Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:12:18 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:12:18 am | ||
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5E3 uneven frequency response
Started by Arry |
17 Replies
3984 Views |
September 28, 2023, 05:03:03 amby HotBluePlates |
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Gibson GA-20 RVT T-Filter Question
Started by Deric |
2 Replies
2216 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
5945 Views |
September 27, 2023, 07:32:58 pm by AlNewman |
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Unusual capacitor values
Started by jada3909 |
3 Replies
1988 Views |
September 27, 2023, 06:21:31 pm by acheld |
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Princeton Reverb Transformer questions
Started by J3ona1 |
12 Replies
3609 Views |
September 27, 2023, 08:50:27 am by Willabe |
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15 Replies
3322 Views |
September 26, 2023, 10:39:12 pm by SoundmasterG |
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Heater Center Tap Question
Started by imgumby001 |
11 Replies
3091 Views |
September 26, 2023, 05:15:08 pm by passaloutre |
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9 Replies
4044 Views |
September 26, 2023, 01:06:59 pm by Jalmeida |
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7 Replies
3166 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
4881 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
3058 Views |
September 25, 2023, 12:21:55 pm by tubeswell |
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potentiometers that stay at noon?
Started by fossilshark |
1 Replies
1985 Views |
September 25, 2023, 09:24:13 am by sluckey |
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RCA 307 conversion
Started by AlNewman |
28 Replies
5730 Views |
September 25, 2023, 01:49:45 am by AlNewman |
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transformer identification help
Started by joesatch |
6 Replies
2790 Views |
September 24, 2023, 12:41:41 pm by HotBluePlates |
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NOS/Vintage tubes worth it??
Started by Jalmeida |
18 Replies
4271 Views |
September 24, 2023, 12:30:29 pm by HotBluePlates |
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1 Replies
1988 Views |
September 24, 2023, 11:03:40 am by HotBluePlates |
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6ak5 in place of EF86
Started by imgumby001 |
4 Replies
2655 Views |
September 24, 2023, 08:50:18 am by imgumby001 |
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OPT defective ?
Started by Colas LeGrippa |
9 Replies
3246 Views |
September 23, 2023, 01:57:32 pm by Platefire |
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Vox with Fender channels?
Started by roseblood11 |
3 Replies
2532 Views |
September 23, 2023, 07:17:07 am by dwinstonwood |
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Univox U102 Combo Cabinet Dimensions
Started by astronomicum |
5 Replies
2299 Views |
September 22, 2023, 09:28:11 pm by bmccowan |
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Bassman 50 grounding
Started by labb |
3 Replies
2091 Views |
September 22, 2023, 12:50:06 pm by PRR |
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Fender Bassman 50
Started by labb |
30 Replies
6687 Views |
September 21, 2023, 05:02:28 pm by shooter |
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5 Replies
2446 Views |
September 21, 2023, 01:29:22 pm by Williamblake |
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24 Replies
7196 Views |
September 21, 2023, 12:58:16 pm by stratomaster |
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51 Replies
9651 Views |
September 21, 2023, 05:41:33 am by Dave |
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9 Replies
3100 Views |
September 21, 2023, 12:47:15 am by kagliostro |
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Effects loop build question
Started by audiosalvage |
1 Replies
2027 Views |
September 20, 2023, 09:49:33 pm by PRR |
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Speaker jack speaker loads
Started by Jalmeida |
2 Replies
2052 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
2402 Views |
September 19, 2023, 09:24:32 pm by bmccowan |
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National Dobro 400
Started by isaac_teller |
4 Replies
2476 Views |
September 19, 2023, 10:47:42 am by isaac_teller |
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Resistor placement
Started by Diverted |
8 Replies
2601 Views |
September 19, 2023, 10:29:58 am by Latole |
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Blues Jr frying preamp tubes
Started by mxrshiver |
5 Replies
2444 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
3702 Views |
September 18, 2023, 10:40:31 pm by Platefire |
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11 Replies
2909 Views |
September 18, 2023, 09:26:51 am by kagliostro |
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Changing value of potentiometer
Started by Mypalmurph |
22 Replies
4341 Views |
September 18, 2023, 02:55:27 am by Colas LeGrippa |
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9 Replies
3194 Views |
September 17, 2023, 09:45:38 pm by HotBluePlates |
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Bassman 5F6-A build
Started by Keyboy |
15 Replies
4116 Views |
September 17, 2023, 09:38:55 pm by PRR |
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Musicman 2100 RD Power Transformer
Started by plexi50 |
3 Replies
2176 Views |
September 17, 2023, 06:42:52 pm by plexi50 |
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6V6 tweed bassman advice
Started by Bieworm |
38 Replies
6853 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
1985 Views |
September 17, 2023, 08:50:15 am by W5FH |
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Revibe Idea, 3ft reverb tank
Started by paulcblais |
2 Replies
1902 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
2225 Views |
September 17, 2023, 05:22:32 am by pdf64 |
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Hoffman_AB763_1 channel Completed
Started by RoadShow |
4 Replies
2556 Views |
September 16, 2023, 04:45:06 pm by mresistor |
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Resistors Making An Amp Quiet...
Started by sbeckett |
4 Replies
2471 Views |
September 16, 2023, 01:46:47 pm by scstill |
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1966 Fender Super Reverb Maintenance
Started by flacman |
9 Replies
3481 Views |
September 16, 2023, 01:24:34 pm by scstill |
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Additional fuses advice
Started by 22uf |
5 Replies
2487 Views |
September 16, 2023, 08:35:35 am by HotBluePlates |
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crate 3112 convert to tube rectifier
Started by toposeven |
2 Replies
2105 Views |
September 15, 2023, 06:52:40 am by kagliostro |
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4 Replies
2715 Views |
September 15, 2023, 06:48:53 am by Carlsoti |
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Dual Lite amp project
Started by sluckey |
43 Replies
11341 Views |
September 14, 2023, 10:32:56 pm by capohk |
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AC15HW1 power issue
Started by Travis8 |
7 Replies
2747 Views |
September 14, 2023, 07:24:30 am by Latole |
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