Welcome To the Hoffman Amplifiers Forum
October 22, 2025, 05:16:21 pm
Welcome To the Hoffman Amplifiers ForumOctober 22, 2025, 05:16:21 pm | ||
| Subject / Started by | Replies / Views | Last post  |
||
|---|---|---|---|---|
| 0 Members and 63 Guests are viewing this board. | ||||
|
|
27 Replies
5370 Views |
August 29, 2022, 03:35:25 pmby sluckey |
|
|
|
5U4GB vs. 5R4GA vs. SS rectifier?
Started by Lectroid |
12 Replies
5065 Views |
August 29, 2022, 01:02:19 pm by Lectroid |
|
|
|
2 Replies
1912 Views |
August 29, 2022, 12:10:24 pm by imgumby001 |
|
|
|
|
9 Replies
3647 Views |
August 29, 2022, 11:42:55 am by PRR |
|
|
|
|
12 Replies
3407 Views |
August 29, 2022, 11:17:23 am by zosobozo |
|
|
|
|
14 Replies
4629 Views |
August 29, 2022, 10:57:02 am by MikeW86 |
|
|
|
|
Grounding plan for OR120 clone
Started by focusbob |
2 Replies
2309 Views |
August 28, 2022, 11:43:27 pm by tubeswell |
|
|
|
1 Replies
1848 Views |
August 28, 2022, 03:19:23 pm by thetragichero |
|
|
|
|
82 JC120 - desperado
Started by fdesalvo |
3 Replies
1925 Views |
August 26, 2022, 12:13:47 pm by fdesalvo |
|
|
|
Voltage drop with power tubes installed
Started by Ledvedder |
8 Replies
3286 Views |
August 25, 2022, 10:53:36 am by Ledvedder |
|
|
|
1965 Marshall JTM 45 On Bench!!!
Started by plexi50 |
1 Replies
2144 Views |
August 25, 2022, 10:20:08 am by plexi50 |
|
|
|
Sunn Solarus
Started by plexi50 |
14 Replies
5227 Views |
August 25, 2022, 10:10:25 am by plexi50 |
|
|
|
Reverb Hum
Started by wsscott |
31 Replies
5742 Views |
August 25, 2022, 08:46:57 am by wsscott |
|
|
|
HRD ML212 "Clone" Build Reverb Issue
Started by W5FH |
7 Replies
2805 Views |
August 24, 2022, 11:45:11 am by thetragichero |
|
|
|
TungSol TS-272 Twin Triode
Started by W5FH |
0 Replies
1663 Views |
August 24, 2022, 08:59:41 am by W5FH |
|
|
|
RCA 12ax7 vs Electro Harmonix
Started by cometphoton |
6 Replies
3366 Views |
August 23, 2022, 08:08:00 pm by bmccowan |
|
|
|
A little PT help, if you please..
Started by mmrxcsr01 |
7 Replies
2717 Views |
August 23, 2022, 02:32:50 pm by thetragichero |
|
|
|
Tighten up some flub on a half-power AC30?
Started by Cirrus |
2 Replies
1906 Views |
August 23, 2022, 10:15:48 am by Cirrus |
|
|
|
DC heater supply
Started by joesatch |
4 Replies
2128 Views |
August 23, 2022, 02:12:47 am by kagliostro |
|
|
|
4 Replies
2081 Views |
August 23, 2022, 12:59:36 am by acatlow@gmail.com |
|
|
|
|
7 Replies
2704 Views |
August 22, 2022, 02:29:15 pm by PRR |
|
|
|
|
Sunn Grid Noise
Started by plexi50 |
10 Replies
2793 Views |
August 22, 2022, 08:06:20 am by plexi50 |
|
|
|
5881 vs 6L6GB
Started by imgumby001 |
7 Replies
2846 Views |
August 22, 2022, 05:46:56 am by HotBluePlates |
|
|
|
Twin Reverb II Biasing Question
Started by dpm309 |
7 Replies
3033 Views |
August 21, 2022, 03:45:12 pm by dpm309 |
|
|
|
4 Replies
2070 Views |
August 21, 2022, 12:15:31 pm by kagliostro |
|
|
|
|
Help with ID of this resistor
Started by Apexelectric |
10 Replies
3027 Views |
August 20, 2022, 06:46:59 pm by Apexelectric |
|
|
|
3 button footswitch with a TRS ?
