Welcome To the Hoffman Amplifiers Forum
March 10, 2026, 10:15:55 pm
Welcome To the Hoffman Amplifiers ForumMarch 10, 2026, 10:15:55 pm | ||
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53 Replies
12678 Views |
September 29, 2023, 01:13:19 amby DummyLoad |
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How to measure tube cathode current?
Started by pbman1953 |
12 Replies
9357 Views |
September 28, 2023, 11:31:34 pm by zozoe |
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7 Replies
4106 Views |
September 28, 2023, 03:56:38 pm by HotBluePlates |
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Audio Transformer reference
Started by acheld |
29 Replies
7495 Views |
September 28, 2023, 03:42:34 pm by HotBluePlates |
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Hammond AO-35 conversion
Started by joesatch |
7 Replies
4886 Views |
September 28, 2023, 11:09:59 am by bmccowan |
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5E3 uneven frequency response
Started by Arry |
17 Replies
5803 Views |
September 28, 2023, 05:03:03 am by HotBluePlates |
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Gibson GA-20 RVT T-Filter Question
Started by Deric |
2 Replies
2955 Views |
September 27, 2023, 09:40:26 pm by Deric |
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Help biasing an amp, PP EL34
Started by starseeds |
30 Replies
9115 Views |
September 27, 2023, 07:32:58 pm by AlNewman |
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Unusual capacitor values
Started by jada3909 |
3 Replies
2670 Views |
September 27, 2023, 06:21:31 pm by acheld |
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Princeton Reverb Transformer questions
Started by J3ona1 |
12 Replies
4892 Views |
September 27, 2023, 08:50:27 am by Willabe |
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15 Replies
4633 Views |
September 26, 2023, 10:39:12 pm by SoundmasterG |
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Heater Center Tap Question
Started by imgumby001 |
11 Replies
4108 Views |
September 26, 2023, 05:15:08 pm by passaloutre |
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9 Replies
5668 Views |
September 26, 2023, 01:06:59 pm by Jalmeida |
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7 Replies
4660 Views |
September 26, 2023, 05:18:22 am by HotBluePlates |
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Getting old and how to deal it!
Started by Planobilly |
24 Replies
6837 Views |
September 25, 2023, 08:51:57 pm by Guy77 |
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Bias settings for common power tubes
Started by TIMBO |
11 Replies
4331 Views |
September 25, 2023, 12:21:55 pm by tubeswell |
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potentiometers that stay at noon?
Started by fossilshark |
1 Replies
2641 Views |
September 25, 2023, 09:24:13 am by sluckey |
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RCA 307 conversion
Started by AlNewman |
28 Replies
7931 Views |
September 25, 2023, 01:49:45 am by AlNewman |
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transformer identification help
Started by joesatch |
6 Replies
4062 Views |
September 24, 2023, 12:41:41 pm by HotBluePlates |
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NOS/Vintage tubes worth it??
Started by Jalmeida |
18 Replies
5954 Views |
September 24, 2023, 12:30:29 pm by HotBluePlates |
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1 Replies
3044 Views |
September 24, 2023, 11:03:40 am by HotBluePlates |
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6ak5 in place of EF86
Started by imgumby001 |
4 Replies
3648 Views |
September 24, 2023, 08:50:18 am by imgumby001 |
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OPT defective ?
Started by Colas LeGrippa |
9 Replies
4596 Views |
September 23, 2023, 01:57:32 pm by Platefire |
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Vox with Fender channels?
Started by roseblood11 |
3 Replies
3908 Views |
September 23, 2023, 07:17:07 am by dwinstonwood |
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Univox U102 Combo Cabinet Dimensions
Started by astronomicum |
5 Replies
3480 Views |
September 22, 2023, 09:28:11 pm by bmccowan |
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Bassman 50 grounding
Started by labb |
3 Replies
3070 Views |
September 22, 2023, 12:50:06 pm by PRR |
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Fender Bassman 50
Started by labb |
30 Replies
9652 Views |
September 21, 2023, 05:02:28 pm by shooter |
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5 Replies
3509 Views |
September 21, 2023, 01:29:22 pm by Williamblake |
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24 Replies
9463 Views |
September 21, 2023, 12:58:16 pm by stratomaster |
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51 Replies
14534 Views |
September 21, 2023, 05:41:33 am by Dave |
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9 Replies
4620 Views |
September 21, 2023, 12:47:15 am by kagliostro |
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Effects loop build question
Started by audiosalvage |
1 Replies
3041 Views |
September 20, 2023, 09:49:33 pm by PRR |
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Speaker jack speaker loads
Started by Jalmeida |
2 Replies
3024 Views |
September 20, 2023, 12:33:56 pm by PRR |
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Variac use in new build startup
Started by dude |
3 Replies
3706 Views |
September 19, 2023, 09:24:32 pm by bmccowan |
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National Dobro 400
Started by isaac_teller |
4 Replies
3673 Views |
September 19, 2023, 10:47:42 am by isaac_teller |
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Resistor placement
Started by Diverted |
8 Replies
3792 Views |
September 19, 2023, 10:29:58 am by Latole |
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Blues Jr frying preamp tubes
Started by mxrshiver |
5 Replies
3817 Views |
September 19, 2023, 06:09:10 am by pdf64 |
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Gibson GA-30 need help picking capacitors
Started by delray |
11 Replies
5617 Views |
September 18, 2023, 10:40:31 pm by Platefire |
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11 Replies
4699 Views |
September 18, 2023, 09:26:51 am by kagliostro |
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Changing value of potentiometer
Started by Mypalmurph |
22 Replies
6862 Views |
September 18, 2023, 02:55:27 am by Colas LeGrippa |
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9 Replies
4720 Views |
September 17, 2023, 09:45:38 pm by HotBluePlates |
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Bassman 5F6-A build
Started by Keyboy |
15 Replies
5985 Views |
September 17, 2023, 09:38:55 pm by PRR |
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Musicman 2100 RD Power Transformer
Started by plexi50 |
3 Replies
3356 Views |
September 17, 2023, 06:42:52 pm by plexi50 |
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6V6 tweed bassman advice
Started by Bieworm |
38 Replies
10165 Views |
September 17, 2023, 01:20:45 pm by Bieworm |
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New Build with KT-88's
Started by W5FH |
1 Replies
3071 Views |
September 17, 2023, 08:50:15 am by W5FH |
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Revibe Idea, 3ft reverb tank
Started by paulcblais |
2 Replies
3015 Views |
September 17, 2023, 06:17:21 am by Williamblake |
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Ohms mismatch or swap output trans
Started by Mypalmurph |
4 Replies
3519 Views |
September 17, 2023, 05:22:32 am by pdf64 |
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Hoffman_AB763_1 channel Completed
Started by RoadShow |
4 Replies
3911 Views |
September 16, 2023, 04:45:06 pm by mresistor |
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Resistors Making An Amp Quiet...
Started by sbeckett |
4 Replies
3766 Views |
September 16, 2023, 01:46:47 pm by scstill |
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1966 Fender Super Reverb Maintenance
Started by flacman |
9 Replies
5098 Views |
September 16, 2023, 01:24:34 pm by scstill |
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