Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 01:48:57 pm
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: 6V6 PP amp idea  (Read 2015 times)

0 Members and 1 Guest are viewing this topic.

Offline rake

  • Level 2
  • **
  • Posts: 301
  • I love Tube amps
Hoffman Amps Forum image
6V6 PP amp idea
« on: October 26, 2024, 11:41:40 pm »
Guys After the input from my last schematic I tried to get closer to what I'm looking for.
I went over it multible times looking for errors but who knows??? LOL!
Any and all guidence is greatly accepted and appreciated! Thanks in advance!

Solid state has no soul........

Offline tubenit

  • Global Moderator
  • Level 5
  • ******
  • Posts: 10274
  • Life is a daring adventure or nothing at all!
Hoffman Amps Forum image
Re: 6V6 PP amp idea
« Reply #1 on: October 27, 2024, 06:05:37 am »
Just suggestions to consider.

I think you're gonna need more like a 1M reverb pot if you have a lower value "mixing" resistor of 150k. 

Treble cap in tone stack is 250p not  .250p.

Overall not saying you "should" change what you've done, I'm simply offering how I would approach your idea.

With respect, Tubenit
« Last Edit: October 27, 2024, 06:09:16 am by tubenit »

Offline pdf64

  • Level 4
  • *****
  • Posts: 2965
Hoffman Amps Forum image
Re: 6V6 PP amp idea
« Reply #2 on: October 27, 2024, 06:35:25 am »
Are the mains connectors in your region unpolarised?
If they are polarised, it's best to wire both the fuse and switch in the live feed.
If unpolarised, a double pole switch for both live and neutral, whichever way around they happen to be, is usually mandated.
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him! BBC News feature  https://www.bbc.co.uk/news/articles/cm26llp

Offline ac427v

  • Level 2
  • **
  • Posts: 347
  • I love tube amps
Hoffman Amps Forum image
Re: 6V6 PP amp idea
« Reply #3 on: October 27, 2024, 07:32:53 am »
Nicely drawn schematic!
Two thoughts.
I don't understand the function/effectiveness of the channel switching. What do you want the switch to do?
The Volume Pot location essentially duplicates the two gain pots. They vary the output of V1. I would enjoy hearing what effect you are seeking to offer alternative placements.
I have not used a 5879. I wonder if it might be better placed earlier in the circuit so it could have it's own volume pot.

Offline pdf64

  • Level 4
  • *****
  • Posts: 2965
Hoffman Amps Forum image
Re: 6V6 PP amp idea
« Reply #4 on: October 27, 2024, 08:39:41 am »
The 5879 suppressor grid needs a DC connection, I think to its cathode is typical.
https://www.justgiving.com/page/5-in-5-for-charlie This is my step son and his family. He is running 5 marathons in 5 days to support the research into STXBP1, the genetic condition my grandson Charlie has. Please consider supporting him! BBC News feature  https://www.bbc.co.uk/news/articles/cm26llp

 


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