Welcome To the Hoffman Amplifiers Forum
October 24, 2025, 12:19:04 am
Welcome To the Hoffman Amplifiers ForumOctober 24, 2025, 12:19:04 am | ||
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4 Replies
2153 Views |
November 09, 2012, 04:30:39 pmby SILVERGUN |
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6 Replies
6019 Views |
November 09, 2012, 04:10:45 pm by phsyconoodler |
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Princeton Reverb Harsh
Started by plexi50 |
12 Replies
4895 Views |
November 09, 2012, 02:29:31 pm by plexi50 |
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Configuring parallel triode 12AX7
Started by alerich |
19 Replies
18005 Views |
November 09, 2012, 10:29:41 am by SILVERGUN |
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TOL50 el34 bias
Started by tacoma5050 |
4 Replies
3592 Views |
November 09, 2012, 10:06:45 am by SILVERGUN |
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Layout to schematic help please
Started by ncusack |
2 Replies
2068 Views |
November 09, 2012, 04:01:24 am by stratele52 |
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Princeton Reverb Output Transformer
Started by plexi50 |
5 Replies
3235 Views |
November 09, 2012, 03:59:15 am by stratele52 |
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4 Replies
2592 Views |
November 09, 2012, 12:48:34 am by PRR |
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3 Replies
2564 Views |
November 08, 2012, 07:25:14 pm by HotBluePlates |
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Pro 5E5 Amp
Started by plexi50 |
4 Replies
2727 Views |
November 08, 2012, 07:10:19 pm by plexi50 |
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12VDC heater headache
Started by garyboy |
3 Replies
2491 Views |
November 08, 2012, 03:12:20 pm by garyboy |
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5E3 oscillating from feedback loop
Started by six_eight |
12 Replies
5324 Views |
November 08, 2012, 12:15:38 pm by tubeswell |
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pico farad scale caps
Started by llama |
7 Replies
3861 Views |
November 08, 2012, 09:26:08 am by Ed_Chambley |
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104 Replies
26301 Views |
November 07, 2012, 02:34:53 pm by Willabe |
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PAB smoothing mod
Started by tubenit |
1 Replies
2429 Views |
November 07, 2012, 06:59:18 am by Geezer |
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el34 Tube Amp hissy fit
Started by tacoma5050 |
5 Replies
2896 Views |
November 07, 2012, 04:05:42 am by stratele52 |
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tremolo roach
Started by firemedic |
11 Replies
4273 Views |
November 06, 2012, 05:34:49 pm by firemedic |
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Hot PT in Mesa Boogie
Started by Platefire |
29 Replies
9663 Views |
November 06, 2012, 03:08:01 pm by Platefire |
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98 Replies
24539 Views |
November 06, 2012, 01:26:44 pm by Willabe |
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Send Receive schematic
Started by Lizard King |
2 Replies
2605 Views |
November 06, 2012, 10:51:33 am by Lizard King |
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latest build
Started by ernie_jr |
5 Replies
2888 Views |
November 06, 2012, 04:47:32 am by LooseChange |
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1 Replies
3462 Views |
November 06, 2012, 04:29:32 am by stratele52 |
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2 Replies
1969 Views |
November 05, 2012, 08:35:22 pm by PRR |
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Univox Help Needed
Started by cdmarion |
22 Replies
6520 Views |
November 05, 2012, 05:52:09 pm by Ritchie200 |
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Bassman AA865 - {really AC568}
Started by Lizard King |
14 Replies
6542 Views |
November 05, 2012, 07:13:58 am by Lizard King |
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Hum in a GA-19RVT.......
Started by Jack_Hester |
36 Replies
10453 Views |
November 05, 2012, 05:08:04 am by Jack_Hester |
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6G9 Tremolux bias questions
Started by Gone_Fishing |
12 Replies
5128 Views |
November 04, 2012, 11:06:51 am by sluckey |
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13 Replies
7776 Views |
November 04, 2012, 05:57:07 am by six el six |
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24 Replies
9964 Views |
November 03, 2012, 07:16:03 pm by smackoj |
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8 Replies
3900 Views |
November 03, 2012, 11:44:55 am by HotBluePlates |
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12 Replies
4980 Views |
November 02, 2012, 02:41:11 am by kagliostro |
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HRD Crackling: Update Sucess!
Started by plexi50 |
32 Replies
7809 Views |
November 01, 2012, 04:56:33 pm by phsyconoodler |
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coupling caps quality
Started by Colas LeGrippa |
27 Replies
15546 Views |
November 01, 2012, 02:25:44 pm by Colas LeGrippa |
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Mitchell Pro 100 Schematics?
Started by balcorn80 |
8 Replies
6984 Views |
October 31, 2012, 06:16:41 pm by HotBluePlates |
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Valco tonemaster schem ?
Started by jerrydyer |
4 Replies
4022 Views |
October 30, 2012, 06:51:46 pm by HotBluePlates |
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Setting bias using amp head bias probe
Started by frank57 |
5 Replies
4119 Views |
October 30, 2012, 02:40:14 pm by stratele52 |
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7591 tubes
Started by ernie_jr |
10 Replies
15175 Views |
October 30, 2012, 01:45:47 pm by PRR |
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Trainwreck Express vs Marshall 1987 Plexi
Started by jojokeo |
34 Replies
20483 Views |
October 29, 2012, 07:30:43 pm by printer2 |
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Control Grid Reading On EL34.
Started by Gary_S |
30 Replies
13409 Views |
October 29, 2012, 02:46:01 pm by Gary_S |
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26 Replies
10759 Views |
October 29, 2012, 09:55:48 am by TubeGeek |
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Very Strange Problem
Started by dscottguitars |
11 Replies
3749 Views |
October 29, 2012, 12:55:49 am by PRR |
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Gibson Thor output impedance
Started by Tiny_Daddy |
3 Replies
2462 Views |
October 28, 2012, 12:00:57 pm by HotBluePlates |
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preamp tube testing chassis
Started by Quatro |
7 Replies
4808 Views |
October 28, 2012, 03:34:45 am by SoundmasterG |
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50/60 cycles - difference in tone?
Started by Quatro |
5 Replies
6544 Views |
October 28, 2012, 01:00:32 am by HotBluePlates |
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double decked layout boards ?
Started by tubenit |
7 Replies
3152 Views |
October 27, 2012, 05:59:05 am by SoundmasterG |
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6.3V lamp current
Started by spacelabstudio |
7 Replies
3436 Views |
October 26, 2012, 09:02:42 pm by tubeswell |
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filter caps question
Started by dude |
5 Replies
2341 Views |
October 26, 2012, 05:45:28 pm by dude |
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2x Speaker Cab switch
Started by moonbird |
3 Replies
2493 Views |
October 25, 2012, 08:29:50 pm by moonbird |
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Princeton Reverb Clone Preamp Bias
Started by plexi50 |
8 Replies
3795 Views |
October 25, 2012, 06:34:36 pm by HotBluePlates |
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Powercon
Started by spacelabstudio |
1 Replies
2012 Views |
October 25, 2012, 06:32:42 pm by HotBluePlates |
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