Welcome To the Hoffman Amplifiers Forum
April 25, 2026, 10:29:07 pm
Welcome To the Hoffman Amplifiers ForumApril 25, 2026, 10:29:07 pm | ||
| Subject / Started by | Replies / Views | Last post  |
||
|---|---|---|---|---|
| 0 Members and 33 Guests are viewing this board. | ||||
|
|
Harmony H303 Hum and Static
Started by scstill |
18 Replies
6206 Views |
July 31, 2022, 10:43:30 pmby PRR |
|
|
|
5Y3GT Filter capacitor
Started by dude |
13 Replies
6967 Views |
July 31, 2022, 09:03:35 pm by MrBreeze |
|
|
|
Univox U1000 repair/modification help
Started by Lucaswaggle |
19 Replies
8020 Views |
July 31, 2022, 02:38:26 pm by PRR |
|
|
|
Output transformer & choke location
Started by MrBreeze |
4 Replies
3677 Views |
July 31, 2022, 12:07:26 pm by dude |
|
|
|
EH-150/185 build complete
Started by Jerry garrcia |
1 Replies
2960 Views |
July 29, 2022, 07:36:24 pm by bmccowan |
|
|
37 Replies
9688 Views |
July 29, 2022, 10:18:58 am by Williamblake |
|
|
|
|
x
Started by fenderguy81 |
10 Replies
3832 Views |
July 27, 2022, 07:07:29 am by Latole |
|
|
|
Help with Supro 1960T
Started by Travis8 |
9 Replies
4081 Views |
July 27, 2022, 06:50:37 am by sluckey |
|
|
|
29 Replies
8482 Views |
July 26, 2022, 08:25:31 pm by Apexelectric |
|
|
|
|
6 Replies
4249 Views |
July 25, 2022, 10:44:21 pm by tubeswell |
|
|
|
|
7 Replies
4101 Views |
July 25, 2022, 12:48:23 pm by pdf64 |
|
|
|
|
Need reverb jack advice
Started by Lectroid |
11 Replies
5127 Views |
July 25, 2022, 11:19:32 am by Lectroid |
|
|
|
V1 triodes question
Started by joesatch |
8 Replies
4234 Views |
July 24, 2022, 09:47:24 pm by thetragichero |
|
|
|
PSA preamp tubes
Started by joesatch |
12 Replies
4337 Views |
July 24, 2022, 12:37:52 pm by pullshocks |
|
|
|
15 Replies
10559 Views |
July 24, 2022, 10:04:42 am by tmknight |
|
|
|
|
14 Replies
5602 Views |
July 23, 2022, 10:07:16 am by Platefire |
|
|
|
|
6g4 Super Clone (mostly done)
Started by owen |
46 Replies
13716 Views |
July 22, 2022, 12:28:40 pm by owen |
|
|
|
Simplify or remove tonestack?
Started by joesatch |
7 Replies
4038 Views |
July 22, 2022, 09:26:41 am by jordan86 |
|
|
|
Lamington Reverb… a little more volume?
Started by chris s |
16 Replies
6907 Views |
July 21, 2022, 09:04:55 pm by chris s |
|
|
|
HRD Preamp Plate Voltages - SOLVED
Started by bbmade |
7 Replies
3797 Views |
July 21, 2022, 12:05:48 pm by bbmade |
|
|
|
Use of relay on input?
Started by joesatch |
8 Replies
4347 Views |
July 21, 2022, 11:40:52 am by sluckey |
|
|
|
Troubleshooting noisy reverb
Started by winterturtle |
5 Replies
3436 Views |
July 21, 2022, 03:32:03 am by tubeswell |
|
|
|
preamp layout with triodes
Started by joesatch |
3 Replies
2700 Views |
July 20, 2022, 11:05:03 am by joesatch |
|
|
|
3 Replies
3223 Views |
July 20, 2022, 05:21:10 am by BlackCrowe604 |
|
|
|
|
Crate Stealth 50 power issue
Started by navdave |
6 Replies
4006 Views |
July 20, 2022, 12:28:31 am by navdave |
|
|
|
Rob Robinette's bias calculator
Started by dude |
14 Replies
7096 Views |
July 19, 2022, 09:03:35 pm by PRR |
|
|
|
Negative Feedback Causing Oscillation?
