Welcome To the Hoffman Amplifiers Forum
January 24, 2026, 08:54:20 pm
Welcome To the Hoffman Amplifiers ForumJanuary 24, 2026, 08:54:20 pm | ||
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| rafe and 43 Guests are viewing this board. | ||||
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help with old radio????
Started by zapped |
11 Replies
5688 Views |
January 14, 2012, 10:54:11 pmby PRR |
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1939 guitar amp
Started by PRR |
29 Replies
12053 Views |
January 14, 2012, 11:23:30 am by tubeswell |
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??? Amp Model
Started by plexi50 |
15 Replies
8375 Views |
January 13, 2012, 11:45:42 pm by bigsbybender |
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Built A Sch 40 GA-5 Today
Started by shortfuse |
23 Replies
8382 Views |
January 13, 2012, 10:39:19 pm by shortfuse |
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rectifier heater question
Started by bnew63 |
2 Replies
3014 Views |
January 13, 2012, 06:46:01 pm by bnew63 |
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5 Replies
4487 Views |
January 13, 2012, 06:45:23 pm by Willabe |
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7591 conversion to 6V6
Started by oldhippy |
25 Replies
23372 Views |
January 13, 2012, 04:10:41 pm by oldhippy |
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Alamo Electra 2570 Need a little help
Started by dude |
1 Replies
6237 Views |
January 13, 2012, 01:56:52 pm by dude |
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question regarding modifying pot value
Started by 12AX7 |
5 Replies
5489 Views |
January 13, 2012, 12:11:05 am by PRR |
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Verlage Amplifier troubles
Started by TubeGeek |
4 Replies
4918 Views |
January 12, 2012, 11:30:53 pm by PRR |
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triode / pentode
Started by Colas LeGrippa |
32 Replies
32746 Views |
January 12, 2012, 05:44:35 pm by HotBluePlates |
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7 Replies
5234 Views |
January 12, 2012, 08:57:13 am by kagliostro |
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choke help
Started by ernie_jr |
7 Replies
4610 Views |
January 11, 2012, 09:14:25 pm by HotBluePlates |
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negative feedback question
Started by navdave |
9 Replies
5717 Views |
January 11, 2012, 08:35:26 pm by printer2 |
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NTE558 diode
Started by schoolie |
4 Replies
3116 Views |
January 11, 2012, 07:00:52 pm by schoolie |
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HEADPHONE tube amp
Started by Colas LeGrippa |
13 Replies
7736 Views |
January 11, 2012, 06:08:16 pm by Colas LeGrippa |
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Inpedance Mismatch Question
Started by blown240 |
14 Replies
6290 Views |
January 11, 2012, 02:59:49 pm by jojokeo |
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Heater supply question
Started by John |
2 Replies
2718 Views |
January 11, 2012, 12:37:10 pm by John |
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5 Replies
5243 Views |
January 11, 2012, 09:07:13 am by kagliostro |
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Master Volume On 100 Watt SF Twin
Started by plexi50 |
6 Replies
3858 Views |
January 10, 2012, 03:15:57 pm by chuggy |
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internal connection
Started by jeff |
20 Replies
8158 Views |
January 10, 2012, 11:21:19 am by tonewood |
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OPT questions
Started by bnew63 |
6 Replies
4262 Views |
January 09, 2012, 03:10:14 pm by PRR |
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vintage diodes
Started by embotone |
2 Replies
2862 Views |
January 09, 2012, 03:00:58 pm by PRR |
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Question about Hoffman 5f6a bias circuit
Started by schoolie |
22 Replies
8522 Views |
January 09, 2012, 02:57:26 pm by Ed_Chambley |
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Rating of pots as variable resistors
Started by jeff |
5 Replies
3199 Views |
January 09, 2012, 02:46:25 pm by PRR |
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1 Replies
3686 Views |
January 09, 2012, 12:42:06 pm by topbrent |
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Hot Rod deluxe problem
Started by LooseChange |
3 Replies
2915 Views |
January 09, 2012, 10:43:24 am by birt |
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9 Replies
4581 Views |
January 08, 2012, 04:00:03 pm by jeff |
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12AX7's enhance cap question
Started by bluesbear |
6 Replies
4064 Views |
January 08, 2012, 09:08:41 am by tubenit |
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Just build Deluxe Reverb
Started by kwm488 |
7 Replies
4867 Views |
January 08, 2012, 08:50:33 am by birt |
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36 Replies
21403 Views |
January 07, 2012, 07:10:29 pm by Platefire |
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New Cap Tweak
Started by tubenit |
0 Replies
2920 Views |
January 07, 2012, 06:19:54 pm by tubenit |
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Treble bleed cap value calculation?
Started by 12AX7 |
1 Replies
5075 Views |
January 07, 2012, 05:57:28 pm by PRR |
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grid stopper vs voltage divider
Started by 12AX7 |
3 Replies
6331 Views |
January 06, 2012, 07:44:00 pm by HotBluePlates |
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2 Replies
3466 Views |
January 06, 2012, 12:07:05 pm by SleepLess |
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amplifier power calculation
Started by Colas LeGrippa |
10 Replies
15242 Views |
January 06, 2012, 11:18:31 am by jjasilli |
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brand new (mostly)
Started by Jamesbarner |
5 Replies
3407 Views |
January 05, 2012, 10:48:06 pm by TIMBO |
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vibrato circuit wanted !
Started by Colas LeGrippa |
6 Replies
3304 Views |
January 05, 2012, 11:52:48 am by panhead |
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8 Replies
4865 Views |
January 05, 2012, 11:51:28 am by kagliostro |
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11 Replies
5173 Views |
January 05, 2012, 07:49:43 am by sluckey |
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PPMIV In 5f6a Switchable
Started by Ed_Chambley |
23 Replies
8826 Views |
January 04, 2012, 03:47:49 pm by Ed_Chambley |
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VVR installation
Started by Colas LeGrippa |
7 Replies
4599 Views |
January 04, 2012, 08:37:35 am by Colas LeGrippa |
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21 Replies
7214 Views |
January 04, 2012, 08:05:47 am by Jennings |
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Lay down Fender PT mounting.
Started by Willabe |
7 Replies
3596 Views |
January 04, 2012, 07:16:31 am by stingray_65 |
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TVM PK200/J P.A. tube amp.
Started by chocopower |
4 Replies
3975 Views |
January 04, 2012, 02:40:23 am by chocopower |
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please teach me how can i fix it
Started by kwm488 |
6 Replies
4661 Views |
January 03, 2012, 04:21:01 pm by Jack1962 |
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Reverb Circuit
Started by Jack1962 |
6 Replies
4799 Views |
January 03, 2012, 04:05:33 pm by Jack1962 |
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Tweed Overdrive w/ 2 CF
Started by tubenit |
43 Replies
14711 Views |
January 03, 2012, 01:04:49 am by TIMBO |
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In the Christmas Spirit
Started by punkykatt |
17 Replies
8488 Views |
January 02, 2012, 07:33:17 pm by plexi50 |
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13 Replies
9662 Views |
January 02, 2012, 03:04:23 pm by Ed_Chambley |
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