Welcome To the Hoffman Amplifiers Forum
April 27, 2026, 06:33:08 pm
Welcome To the Hoffman Amplifiers ForumApril 27, 2026, 06:33:08 pm | ||
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Quad Reverb bias conversion?
Started by Mars-Hall |
17 Replies
6606 Views |
January 24, 2014, 12:58:55 amby PRR |
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7 Replies
4569 Views |
January 24, 2014, 12:48:08 am by PRR |
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5F11 Tweed Vibrolux... Coupling caps...
Started by Phil_Tre |
13 Replies
10084 Views |
January 23, 2014, 09:59:36 pm by HotBluePlates |
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Fisher 500
Started by ernie_jr |
5 Replies
4093 Views |
January 23, 2014, 03:48:28 pm by stratele52 |
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8 Replies
5396 Views |
January 23, 2014, 09:20:37 am by kagliostro |
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Noisy 12AY7 in Bassman 5F6-A
Started by vincenzo |
43 Replies
12807 Views |
January 23, 2014, 09:03:44 am by sluckey |
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Plexi-2203 Marshall wantobe
Started by printer2 |
3 Replies
3970 Views |
January 21, 2014, 10:51:08 pm by printer2 |
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'68 SUper reverb anomalies
Started by Underwood |
2 Replies
3230 Views |
January 21, 2014, 07:13:44 pm by Underwood |
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43 Replies
13943 Views |
January 21, 2014, 10:52:18 am by Willabe |
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Voltage Doubler using a Recto Tube
Started by Jack1962 |
15 Replies
8823 Views |
January 21, 2014, 03:20:34 am by SoundmasterG |
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6L6GC tube testing
Started by dscottguitars |
6 Replies
6501 Views |
January 20, 2014, 06:41:30 pm by dscottguitars |
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19 Replies
7574 Views |
January 20, 2014, 09:14:47 am by terminalgs |
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17 Replies
8734 Views |
January 20, 2014, 01:32:09 am by Toxophilite |
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18 Replies
8675 Views |
January 19, 2014, 09:17:19 pm by Willabe |
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6 Replies
5448 Views |
January 19, 2014, 01:28:56 pm by sluckey |
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32 Replies
16238 Views |
January 19, 2014, 01:24:50 pm by thelonious |
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Outrageous freebie
Started by eleventeen |
11 Replies
6110 Views |
January 19, 2014, 01:04:03 am by Toxophilite |
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Tweed Pro 5e5a cathode/fixed bias switch
Started by TubeGeek |
8 Replies
7155 Views |
January 19, 2014, 12:22:54 am by TubeGeek |
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Bias Supply - Can be done this way ???
Started by kagliostro |
6 Replies
4173 Views |
January 18, 2014, 11:57:55 am by kagliostro |
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Cathode bias EL34 power amp
Started by Tone Junkie |
25 Replies
16817 Views |
January 17, 2014, 03:47:07 am by Tone Junkie |
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Silvertone 1484 speakers
Started by TubeGeek |
5 Replies
4093 Views |
January 17, 2014, 02:34:25 am by SoundmasterG |
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7 Replies
4855 Views |
January 16, 2014, 10:01:10 pm by Toxophilite |
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5 Replies
4384 Views |
January 16, 2014, 01:28:31 am by kagliostro |
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6BR7 & 6BS7 pentodes.
Started by DummyLoad |
4 Replies
6953 Views |
January 15, 2014, 10:11:17 pm by zendragon63 |
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Power transformer for tube preamp/DI
Started by Keppy |
23 Replies
11978 Views |
January 15, 2014, 07:48:38 pm by Keppy |
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Univox Tremolo..
Started by Jack_Hester |
12 Replies
6074 Views |
January 15, 2014, 04:01:39 pm by Willabe |
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Today's Haul
Started by Toxophilite |
18 Replies
6563 Views |
January 15, 2014, 02:03:21 pm by Toxophilite |
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input jack resistor
Started by Underwood |
3 Replies
2855 Views |
January 15, 2014, 11:46:26 am by thelonious |
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9 Replies
4949 Views |
January 15, 2014, 07:58:59 am by stratele52 |
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Too much B+ ??
Started by Toxophilite |
18 Replies
8470 Views |
January 15, 2014, 02:46:20 am by Toxophilite |
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Mosfet CF FX
Started by tubenit |
9 Replies
5589 Views |
January 14, 2014, 05:54:52 pm by HotBluePlates |
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Is this a real active Baxandall TS ?
Started by kagliostro |
2 Replies
2826 Views |
January 14, 2014, 07:42:19 am by kagliostro |
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fender 5e3
Started by roadking |
21 Replies
7531 Views |
January 14, 2014, 12:15:00 am by PRR |
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Guild 66-J Amp..........
Started by Jack_Hester |
18 Replies
11248 Views |
January 13, 2014, 07:58:44 pm by Steve_P |
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Checking Bias on a 5F6A
Started by dpm309 |
14 Replies
5655 Views |
January 12, 2014, 11:40:04 am by sluckey |
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Overall output questions?
Started by Speakz |
5 Replies
3357 Views |
January 11, 2014, 09:31:12 pm by HotBluePlates |
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Hudson SJ and TOSII in action
Started by TIMBO |
8 Replies
4562 Views |
January 11, 2014, 07:14:38 pm by TIMBO |
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48 Replies
17136 Views |
January 11, 2014, 05:46:37 pm by foghornleghorn |
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New amp build.....input wanted!
Started by Stankfut |
19 Replies
9057 Views |
January 11, 2014, 05:42:30 pm by Willabe |
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Correct primary impedance for a GA-20 OT
Started by john59 |
3 Replies
2919 Views |
January 11, 2014, 12:11:29 am by jazbo8 |
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Silver Jubilee Lite
Started by TIMBO |
0 Replies
2273 Views |
January 10, 2014, 06:28:52 pm by TIMBO |
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Bass boost switch on brown deluxe?
Started by Quatro |
8 Replies
4123 Views |
January 10, 2014, 12:47:00 am by sluckey |
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Help with my Mesa MarkIIB
Started by Marcus |
2 Replies
2600 Views |
January 09, 2014, 05:20:30 pm by stratele52 |
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Peavey Road Master Hack
Started by silverfox |
7 Replies
5012 Views |
January 09, 2014, 02:55:52 pm by silverfox |
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Master volume pot taper.
Started by FranciscoPerez |
27 Replies
8787 Views |
January 09, 2014, 10:45:38 am by thelonious |
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Unfair Bias ?
Started by Toxophilite |
21 Replies
7338 Views |
January 09, 2014, 03:25:19 am by Toxophilite |
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811 insanity
Started by 6G6 |
11 Replies
5158 Views |
January 08, 2014, 09:11:45 pm by PRR |
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Amp weirdness
Started by 3choplex |
6 Replies
3435 Views |
January 08, 2014, 05:24:43 pm by Platefire |
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134 Replies
44986 Views |
January 08, 2014, 05:20:34 pm by plexi50 |
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Stumped on a 5f11
Started by jukelemon |
11 Replies
6812 Views |
January 08, 2014, 01:22:22 pm by stratele52 |
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