Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 04:33:13 pm
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 04:33:13 pm | ||
| Subject / Started by | Replies / Views | Last post  |
||
|---|---|---|---|---|
| 0 Members and 1 Guest are viewing this board. | ||||
|
|
5E7 low volume... numbers posted...
Started by Geezer |
0 Replies
3498 Views |
June 17, 2005, 09:36:20 pmby Geezer |
|
|
|
0 Replies
2965 Views |
June 17, 2005, 09:35:51 pm by Geezer |
|
|
|
|
8 pin tube socket adapter ?
Started by Geezer |
0 Replies
3180 Views |
June 17, 2005, 09:35:25 pm by Geezer |
|
|
|
DC stand off heaters?
Started by Geezer |
0 Replies
3313 Views |
June 17, 2005, 09:34:55 pm by Geezer |
|
|
|
Fender Deluxe P/T Wiring
Started by Geezer |
0 Replies
3033 Views |
June 17, 2005, 09:34:28 pm by Geezer |
|
|
|
Add Effects loop to Doug's AB763 board
Started by Geezer |
0 Replies
3882 Views |
June 17, 2005, 09:34:04 pm by Geezer |
|
|
|
What is the purpose of a cathode follower?
Started by Geezer |
0 Replies
4299 Views |
June 17, 2005, 09:33:38 pm by Geezer |
|
|
|
Aluminum Chassis
Started by Geezer |
0 Replies
4712 Views |
June 17, 2005, 09:33:14 pm by Geezer |
|
|
|
help please
Started by Geezer |
0 Replies
3098 Views |
June 17, 2005, 09:32:52 pm by Geezer |
|
|
|
speaker magnet - power tube distance
Started by Geezer |
0 Replies
3084 Views |
June 17, 2005, 09:32:21 pm by Geezer |
|
|
|
speaker impedances affecting tone?
Started by Geezer |
0 Replies
3046 Views |
June 17, 2005, 09:31:45 pm by Geezer |
|
|
|
BF Showman 6v6's conversion?
Started by Geezer |
0 Replies
3797 Views |
June 17, 2005, 09:31:12 pm by Geezer |
|
|
|
can't get the bias negative enough
Started by Geezer |
0 Replies
3201 Views |
June 17, 2005, 09:30:34 pm by Geezer |
|
|
|
Ken: WHY must the heater be this way?
Started by Geezer |
0 Replies
3018 Views |
June 17, 2005, 09:30:09 pm by Geezer |
|
|
|
Extension speaker jack wiring
Started by Geezer |
0 Replies
3648 Views |
June 17, 2005, 09:29:34 pm by Geezer |
|
|
|
Microphonic output tubes?
Started by Geezer |
0 Replies
3067 Views |
June 17, 2005, 09:29:07 pm by Geezer |
|
|
|
Blonde Bassman Power Sag.
Started by Geezer |
0 Replies
3592 Views |
June 17, 2005, 09:28:34 pm by Geezer |
|
|
|
Power transformer interference
Started by Geezer |
0 Replies
3410 Views |
June 17, 2005, 09:28:07 pm by Geezer |
|
|
|
PI questions.....
Started by Geezer |
0 Replies
2948 Views |
June 17, 2005, 09:27:43 pm by Geezer |
|
|
|
0 Replies
3154 Views |
June 17, 2005, 09:27:15 pm by Geezer |
|
|
|
|
Heater max voltage
Started by Geezer |
0 Replies
3139 Views |
June 17, 2005, 09:26:52 pm by Geezer |
|
|
|
0 Replies
3102 Views |
June 17, 2005, 09:26:26 pm by Geezer |
|
|
|
|
Groove Tube Substitube?
