Welcome To the Hoffman Amplifiers Forum
January 23, 2026, 05:58:54 pm
Welcome To the Hoffman Amplifiers ForumJanuary 23, 2026, 05:58:54 pm | ||
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| astronomicum and 107 Guests are viewing this board. | ||||
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AC15 clone using Hoffman AC30 layout
Started by Big_Mike |
4 Replies
1102 Views |
January 03, 2026, 11:22:30 amby Big_Mike |
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15 Replies
1032 Views |
January 02, 2026, 07:20:07 pm by AlNewman |
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18watt stout in AO35 chassis
Started by dmp |
20 Replies
3989 Views |
January 02, 2026, 11:50:28 am by Lectroid |
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Filmosound 385 tone stack mod question
Started by markmalin |
14 Replies
1258 Views |
January 02, 2026, 09:33:57 am by markmalin |
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Vox AC30/6 Tremolo Woes c.1960
Started by misterc57 |
4 Replies
687 Views |
January 02, 2026, 08:10:51 am by misterc57 |
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30 Replies
15625 Views |
January 01, 2026, 10:28:02 pm by Redwood |
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Fitting higher value PSU filter caps
Started by Yosser |
6 Replies
588 Views |
January 01, 2026, 09:13:02 pm by HotBluePlates |
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Peavey Mace c.1977 120 Cycle Hum
Started by misterc57 |
0 Replies
282 Views |
January 01, 2026, 01:21:06 pm by misterc57 |
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What to do with a spare 100k pot?
Started by Jennings |
5 Replies
712 Views |
January 01, 2026, 07:26:21 am by Jennings |
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THE HOWLER
Started by TIMBO |
1 Replies
743 Views |
December 30, 2025, 08:55:09 pm by TIMBO |
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Valco Early Model 1215 Voltages
Started by W5FH |
2 Replies
425 Views |
December 30, 2025, 06:35:21 pm by W5FH |
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9 Replies
655 Views |
December 30, 2025, 01:52:07 pm by astronomicum |
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117 Replies
8646 Views |
December 29, 2025, 07:05:57 pm by waldner |
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5 Replies
865 Views |
December 28, 2025, 02:19:18 pm by HotBluePlates |
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AC15 combo chassis
Started by Big_Mike |
1 Replies
471 Views |
December 27, 2025, 04:34:52 pm by bmccowan |
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5e9 Layout with 12DW7 Reverb
Started by J3ona1 |
18 Replies
1023 Views |
December 27, 2025, 12:38:20 pm by tubeswell |
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Tube Bias with a hum after effect
Started by pbman1953 |
1 Replies
375 Views |
December 27, 2025, 11:50:28 am by tubeswell |
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PT safety margin?
Started by Lectroid |
4 Replies
557 Views |
December 25, 2025, 10:24:50 am by Lectroid |
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Pro Junior Hoffman kit
Started by RTL |
8 Replies
869 Views |
December 24, 2025, 03:47:38 pm by RTL |
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8 Replies
781 Views |
December 24, 2025, 01:39:26 pm by pbman1953 |
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Not your usual grounding question . . .
Started by acheld |
3 Replies
523 Views |
December 23, 2025, 02:07:46 pm by acheld |
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Important grounding question
Started by chaf87 |
5 Replies
755 Views |
December 23, 2025, 11:34:21 am by pdf64 |
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Very loud amp is now attenuated
Started by newguitarsmell |
7 Replies
708 Views |
December 23, 2025, 03:28:00 am by Merlin |
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Weber Beam Blocker Install
Started by Thisismyname |
6 Replies
677 Views |
December 21, 2025, 05:32:53 pm by Thisismyname |
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5879 Blues Bassman
Started by TIMBO |
22 Replies
2456 Views |
December 21, 2025, 04:37:57 pm by TIMBO |
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1968 Fender Vibrochamp AA764 Resto
Started by TIMBO |
11 Replies
1370 Views |
December 21, 2025, 04:28:10 am by TIMBO |
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5 Replies
633 Views |
December 20, 2025, 02:26:46 pm by mxrshiver |
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2 Replies
464 Views |
December 20, 2025, 02:25:51 pm by AngryWalrus |
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Princeton Reverb circuit refinements
Started by tristanc |
16 Replies
1786 Views |
December 20, 2025, 12:36:32 pm by stratomaster |
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4 Replies
803 Views |
December 20, 2025, 09:07:01 am by pbman1953 |
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Input matching
Started by Lectroid |
3 Replies
534 Views |
December 19, 2025, 10:35:02 am by Lectroid |
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8 Replies
949 Views |
December 18, 2025, 11:10:01 pm by SEL49 |
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POTS IN BLUES JR
Started by BLUESMAN-2 |
4 Replies
621 Views |
December 18, 2025, 12:24:30 am by BLUESMAN-2 |
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Bootstrapped gain stage questions
Started by hylaphone |
4 Replies
841 Views |
December 17, 2025, 12:30:07 pm by hylaphone |
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Updated Tube Comparison Table
Started by HotBluePlates |
10 Replies
6611 Views |
December 17, 2025, 10:40:48 am by Lectroid |
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8 Replies
973 Views |
December 16, 2025, 04:49:19 pm by burchyk |
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0 Replies
448 Views |
December 16, 2025, 11:19:42 am by TubeAmpDegen |
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15 Replies
2043 Views |
December 16, 2025, 02:25:34 am by maxdissipation |
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Future Filmosound Project....
Started by Khristophorous |
9 Replies
1056 Views |
December 15, 2025, 12:03:38 pm by bmccowan |
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5 Replies
988 Views |
December 15, 2025, 11:56:13 am by kagliostro |
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Curious grid voltages, 6HC8 SE build
Started by turbofeedus |
3 Replies
713 Views |
December 14, 2025, 09:56:14 am by turbofeedus |
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Curious grid voltages, 6HC8 SE build
Started by turbofeedus |
1 Replies
818 Views |
December 13, 2025, 12:09:59 pm by turbofeedus |
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Unmarked tubes ????12a?7
Started by rafe |
7 Replies
859 Views |
December 12, 2025, 05:10:02 pm by Platefire |
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Seeking opinions on strategy
Started by PetePalumbo |
2 Replies
648 Views |
December 12, 2025, 03:12:50 pm by acheld |
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10 Replies
1348 Views |
December 12, 2025, 03:05:58 pm by acheld |
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Fuse size question
Started by Diverted |
2 Replies
662 Views |
December 11, 2025, 11:48:55 pm by kagliostro |
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5 Replies
3660 Views |
December 11, 2025, 06:05:50 pm by Mypalmurph |
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6 Replies
800 Views |
December 07, 2025, 07:15:28 am by pbman1953 |
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2 questions- Tube values and pot value
Started by pbman1953 |
14 Replies
1763 Views |
December 06, 2025, 08:18:22 am by pbman1953 |
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Carvin Legacy 3 bias issue or design?
Started by EddyMunster « 1 2 » |
76 Replies
5002 Views |
December 05, 2025, 10:16:38 pm by EddyMunster |
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