Welcome To the Hoffman Amplifiers Forum

September 08, 2025, 09:03:09 am
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Rotary, 1 Pole, 3 Position Wiring help for speaker load  (Read 1790 times)

0 Members and 1 Guest are viewing this topic.

Offline KimboDb

  • Level 1
  • *
  • Posts: 34
  • I love Tube amps
Hoffman Amps Forum image
Rotary, 1 Pole, 3 Position Wiring help for speaker load
« on: September 29, 2017, 04:12:30 pm »
can some one help with the wiring on the switch. i know were i would put the 2,4,8 ohm wires. Just making sure that i don't have to use the ground lug since that will be on the output jack itself. also, do i have to place the negative feedback wire on the output jack with the output wire like usual or would that goto the ground lug on the rotary switch? Thanks ahead of time.

Offline sluckey

  • Level 5
  • *******
  • Posts: 5075
    • Sluckey Amps
Hoffman Amps Forum image
Re: Rotary, 1 Pole, 3 Position Wiring help for speaker load
« Reply #1 on: September 29, 2017, 07:58:39 pm »
There is no ground lug. There should only be four lugs on that switch. You know what to do with three of them. The fourth lug is the switch wiper. It will connect to the hot lug on your speaker jack.

The negative feedback wire connects to the 2, 4, or 8 ohm lug, whichever is appropriate.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

 


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


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program


password