Started by Geezer |
0 Replies
3479 Views |
June 17, 2005, 09:26:00 pm by Geezer |
|
|
|
About preamp gain
Started by Geezer |
0 Replies
3185 Views |
June 17, 2005, 09:25:33 pm by Geezer |
|
|
|
hum resolved
Started by Geezer |
0 Replies
3814 Views |
June 17, 2005, 09:25:07 pm by Geezer |
|
|
|
old orange drops
Started by Geezer |
0 Replies
3126 Views |
June 17, 2005, 09:24:38 pm by Geezer |
|
|
|
Pin voltages for 100 watt Plexi &nbs
Started by Geezer |
0 Replies
4684 Views |
June 17, 2005, 09:24:13 pm by Geezer |
|
|
|
OT that Doug used to sell
Started by Geezer |
0 Replies
3180 Views |
June 17, 2005, 09:23:44 pm by Geezer |
|
|
|
Inconsistent/ up and down B+
Started by Geezer |
0 Replies
3428 Views |
June 17, 2005, 09:23:21 pm by Geezer |
|
|
|
0 Replies
3454 Views |
June 17, 2005, 09:22:53 pm by Geezer |
|
|
|
|
Master volume in a Princeton aa964
Started by Geezer |
0 Replies
4644 Views |
June 17, 2005, 09:22:27 pm by Geezer |
|
|
|
oscillation/snubbers&PI
Started by Geezer |
0 Replies
3348 Views |
June 17, 2005, 09:21:50 pm by Geezer |
|
|
|
Output Transformer 1750 ohms
Started by Geezer |
0 Replies
3243 Views |
June 17, 2005, 09:21:24 pm by Geezer |
|
|
|
regulated DC heater circuit
Started by Geezer |
0 Replies
3639 Views |
June 17, 2005, 09:20:53 pm by Geezer |
|
|
|
The need for Heat
Started by Geezer |
0 Replies
3053 Views |
June 17, 2005, 09:20:26 pm by Geezer |
|
|
|
Preffered Bias Method
Started by Geezer |
0 Replies
3580 Views |
June 17, 2005, 09:20:02 pm by Geezer |
|
|
|
Bassman 6L6 to EL34 conversion...
Started by Geezer |
0 Replies
6811 Views |
June 17, 2005, 09:19:36 pm by Geezer |
|
|
|
5E3 Hum and transformer mounting
Started by Geezer |
0 Replies
4061 Views |
June 17, 2005, 09:18:56 pm by Geezer |
|
|
|
0 Replies
3847 Views |
June 17, 2005, 09:18:21 pm by Geezer |
|
|
|
|
Revibe Tank Impedance Tweak?
Started by Geezer |
0 Replies
3169 Views |
June 17, 2005, 09:17:55 pm by Geezer |
|
|
|
Checking a cap can/anyone use the JJ?
Started by Geezer |
0 Replies
3978 Views |
June 17, 2005, 09:17:24 pm by Geezer |
|
|
|
0 Replies
3273 Views |
June 17, 2005, 09:17:01 pm by Geezer |
|
|
|
|
tube question
Started by Geezer |
0 Replies
3177 Views |
June 17, 2005, 09:16:34 pm by Geezer |
|
|
|
Output transformer troubleshooting
Started by Geezer |
0 Replies
5219 Views |
June 17, 2005, 09:16:09 pm by Geezer |
|
|
|
5E8A vs. 5F6A
Started by Geezer |
0 Replies
5893 Views |
June 17, 2005, 09:15:40 pm by Geezer |
|
|
|
Home Brew Fender PS 400
Started by Geezer |
0 Replies
5107 Views |
June 17, 2005, 09:15:16 pm by Geezer |
|
|
|
Fender Bassman 100 chassis layout
Started by Geezer |
0 Replies
5615 Views |
June 17, 2005, 09:14:47 pm by Geezer |
|
|
|
0 Replies
3339 Views |
June 17, 2005, 09:14:18 pm by Geezer |
|
|
|
|
What causes hum ?
Started by Geezer |
0 Replies
3532 Views |
June 17, 2005, 09:13:42 pm by Geezer |
|
|
|
grid stoppers?
Started by Geezer |
0 Replies
3492 Views |
June 17, 2005, 09:13:10 pm by Geezer |
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 |