Welcome To the Hoffman Amplifiers Forum
December 08, 2025, 12:21:39 pm
Welcome To the Hoffman Amplifiers ForumDecember 08, 2025, 12:21:39 pm | ||
| Subject / Started by | Replies / Views | Last post  |
||
|---|---|---|---|---|
| 0 Members and 59 Guests are viewing this board. | ||||
|
|
Non polarized cap in bias circuit
Started by Stuff4bikes |
1 Replies
1862 Views |
March 05, 2022, 07:16:34 pmby sluckey |
|
|
|
hammond 125J question
Started by jackplug1 |
6 Replies
3240 Views |
March 05, 2022, 08:05:34 am by jackplug1 |
|
|
|
Slow tremolo mod
Started by valvetones |
8 Replies
3884 Views |
March 05, 2022, 06:55:44 am by sluckey |
|
|
|
5 Replies
2783 Views |
March 04, 2022, 09:57:38 pm by texwest |
|
|
|
|
Wem Westminster MK9 schematic question
Started by Wonder2121 |
5 Replies
3355 Views |
March 04, 2022, 03:22:10 pm by pdf64 |
|
|
|
3 Replies
2360 Views |
March 04, 2022, 10:09:12 am by mresistor |
|
|
|
|
1 Replies
1962 Views |
March 04, 2022, 10:00:25 am by sluckey |
|
|
|
1966 Fender Bassman 100% Original
Started by jamaio |
28 Replies
7427 Views |
March 03, 2022, 09:08:50 pm by jamaio |
|
|
|
Convert schematic to layout
Started by ok_state_blues |
6 Replies
3277 Views |
March 02, 2022, 01:55:59 pm by ok_state_blues |
|
|
|
News Update Valve Supplies
Started by Latole |
1 Replies
2000 Views |
March 02, 2022, 06:25:24 am by Leevi |
|
|
|
7 Replies
2688 Views |
March 01, 2022, 11:28:19 pm by bmccowan |
|
|
|
|
7 Replies
4552 Views |
March 01, 2022, 07:37:23 pm by AmberB |
|
|
|
63 Replies
9943 Views |
March 01, 2022, 01:56:40 pm by RadioComm |
|
|
|
|
EF86 Vibroverb
Started by valvetones |
9 Replies
2877 Views |
March 01, 2022, 01:43:14 pm by valvetones |
|
|
|
1 ohm cathode resistor
Started by AmberB |
42 Replies
10360 Views |
March 01, 2022, 11:00:37 am by pdf64 |
|
|
|
AC15 Volume Issues
Started by ebulakowski |
13 Replies
3847 Views |
March 01, 2022, 10:59:50 am by valvetones |
|
|
|
Out of spec transformers and testing
Started by liddokun |
18 Replies
4997 Views |
February 28, 2022, 09:31:25 pm by liddokun |
|
|
|
24 Replies
5584 Views |
February 28, 2022, 05:13:14 pm by 72Blazer |
|
|
|
|
LM master volume question
Started by Esquirefreak |
5 Replies
2688 Views |
February 28, 2022, 03:31:17 pm by Esquirefreak |
|
|
|
Princeton 5F2-A Clone TONE Pot values
Started by Bigjoedo |
5 Replies
3592 Views |
February 28, 2022, 05:13:11 am by Bigjoedo |
|
|
|
UberGain PowerSupply
Started by MiniVanMan |
3 Replies
2541 Views |
February 27, 2022, 09:38:34 pm by PRR |
|
|
|
Stout Reverb Build / No Audio - Fixed
Started by jamaio |
8 Replies
4668 Views |
February 27, 2022, 06:54:50 pm by tubenit |
|
|
|
Measuring the primary of an OT
Started by pbman1953 |
11 Replies
4156 Views |
February 27, 2022, 07:14:31 am by pbman1953 |
|
|
|
12 Replies
3782 Views |
February 26, 2022, 07:43:33 pm by sluckey |
|
|
|
|
Japanese Switches
Started by jy67 |
1 Replies
2138 Views |
February 26, 2022, 02:06:54 pm by mresistor |
|
|
|
30 Replies
10796 Views |
February 26, 2022, 10:52:53 am by sluckey |
|
|
|
|
5 Replies
3084 Views |
February 25, 2022, 06:53:43 pm by trobbins |
|
|
|
|
Blues junior plate voltage issue
Started by Colas LeGrippa |
35 Replies
7393 Views |
February 25, 2022, 01:28:31 pm by Colas LeGrippa |
|
|
|
Shock mount for EF86...any advice?
