Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 04:44:08 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: 6G6-B build - planning stages  (Read 2076 times)

0 Members and 1 Guest are viewing this topic.

Offline Esquirefreak

  • Level 2
  • **
  • Posts: 390
  • I love Tube amps
Hoffman Amps Forum image
6G6-B build - planning stages
« on: August 30, 2023, 06:19:28 pm »
Hi!

I just noticed that Mojotone is offering a blonde Bassman chassis and faceplates, so I'm considering building one. I already have the most expensive parts on hand (transformers and a bassman cabinet).

I wanted to take the opportunity and plan ahead. So I have a couple of questions.

× Is it a good Idea to move the BASS channel supply node further down stream for noise suppression? Like after the 4k7 or 27k resistors and decreasing the original 56k resistor accordingly? It doesn't seem optimal to have a preamp supply node so close to the screen node.

× Is the original grounding system good enough or has anyone developed a better one? My initial plan was to use a bus wire. PA and preamp grounds as far away from each other as possible.

I'm gonna build the circuit stock and adjust if needed. I know that some minor tweaks can be done to make the BASS channel more guitar friendly.

Any advice, experience, do:s and don't:s is greatly appreciated.

/Max
« Last Edit: August 30, 2023, 07:01:21 pm by Esquirefreak »

Offline sluckey

  • Level 5
  • *******
  • Posts: 5075
    • Sluckey Amps
Hoffman Amps Forum image
Re: 6G6-B build - planning stages
« Reply #1 on: August 30, 2023, 08:06:28 pm »
Leo had a pretty good plan. I would stick to it if you really want a 6G6-B. If you want improvements just build one of the later Bassmans.
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