Welcome To the Hoffman Amplifiers Forum
April 28, 2026, 02:13:21 am
Welcome To the Hoffman Amplifiers ForumApril 28, 2026, 02:13:21 am | ||
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1 Replies
4589 Views |
September 15, 2010, 03:31:22 amby FYL |
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sneak this in...need voltage doubler or way to increase bias ac voltage
Started by ampcabinets |
7 Replies
9286 Views |
September 14, 2010, 11:57:23 pm by PRR |
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Hum In Amp
Started by plexi50 |
6 Replies
5408 Views |
September 14, 2010, 11:45:22 pm by PRR |
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8 Replies
6764 Views |
September 14, 2010, 09:02:20 am by kagliostro |
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ab763 reverb squeal and more
Started by nateflanigan « 1 2 » |
63 Replies
29679 Views |
September 14, 2010, 07:31:49 am by nateflanigan |
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0 Replies
4384 Views |
September 13, 2010, 12:58:45 pm by frank57 |
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12AX7 heaters in series at 13.4V AC
Started by fluzo18 |
6 Replies
6352 Views |
September 13, 2010, 11:11:42 am by stingray_65 |
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parallel - cascade switching?
Started by tubenit |
3 Replies
5105 Views |
September 13, 2010, 03:01:23 am by tubeswell |
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Reducing gain
Started by firemedic |
4 Replies
4515 Views |
September 13, 2010, 02:54:44 am by kagliostro |
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8 Replies
8436 Views |
September 13, 2010, 02:05:24 am by kagliostro |
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Tube and Voltage change on the TOS amp
Started by 67polara |
7 Replies
6165 Views |
September 12, 2010, 11:40:54 pm by 67polara |
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Tung Sol KT66 and pre-PI cap?
Started by firemedic |
11 Replies
9423 Views |
September 12, 2010, 10:53:51 pm by firemedic |
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Problem with excessive current draw
Started by Joe1968 |
7 Replies
9324 Views |
September 12, 2010, 08:57:19 pm by PRR |
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Howl and Squeal on fire up
Started by stingray_65 |
4 Replies
5625 Views |
September 12, 2010, 01:50:44 pm by eleventeen |
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Question re "old" 6L6G's
Started by Coastie99 |
7 Replies
6451 Views |
September 12, 2010, 05:46:25 am by FYL |
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7 Replies
5982 Views |
September 12, 2010, 03:15:03 am by The_Gaz |
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5 Replies
5382 Views |
September 11, 2010, 02:21:12 pm by loogie |
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Magnatone M10 OT Question
Started by plexi50 |
3 Replies
4498 Views |
September 11, 2010, 11:30:06 am by sluckey |
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output transformers
Started by billcreller |
8 Replies
7640 Views |
September 11, 2010, 08:01:44 am by bluesbear |
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5B2 question
Started by Madison |
4 Replies
4473 Views |
September 11, 2010, 01:19:12 am by Madison |
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6 Replies
7417 Views |
September 10, 2010, 08:54:25 pm by eleventeen |
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nothing here
Started by ampcabinets |
20 Replies
12283 Views |
September 10, 2010, 03:56:13 pm by DummyLoad |
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4 Replies
6070 Views |
September 10, 2010, 02:58:00 pm by Baguette |
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MOVED: Measuring relay voltage
Started by EL34 |
0 Replies
3819 Views |
September 10, 2010, 02:45:39 pm by EL34 |
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Can I jumper the bias range resistor?
Started by Baguette |
4 Replies
5357 Views |
September 10, 2010, 02:25:49 pm by Baguette |
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Conversion request
Started by rzenc |
23 Replies
11486 Views |
September 10, 2010, 08:48:12 am by rzenc |
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9 Replies
6525 Views |
September 10, 2010, 02:37:21 am by Baguette |
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Reverb Buzz in AB763
Started by John_D |
2 Replies
5318 Views |
September 09, 2010, 07:01:42 pm by John_D |
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65 amps tupelo...
Started by bruno |
3 Replies
5149 Views |
September 09, 2010, 03:29:47 pm by bruno |
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PT Question
Started by TIMBO |
5 Replies
6405 Views |
September 09, 2010, 02:16:00 pm by TIMBO |
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High V1 Cathode Voltages*
Started by plexi50 |
8 Replies
7659 Views |
September 09, 2010, 01:44:21 pm by plexi50 |
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1-tube reverb problem
Started by firemedic |
10 Replies
7592 Views |
September 08, 2010, 06:06:07 pm by tubenit |
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pre-champ style amps
Started by Madison |
5 Replies
5921 Views |
September 08, 2010, 05:28:22 pm by loogie |
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Filter cap resistors
Started by macula56 |
7 Replies
7433 Views |
September 08, 2010, 07:20:17 am by macula56 |
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23 Replies
10820 Views |
September 07, 2010, 11:49:40 pm by jojokeo |
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4 Replies
5894 Views |
September 07, 2010, 10:35:22 pm by Ryteone |
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16 Replies
13107 Views |
September 07, 2010, 06:10:24 pm by jhadhar65 |
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My lucky day... SCORE!
Started by stingray_65 |
5 Replies
5161 Views |
September 07, 2010, 10:07:44 am by supro66 |
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Noisy tone when playing with big volume
Started by Leevi |
4 Replies
4639 Views |
September 07, 2010, 01:28:50 am by StevieRayVehkakoski |
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What If Filaments?
Started by plexi50 |
26 Replies
12060 Views |
September 07, 2010, 12:24:51 am by eleventeen |
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2 Replies
3828 Views |
September 06, 2010, 08:20:26 pm by nateflanigan |
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Piranha 6W Project
Started by zendragon63 |
2 Replies
4548 Views |
September 06, 2010, 06:26:47 pm by tubeswell |
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SVP-PRO blowing fuse
Started by toomanyslurpees |
20 Replies
9206 Views |
September 06, 2010, 03:10:48 pm by toomanyslurpees |
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AC30 build driving me crazy
Started by rcrmck |
5 Replies
6016 Views |
September 06, 2010, 02:35:59 pm by plexi50 |
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12 Replies
7010 Views |
September 05, 2010, 06:31:29 am by 6G6 |
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Seymour Duncan PITA
Started by plexi50 |
4 Replies
4514 Views |
September 04, 2010, 01:10:49 pm by plexi50 |
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Standby on PT center tap
Started by panhead |
5 Replies
6665 Views |
September 04, 2010, 09:23:34 am by stingray_65 |
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PT secondary question
Started by bigdaddy |
16 Replies
7851 Views |
September 04, 2010, 12:50:52 am by zendragon63 |
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12 Replies
6539 Views |
September 04, 2010, 12:14:34 am by Tone Junkie |
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Resistor Question ???
Started by TIMBO |
2 Replies
4124 Views |
September 03, 2010, 10:16:30 pm by TIMBO |
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