Welcome To the Hoffman Amplifiers Forum
March 11, 2026, 04:00:33 pm
Welcome To the Hoffman Amplifiers ForumMarch 11, 2026, 04:00:33 pm | ||
| Subject / Started by | Replies / Views | Last post  |
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| dogburn, passaloutre, Glenn and 97 Guests are viewing this board. | ||||
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Where to ground the first filter stage.
Started by Mike_J |
23 Replies
7246 Views |
March 03, 2021, 09:02:18 pmby tubeswell |
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Choosing Power Transformers
Started by acheld |
7 Replies
4739 Views |
March 03, 2021, 08:17:04 pm by acheld |
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0 Replies
2424 Views |
March 03, 2021, 05:54:41 pm by Mike_J |
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1977 Princeton Reverb PT failure?
Started by wsscott |
23 Replies
6151 Views |
March 03, 2021, 05:13:41 pm by wsscott |
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6 Replies
3662 Views |
March 03, 2021, 03:01:40 pm by Mike_J |
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New most terrible job ever.
Started by Mike_J |
9 Replies
4445 Views |
March 03, 2021, 06:12:20 am by Mike_J |
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14 Replies
4178 Views |
March 03, 2021, 12:47:11 am by d95err |
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Post PI Master Volume Coupling Cap
Started by scstill |
2 Replies
2485 Views |
March 02, 2021, 04:06:49 pm by thetragichero |
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B&H Filmosound 626 amp
Started by Zonnebloem |
2 Replies
2802 Views |
March 02, 2021, 03:56:08 pm by Zonnebloem |
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2 Cathode Followers on the same tube?
Started by dsmith9 |
5 Replies
3070 Views |
March 02, 2021, 03:03:30 pm by tubeswell |
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Reverb pedal jack
Started by dude |
6 Replies
4019 Views |
March 02, 2021, 01:08:39 pm by sluckey |
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Doug's shielded wire
Started by munkeyboy |
13 Replies
6354 Views |
March 02, 2021, 09:30:21 am by EL34 |
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67 Replies
16415 Views |
March 01, 2021, 09:48:28 pm by wittyjeff |
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4 Replies
2763 Views |
March 01, 2021, 09:00:31 pm by walkman |
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14 Replies
6542 Views |
March 01, 2021, 03:25:28 pm by gitarzysta |
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2 Replies
4157 Views |
March 01, 2021, 03:10:16 pm by sluckey |
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New Amp Introduction—Brown Junior
Started by brewdude |
7 Replies
3055 Views |
February 28, 2021, 09:17:05 pm by wittyjeff |
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Global Negitive Feedback with Top Cut?
Started by DuaneOh |
6 Replies
3664 Views |
February 28, 2021, 09:14:02 pm by wittyjeff |
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6K6GT push pull limits
Started by brewdude |
17 Replies
6027 Views |
February 28, 2021, 06:24:30 pm by brewdude |
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Plastic Toroidal Xfmr mount?
Started by JustMike |
1 Replies
2247 Views |
February 28, 2021, 01:42:36 pm by thetragichero |
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Need help.
Started by Mike_J |
8 Replies
3038 Views |
February 27, 2021, 11:56:36 pm by glass54 |
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How to test/repair speaker?
Started by BobL |
8 Replies
3905 Views |
February 27, 2021, 08:46:42 pm by acheld |
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Filament wiring gauge
Started by Graydigger |
37 Replies
12430 Views |
February 27, 2021, 06:23:55 pm by scstill |
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6 Replies
3898 Views |
February 27, 2021, 06:17:03 pm by tubeswell |
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Suppliers (as of 2021)
Started by munkeyboy |
24 Replies
15700 Views |
February 27, 2021, 02:55:12 pm by vampwizzard |
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14 Replies
6045 Views |
February 27, 2021, 12:50:09 pm by BobL |
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Tagboard question
Started by dude |
11 Replies
3957 Views |
February 27, 2021, 11:28:35 am by dude |
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UA OX catching amp on fire
Started by British1011 |
5 Replies
3661 Views |
February 27, 2021, 09:57:59 am by British1011 |
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Planning my next build (simplified AC15ish)
Started by aon |
12 Replies
4455 Views |
February 27, 2021, 07:38:20 am by aon |
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line out for single ended tube amp
Started by mazzgreg |
2 Replies
2562 Views |
February 26, 2021, 03:22:47 pm by PRR |
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Confused again.
Started by Mike_J |
19 Replies
6132 Views |
February 26, 2021, 10:12:47 am by Mike_J |
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Negative Feedback, Where To Get It From?
Started by DuaneOh |
8 Replies
4897 Views |
February 25, 2021, 06:23:15 pm by DuaneOh |
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Ampeg B 12 XT
Started by Big chief |
8 Replies
3922 Views |
February 25, 2021, 03:37:51 pm by Big chief |
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1959 Supro Coronado 1690T on the bench
Started by TubeGeek |
16 Replies
10210 Views |
February 25, 2021, 12:36:19 pm by PRR |
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Cranked Amp "Chirping"?
Started by jordan86 |
4 Replies
3983 Views |
February 25, 2021, 10:02:59 am by SILVERGUN |
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Spicemodel for reverb tanks
Started by PRR |
0 Replies
3007 Views |
February 24, 2021, 10:08:43 pm by PRR |
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Screen and Plate Switch pop in AC15 build
Started by shaun |
12 Replies
4744 Views |
February 24, 2021, 07:01:55 pm by HotBluePlates |
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How long do Edcor transformers take?
Started by steveo7868 |
11 Replies
4606 Views |
February 24, 2021, 06:36:07 pm by munkeyboy |
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7 Replies
3521 Views |
February 24, 2021, 05:26:52 pm by tomof63 |
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1 Replies
2473 Views |
February 24, 2021, 10:59:30 am by thetragichero |
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1 Replies
3432 Views |
February 24, 2021, 08:18:12 am by sluckey |
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Incoming Amp-PRS 25th Anniversary
Started by JustMike |
10 Replies
4846 Views |
February 23, 2021, 01:40:56 pm by shooter |
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switching channels with relays questions
Started by Bieworm |
5 Replies
3561 Views |
February 23, 2021, 01:39:23 pm by Bieworm |
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20 Replies
7585 Views |
February 23, 2021, 12:59:56 pm by DougGuy |
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Single Input 5f6a Questions.
Started by thebard |
4 Replies
2886 Views |
February 23, 2021, 01:37:32 am by thebard |
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SOLVED: Stuck on this build
Started by munkeyboy |
45 Replies
10031 Views |
February 22, 2021, 09:35:59 pm by PRR |
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3 Replies
2995 Views |
February 22, 2021, 09:28:17 pm by tubeswell |
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Preamp Switching
Started by dunner84 |
2 Replies
3024 Views |
February 22, 2021, 06:40:34 pm by dunner84 |
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21 Replies
8865 Views |
February 22, 2021, 03:55:33 pm by munkeyboy |
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Fender amp biasing methods
Started by goodizzy |
1 Replies
2862 Views |
February 22, 2021, 11:05:15 am by kagliostro |
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