Started by PharmRock |
11 Replies
4355 Views |
February 25, 2022, 12:12:46 am by kagliostro |
|
|
|
Single Channel AB763 w/VB Tremolo
Started by Blind Lemon |
23 Replies
5170 Views |
February 24, 2022, 05:20:47 pm by Blind Lemon |
|
|
|
SF Princeton (NR) Trem Mod Question
Started by plumcrazyfx |
4 Replies
2247 Views |
February 24, 2022, 03:42:43 pm by plumcrazyfx |
|
|
|
Need help with 1966 Kay model 720
Started by smackoj |
10 Replies
3867 Views |
February 24, 2022, 09:51:20 am by smackoj |
|
|
|
Mini-Bassman question
Started by bmccowan |
7 Replies
2589 Views |
February 23, 2022, 07:10:50 pm by bmccowan |
|
|
|
Show us your breadboard!
Started by uki |
10 Replies
4279 Views |
February 23, 2022, 07:01:00 am by uki |
|
|
|
6 Replies
2831 Views |
February 23, 2022, 03:01:28 am by Latole |
|
|
|
|
Merit A2904 OT help
Started by munkeyboy |
9 Replies
4291 Views |
February 22, 2022, 05:24:51 pm by frankenxtein |
|
|
|
9 Replies
3193 Views |
February 22, 2022, 04:50:56 pm by Colas LeGrippa |
|
|
|
|
2 Replies
2040 Views |
February 22, 2022, 09:46:21 am by acheld |
|
|
|
|
pot value question
Started by pbman1953 |
49 Replies
8856 Views |
February 22, 2022, 06:25:02 am by pbman1953 |
|
|
|
Bias setting for 5F6A
Started by Johnnydoright |
10 Replies
3356 Views |
February 22, 2022, 12:33:49 am by PRR |
|
|
|
Vactrol Questions
Started by skeprico |
3 Replies
2293 Views |
February 21, 2022, 05:34:15 pm by skeprico |
|
|
|
Dumont tube brand ??
Started by kagliostro |
22 Replies
7628 Views |
February 21, 2022, 01:33:12 pm by sluckey |
|
|
|
38 Replies
9180 Views |
February 21, 2022, 12:38:21 pm by PRR |
|
|
|
|
7 Replies
2938 Views |
February 20, 2022, 06:48:34 pm by Hoodnight |
|
|
|
|
4 Replies
3030 Views |
February 20, 2022, 05:44:01 pm by timmyjoe |
|
|
|
|
1958 Fender Basman Restoration
Started by Garrett335 |
12 Replies
4589 Views |
February 20, 2022, 03:00:36 pm by PRR |
|
|
|
EL-34 screen grid resistors
Started by AmberB |
5 Replies
4553 Views |
February 20, 2022, 02:43:27 pm by HotBluePlates |
|
|
|
55 Replies
10535 Views |
February 20, 2022, 02:36:09 pm by Latole |
|
|
|
|
14 Replies
4478 Views |
February 20, 2022, 11:17:10 am by Erik Aa |
|
|
|
|
Randall LB103 ; need schematic
Started by Latole |
25 Replies
5684 Views |
February 20, 2022, 10:09:42 am by Latole |
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 |