Welcome To the Hoffman Amplifiers Forum
September 06, 2025, 06:39:02 am
Welcome To the Hoffman Amplifiers ForumSeptember 06, 2025, 06:39:02 am | ||
| Subject / Started by | Replies / Views | Last post  |
||
|---|---|---|---|---|
| ac427v and 26 Guests are viewing this board. | ||||
|
|
5R4 rectifiers
Started by Brownie |
9 Replies
3183 Views |
March 10, 2023, 05:49:33 pmby tubeswell |
|
|
|
JTM45 bias
Started by g-man |
2 Replies
2231 Views |
March 10, 2023, 01:32:25 pm by g-man |
|
|
|
6 Replies
4054 Views |
March 09, 2023, 07:38:06 pm by AlNewman |
|
|
|
|
Gibson Atlas amp head -- poor tone
Started by Coldhand75 |
9 Replies
2913 Views |
March 09, 2023, 11:16:48 am by bmccowan |
|
|
|
Davis 106 Amps
Started by plexi50 |
7 Replies
6204 Views |
March 08, 2023, 10:07:50 am by Lectroid |
|
|
|
MojoTone Studio One Watt
Started by GAStan |
10 Replies
3817 Views |
March 08, 2023, 09:17:34 am by GAStan |
|
|
|
18 Replies
4031 Views |
March 08, 2023, 06:56:11 am by shooter |
|
|
|
|
3 Replies
2455 Views |
March 07, 2023, 11:10:19 pm by PRR |
|
|
|
|
Low vac on filaments
Started by dude |
3 Replies
1793 Views |
March 07, 2023, 08:07:10 pm by dude |
|
|
|
How to measure bias in a Blues Jr?
Started by JustMike |
12 Replies
5206 Views |
March 07, 2023, 06:04:44 pm by AlNewman |
|
|
|
EF86 GAIN FACTOR
Started by Jonas |
10 Replies
4384 Views |
March 06, 2023, 07:04:10 pm by HotBluePlates |
|
|
|
AB763 brass plate?
Started by joesatch |
12 Replies
3998 Views |
March 06, 2023, 05:51:19 pm by pdf64 |
|
|
|
0 Replies
2314 Views |
March 06, 2023, 03:29:45 pm by astronomicum |
|
|
|
|
A mod for a '65 Vox AC-10
Started by miserlou |
12 Replies
3748 Views |
March 06, 2023, 12:00:50 pm by Jalmeida |
|
|
|
Magnatone 280 on the Bench
Started by JustMike |
12 Replies
3334 Views |
March 06, 2023, 11:10:48 am by JustMike |
|
|
|
1964 Super Reverb NFB rotary switch
Started by Darkpr0 |
10 Replies
3070 Views |
March 05, 2023, 02:25:51 pm by Darkpr0 |
|
|
|
Screen voltage higher than plate voltage?
