
May 05, 2010, 07:24:52 am by bigdaddy |
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Dating a DSL JCM 2000
Started by Backwoods Joe |
12 Replies
7525 Views |
May 04, 2010, 06:06:47 pm by Backwoods Joe |
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2 Replies
4968 Views |
May 04, 2010, 04:56:10 pm by phsyconoodler |
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disturbance when turning the pot
Started by Leevi |
15 Replies
9188 Views |
May 04, 2010, 02:44:31 pm by tubeswell |
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Cap in Stout amp
Started by Mats |
4 Replies
4535 Views |
May 04, 2010, 01:14:06 pm by Mats |
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don't know opt's output
Started by bnew63 |
46 Replies
17657 Views |
May 04, 2010, 01:19:15 am by Shrapnel |
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single speaker out of phase??!??
Started by tubesornothing |
13 Replies
10330 Views |
May 03, 2010, 10:14:04 pm by P Batty |
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Critique this schematic...please.
Started by bigsbybender |
8 Replies
6426 Views |
May 03, 2010, 01:47:15 pm by terminalgs |
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what would happen ga 20
Started by john_t |
8 Replies
6539 Views |
May 03, 2010, 11:46:09 am by panhead |
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106 Replies
45056 Views |
May 03, 2010, 10:47:37 am by bigdaddy |
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11 Replies
8272 Views |
May 02, 2010, 02:50:39 pm by Structo |
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Tremolux 6G9 adjustable bias
Started by skyclad |
1 Replies
4554 Views |
May 02, 2010, 02:43:40 pm by tubeswell |
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23 Replies
15715 Views |
May 02, 2010, 02:19:39 am by HotBluePlates |
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uk transformers
Started by cigarboxblues |
28 Replies
12072 Views |
May 01, 2010, 10:09:38 pm by PRR |
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VHT Special 6 - What a bargain!
Started by chocopower |
25 Replies
15510 Views |
May 01, 2010, 05:44:29 pm by tubesornothing |
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tubes with 117 volt heaters
Started by Jack1962 |
8 Replies
7760 Views |
May 01, 2010, 10:55:09 am by Tiny_Daddy |
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Horizontal EL84?
Started by Ritchie200 |
11 Replies
8550 Views |
May 01, 2010, 03:16:51 am by FYL |
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Low End Cutting Out
Started by xkaynex |
4 Replies
5020 Views |
April 30, 2010, 04:44:46 pm by tubesornothing |
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18 Replies
11032 Views |
April 29, 2010, 01:43:26 pm by simonallaway |
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