Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:41:28 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:41:28 am | ||
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| 0 Members and 19 Guests are viewing this board. | ||||
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1965 Princeton AA964 Bias Problem
Started by plexi50 |
9 Replies
2892 Views |
January 23, 2023, 04:10:28 amby Latole |
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15 Replies
3893 Views |
January 22, 2023, 11:09:10 am by tubeswell |
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Speaker issue with tube amp
Started by Erik Aa |
4 Replies
2025 Views |
January 21, 2023, 12:01:32 pm by mresistor |
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Fixed Bias Question
Started by Jennings |
5 Replies
2424 Views |
January 20, 2023, 11:12:35 am by Jennings |
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14 Replies
4750 Views |
January 20, 2023, 09:09:10 am by jordan86 |
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Sizzle in Blues Junior at idle
Started by dude |
16 Replies
3285 Views |
January 19, 2023, 01:59:58 pm by acheld |
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LND150 buffered loop options
Started by craig.kimble |
3 Replies
2767 Views |
January 19, 2023, 09:23:45 am by kagliostro |
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Judge my latest build
Started by Dyerseve726 |
34 Replies
7089 Views |
January 19, 2023, 08:25:19 am by Dyerseve726 |
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Modding jcm800
Started by fossilshark |
10 Replies
2888 Views |
January 19, 2023, 08:02:25 am by Williamblake |
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20 Replies
4266 Views |
January 18, 2023, 05:33:27 pm by bmccowan |
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Surfing the Glass
Started by Lectroid |
16 Replies
3785 Views |
January 18, 2023, 11:46:53 am by Lectroid |
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Ampeg V4 Bias Issues
Started by AHeck |
41 Replies
6873 Views |
January 17, 2023, 11:27:59 am by shooter |
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9 Replies
3964 Views |
January 17, 2023, 10:16:55 am by Lectroid |
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Super Reverb - Bias Filtering
Started by 410_Fanatic |
9 Replies
3778 Views |
January 16, 2023, 08:35:47 pm by 410_Fanatic |
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The Benson Model 300H
Started by Platefire |
4 Replies
2267 Views |
January 16, 2023, 05:22:34 pm by tdvt |
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Sluckey "Tremonator" Voltage Question
Started by W5FH |
3 Replies
1975 Views |
January 15, 2023, 03:16:18 pm by sluckey |
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Cathode biased amp
Started by rake |
21 Replies
4533 Views |
January 14, 2023, 09:50:07 pm by rake |
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5E3 in a 5F2 chassis
Started by Brownie |
2 Replies
1926 Views |
January 14, 2023, 09:11:45 pm by Brownie |
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4 Replies
2368 Views |
January 14, 2023, 12:29:38 pm by brewdude |
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5F1 From Bitz
Started by TIMBO |
20 Replies
4676 Views |
January 14, 2023, 12:57:24 am by TIMBO |
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ELK viking 100
Started by DummyLoad |
32 Replies
9530 Views |
January 13, 2023, 11:45:31 am by JZRepair |
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Blues Jr Schematic VS layout
Started by Room335 |
2 Replies
2033 Views |
January 13, 2023, 07:34:51 am by EL34 |
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P2P Tweedle Dee - OT Mixup
Started by Thisismyname |
8 Replies
2588 Views |
January 13, 2023, 03:09:20 am by pdf64 |
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25 Replies
5120 Views |
January 13, 2023, 01:03:43 am by PRR |
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Ultralinear Super Reverb
Started by AlNewman |
8 Replies
2901 Views |
January 12, 2023, 08:36:40 pm by AlNewman |
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TapeMaster SA-13 Chop-n-bob.
Started by DummyLoad |
16 Replies
4281 Views |
January 12, 2023, 06:10:06 pm by rybcage |
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switching power cord leads
Started by islandamp |
13 Replies
3571 Views |
January 12, 2023, 12:52:45 pm by JPK |
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Can i run 2 x EL34 with this OT?
Started by joesatch |
22 Replies
4285 Views |
January 11, 2023, 05:58:20 pm by 66Strat |
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Grounding the presence pot
Started by dude |
4 Replies
2443 Views |
January 11, 2023, 05:50:54 pm by sluckey |
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Recording/Headphone outputs
Started by hylaphone |
6 Replies
2295 Views |
January 11, 2023, 10:40:20 am by hylaphone |
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9 Replies
3516 Views |
January 10, 2023, 08:16:57 pm by tubeswell |
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Out Damn Hiss!
Started by CrocMule |
28 Replies
5837 Views |
January 10, 2023, 06:01:15 pm by g-man |
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Hotrod Deluxe Reverb problem
Started by shaun |
18 Replies
5258 Views |
January 10, 2023, 05:13:26 pm by rake |
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P2P Tweedle Dee - Placement Question
Started by Thisismyname |
4 Replies
1959 Views |
January 10, 2023, 04:49:50 pm by Thisismyname |
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6v6 Plexi Layout / Build questions
Started by martinman |
3 Replies
2271 Views |
January 09, 2023, 09:16:10 pm by sluckey |
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Traynor YB1 MKII Mod
Started by shaun |
5 Replies
2604 Views |
January 09, 2023, 01:11:40 pm by shaun |
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Relay circuit supply voltage question
Started by NSB_Chris |
11 Replies
6682 Views |
January 08, 2023, 10:28:51 am by jloewenheim |
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repurpose regulated PS
Started by joesatch |
5 Replies
2322 Views |
January 08, 2023, 08:35:50 am by joesatch |
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2 Replies
2147 Views |
January 07, 2023, 06:15:57 pm by J3ona1 |
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Question about resistor power rating?
Started by AlNewman |
22 Replies
4745 Views |
January 07, 2023, 02:38:40 pm by AlNewman |
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6 Replies
2989 Views |
January 07, 2023, 12:55:47 pm by PRR |
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Interesting tremolo circuit
Started by TenderTendon |
10 Replies
3559 Views |
January 07, 2023, 08:46:27 am by kagliostro |
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OT resistance
Started by dude |
28 Replies
5196 Views |
January 06, 2023, 10:17:16 pm by dude |
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Choke and Power Transformer interference
Started by scstill |
20 Replies
4786 Views |
January 06, 2023, 06:30:15 pm by PRR |
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PT mounting question
Started by joesatch |
4 Replies
2385 Views |
January 06, 2023, 03:56:30 pm by jim |
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What are doing those zener diodes ?
Started by kagliostro |
11 Replies
3427 Views |
January 05, 2023, 07:07:51 pm by kagliostro |
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plexi preamp voltage
Started by McAbe |
17 Replies
5399 Views |
January 05, 2023, 05:00:27 pm by McAbe |
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6 Replies
3097 Views |
January 05, 2023, 06:39:23 am by kagliostro |
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PT has two sets of Primary inputs?
Started by joesatch |
3 Replies
2176 Views |
January 04, 2023, 09:29:35 pm by joesatch |
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Spec'ing a PT
Started by joesatch |
21 Replies
4411 Views |
January 04, 2023, 06:23:52 pm by HotBluePlates |
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