Started by AHeck |
19 Replies
8349 Views |
July 18, 2022, 07:16:19 am by AHeck |
|
|
|
Coupling caps 400v
Started by joesatch |
24 Replies
8097 Views |
July 17, 2022, 05:01:28 pm by sluckey |
|
|
|
Speaker for 5E3 Kit?
Started by bbmade |
11 Replies
5015 Views |
July 17, 2022, 04:18:44 am by JB |
|
|
|
18 Replies
6153 Views |
July 17, 2022, 02:41:57 am by kagliostro |
|
|
|
|
Examples of high voltage relay
Started by CascoSieg |
5 Replies
3682 Views |
July 16, 2022, 08:03:38 pm by DummyLoad |
|
|
|
Dual 50 Amp
Started by Big_Mike |
6 Replies
4474 Views |
July 16, 2022, 05:16:11 pm by Apexelectric |
|
|
|
Supro 1688TN Power Section
Started by Vez |
12 Replies
5033 Views |
July 15, 2022, 08:17:38 pm by bmccowan |
|
|
|
IEC connector location
Started by MrBreeze |
4 Replies
3600 Views |
July 15, 2022, 01:29:37 pm by MrBreeze |
|
|
|
Chassis Material preferences
Started by MrBreeze |
11 Replies
4833 Views |
July 15, 2022, 07:13:17 am by sluckey |
|
|
|
29 Replies
8974 Views |
July 14, 2022, 03:54:58 pm by HotBluePlates |
|
|
|
|
Electronics theory question
Started by nandrewjackson |
9 Replies
5376 Views |
July 14, 2022, 04:09:28 am by shooter |
|
|
59 Replies
22380 Views |
July 13, 2022, 05:59:25 pm by cspar |
|
|
|
|
preamp cathodes to ground location
Started by joesatch |
3 Replies
3563 Views |
July 13, 2022, 04:45:49 pm by tubeswell |
|
|
|
Average Screen Current
Started by HotBluePlates |
17 Replies
9920 Views |
July 13, 2022, 08:53:34 am by DuaneOh |
|
|
|
Where to insert Standby Switch?
Started by winterturtle |
4 Replies
4397 Views |
July 12, 2022, 04:34:31 pm by winterturtle |
|
|
|
31 Replies
9587 Views |
July 12, 2022, 07:04:44 am by winterturtle |
|
|
|
|
Eliminating RobRob's Hum balance ckt.
Started by JustMike |
1 Replies
3060 Views |
July 11, 2022, 07:46:46 pm by sluckey |
|
|
|
8 Replies
5549 Views |
July 11, 2022, 02:45:18 pm by HotBluePlates |
|
|
|
|
1965 Kay 703C - OT replacement questions
Started by Carlsoti |
6 Replies
4018 Views |
July 11, 2022, 11:34:59 am by PRR |
|
|
|
Schematic question
Started by Vil |
7 Replies
4027 Views |
July 11, 2022, 09:45:18 am by sluckey |
|
|
|
Sluckey matchless board
Started by ok_state_blues |
4 Replies
3818 Views |
July 10, 2022, 05:03:30 pm by ok_state_blues |
|
|
|
Blackstar HT-20R
Started by EL34 |
8 Replies
5597 Views |
July 10, 2022, 12:35:50 pm by rake |
|
|
|
Gibson GA-5 build - good till 9.5
Started by Keyboy |
5 Replies
4781 Views |
July 10, 2022, 06:04:35 am by ShoemanGB |
|
|
|
3 Replies
3767 Views |
July 09, 2022, 11:19:23 am by sluckey |
|
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 |