Welcome To the Hoffman Amplifiers Forum

September 05, 2025, 05:09:59 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Hoffman 5E1-5F1 Tweed Champ and 5F2A Princeton Turret Board  (Read 22969 times)

0 Members and 1 Guest are viewing this topic.

Offline EL34

  • Administrator
  • Level 5
  • **********
  • Posts: 10407
  • wooot!
    • Hoffman Amplifiers
The 5E1-5F1 Champ and 5F2A Princeton have the exact same board layout
So the 5F1 board can make either amp
The only difference is that the 5F2A princeton has a 1ma tone pot, a .0047 and a 500p tone cap, 1 more 22/50v cap and a 33/450v main filter cap instead of a 16/475v
The tone control parts are all on the front panel attached to the pots, so the board layout is the same as the 5F1

The layout Diagram, Schematic and BOMs for the 5F1 and the 5F2A can be found on the library page here
http://el34world.com/schematics.htm

I built a 5F1 board and took some pictures of the build here
http://el34world.com/Hoffman/5F1ChampBoard.htm

Layout and Schematic for the 5F1
http://el34world.com/Hoffman/files/Hoffman_5F1.pdf

5F1 BOM
http://el34world.com/Hoffman/files/Hoffman_5F1_BOM.pdf

Layout and Schematic for the 5F2A
http://el34world.com/Hoffman/files/Hoffman_5F2A.pdf

5F2A BOM
http://el34world.com/Hoffman/files/Hoffman_5F2A_BOM.pdf

Hoffman Board install instructions

Hoffman Turret Boards are on this page
http://hoffmanamps.com/MyStore/catalog/TurretBoard.htm

Hoffman amps Public parts list page is here
http://hoffmanamps.com/MyStore/catalog/PartsListIndex.htm
« Last Edit: July 13, 2015, 01:19:26 pm by EL34 »

Offline EL34

  • Administrator
  • Level 5
  • **********
  • Posts: 10407
  • wooot!
    • Hoffman Amplifiers
Hoffman Amps Forum image
Re: Hoffman 5E1-5F1 Tweed Champ and 5F2A Princeton Turret Board
« Reply #1 on: July 13, 2015, 01:19:53 pm »
I updated the Layout/Schematic and BOM files and uploaded new copies

 


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