Started by joesatch |
10 Replies
3257 Views |
August 20, 2022, 05:16:40 pm by Williamblake |
|
|
|
Gibson GA50 question
Started by Leevi |
3 Replies
2301 Views |
August 20, 2022, 07:41:37 am by pdf64 |
|
|
|
S#!t! - That's A Lot of Iron!
Started by DummyLoad |
3 Replies
2267 Views |
August 20, 2022, 04:34:56 am by zircontweezer |
|
|
|
10 Replies
4241 Views |
August 19, 2022, 09:22:57 pm by DummyLoad |
|
|
|
|
14 Replies
3391 Views |
August 19, 2022, 07:44:47 pm by Coldhand75 |
|
|
|
|
6JB6A in a guitar amp
Started by Hojvaelde |
7 Replies
3161 Views |
August 19, 2022, 04:03:55 pm by PRR |
|
|
|
Vibrochamp tremolo question
Started by Esquirefreak |
1 Replies
1781 Views |
August 18, 2022, 07:45:07 pm by tubeswell |
|
|
|
RC4558 OP Amp Voltage Max
Started by plexi50 |
11 Replies
3519 Views |
August 17, 2022, 09:41:50 pm by DummyLoad |
|
|
|
1974 Sunn Model A No Sound!
Started by plexi50 |
40 Replies
7198 Views |
August 17, 2022, 06:53:32 pm by PRR |
|
|
|
3 Replies
1994 Views |
August 17, 2022, 06:29:20 pm by PRR |
|
|
|
|
Sluckey's Trem-O-Nator in a Deluxe NR
Started by mk_716 |
1 Replies
1769 Views |
August 17, 2022, 02:00:57 pm by sluckey |
|
|
|
4 Replies
2405 Views |
August 17, 2022, 10:57:01 am by dude |
|
|
|
|
Preamp voltage and tone Question
Started by tubenit |
10 Replies
4052 Views |
August 16, 2022, 11:20:30 am by shooter |
|
|
|
twisting B+ leads
Started by joesatch |
4 Replies
2300 Views |
August 16, 2022, 10:07:38 am by tubeswell |
|
|
|
too much gain on Ef86 Vox Ac15
Started by rafaelctt |
22 Replies
5956 Views |
August 16, 2022, 01:39:53 am by rafaelctt |
|
|
|
Q re: mixing circuit for Marshall’s
Started by RobBozic |
12 Replies
3332 Views |
August 15, 2022, 11:45:32 pm by Ed_Chambley |
|
|
|
Reverb tank impedances
Started by isaac_teller |
3 Replies
2012 Views |
August 14, 2022, 12:05:01 am by isaac_teller |
|
|
|
A jillion things to ground and to where?
Started by MrBreeze |
9 Replies
2779 Views |
August 13, 2022, 08:08:31 am by EL34 |
|
|
|
Having Trouble With the Math!!
Started by imgumby001 |
8 Replies
2547 Views |
August 12, 2022, 06:13:30 pm by imgumby001 |
|
|
|
Ampeg Gemini 1 Tremelo Problem (AGAIN)
Started by plexi50 |
19 Replies
4775 Views |
August 12, 2022, 03:26:58 pm by plexi50 |
|
|
|
19 Replies
13694 Views |
August 12, 2022, 09:05:29 am by wsscott |
|
|
|
|
3 Replies
2070 Views |
August 12, 2022, 01:30:37 am by Esquirefreak |
|
|
|
|
Over Capacitance
Started by jaster55 |
9 Replies
2751 Views |
August 12, 2022, 01:25:04 am by jaster55 |
|
|
|
New amp start up trouble
Started by Bieworm |
46 Replies
7847 Views |
August 12, 2022, 12:32:00 am by Bieworm |
Normal Topic
Hot Topic (More than 25 replies)
Very Hot Topic (More than 50 replies)
Locked Topic
Sticky Topic
Poll
| Choose a link from the Hoffman Amplifiers parts catalog |
||
|
Mobile Device Catalog Link |
Yard Sale Discontinued |
Misc. Hardware |
| What's New |
Board Building Parts |
Amp trim Handles |
|
Lamps Diodes |
Hoffman Turret Boards |
Channel Switching |
| Resistors |
Fender Eyelet Boards |
Screws/Nuts Washers |
|
Jacks/Plugs Connectors |
Misc Eyelet Boards |
Tools |
| Capacitors |
Custom Boards |
Tubes Valves |
|
Pots Knobs |
Fuses/Cords |
Chassis |
|
Tube Sockets |
Switches |
Wire Cable |