Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: rake on October 26, 2024, 11:41:40 pm

Title: 6V6 PP amp idea
Post by: rake 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!

Title: Re: 6V6 PP amp idea
Post by: tubenit 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

Title: Re: 6V6 PP amp idea
Post by: pdf64 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.

Title: Re: 6V6 PP amp idea
Post by: ac427v 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.

Title: Re: 6V6 PP amp idea
Post by: pdf64 on October 27, 2024, 08:39:41 am

The 5879 suppressor grid needs a DC connection, I think to its cathode is typical.