Started by dude |
14 Replies
3798 Views |
March 04, 2023, 08:39:31 pm by HotBluePlates |
|
|
|
0 Replies
2053 Views |
March 04, 2023, 05:29:59 pm by astronomicum |
|
|
|
|
Tweaking voltage dividers
Started by TenderTendon |
1 Replies
1585 Views |
March 03, 2023, 09:48:06 pm by sluckey |
|
|
|
1974 Twin Reverb Transformer
Started by TenderTendon |
4 Replies
1729 Views |
March 03, 2023, 04:28:12 pm by TenderTendon |
|
|
|
Fender Twin 135w - 120hz hum
Started by Garrett335 |
6 Replies
2425 Views |
March 03, 2023, 02:54:33 pm by sluckey |
|
|
|
Start-up Surge
Started by shaun |
24 Replies
4627 Views |
March 03, 2023, 10:21:41 am by acheld |
|
|
|
12 Replies
7855 Views |
March 03, 2023, 06:53:40 am by bmccowan |
|
|
|
|
18 Replies
4281 Views |
March 02, 2023, 08:04:08 pm by dude |
|
|
|
|
Rogers/Majestic 6R531
Started by AlNewman |
24 Replies
4363 Views |
March 02, 2023, 07:10:53 pm by AlNewman |
|
|
|
Noisey tubes
Started by pbman1953 |
7 Replies
2394 Views |
March 02, 2023, 05:41:39 pm by scstill |
|
|
|
Pentode - triode switch 6V6
Started by tubenit |
1 Replies
1774 Views |
March 02, 2023, 07:06:54 am by sluckey |
|
|
|
A Basic Bias Question
Started by Lectroid |
18 Replies
3666 Views |
March 01, 2023, 10:20:25 am by Lectroid |
|
|
|
2 Replies
1744 Views |
February 28, 2023, 05:23:55 pm by Jennings |
|
|
|
|
Heater Winding/Center Tap Question
Started by davidb |
3 Replies
2083 Views |
February 28, 2023, 03:06:57 pm by HotBluePlates |
|
|
|
How to get 12v to my 12ax7?
Started by jordan86 |
6 Replies
2927 Views |
February 28, 2023, 02:15:46 pm by PRR |
|
|
|
18 Replies
3851 Views |
February 28, 2023, 08:47:48 am by sluckey |
|
|
|
|
5 Replies
2001 Views |
February 27, 2023, 08:05:19 pm by Lectroid |
|
|
|
|
Fuse help identification needed
Started by joesatch |
9 Replies
2738 Views |
February 27, 2023, 03:00:39 pm by joesatch |
|
|
|
Sluckey "Trem-O-Nator Vactrol Question
Started by W5FH |
3 Replies
1875 Views |
February 27, 2023, 01:24:26 pm by sluckey |
|
|
|
Simulating preamp questions
Started by fossilshark |
5 Replies
2088 Views |
February 26, 2023, 09:47:38 pm by fossilshark |
|
|
|
5 Replies
2343 Views |
February 26, 2023, 06:59:07 pm by RadioComm |
|
|
|
|
Minnesota auction
Started by bmccowan |
0 Replies
1490 Views |
February 26, 2023, 05:26:17 pm by bmccowan |
|
|
26 Replies
7024 Views |
February 26, 2023, 01:35:14 pm by PRR |
|
|
|
|
relay assistance
Started by joesatch |
24 Replies
4028 Views |
February 26, 2023, 10:12:52 am by acheld |
|
|
74 Replies
11399 Views |
February 25, 2023, 09:49:45 pm by Blooze |
|
|
|
|
12at7 tube selection
Started by pbman1953 |
7 Replies
2183 Views |
February 25, 2023, 05:54:58 pm by HotBluePlates |
|
|
|
Schematic Finalization
Started by fossilshark |
38 Replies
6356 Views |
February 25, 2023, 11:35:01 am by fossilshark |
|
|
|
3 Replies
1552 Views |
February 25, 2023, 10:16:59 am by sluckey |
|
|
|
|
3×10 cab question(s)
Started by Esquirefreak |
2 Replies
1546 Views |
February 25, 2023, 08:25:16 am by HotBluePlates |
|
|
|
Sound City 40C
Started by Apprentice |
0 Replies
1331 Views |
February 25, 2023, 07:01:04 am by Apprentice |
|
|
|
7 Replies
2199 Views |
February 23, 2023, 06:50:50 pm by Jalmeida |
|
|
|
|
8 Replies
2256 Views |
February 22, 2023, 06:31:19 pm by HotBluePlates |
|
|
|
|
Hammond Haul, need some ideas
Started by Rontone |
10 Replies
3139 Views |
February 22, 2023, 04:08:22 pm by Rontone |
|
|
|
Cathodyne vs. LTP question
Started by Lectroid |
10 Replies
3892 Views |
February 22, 2023, 03:30:29 pm by Lectroid |
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 |