Tube Amp Archive

I think the tone of 3 gain stages is different to 2 regardless of voltage division via a pot.

I want to be able to have just the 2 gain stages for bold cleans

Can someone help me with a schematic to switch in or out the third gain stage.

I love the express tone I just want to chug out big clean chords aswell
Like a blonde bassman I made once.

Thank you
Davey

I have Changed dropper/decoupler string resistor (R26) from 18K to 10K
to raise the voltage of preamp tubes. I noticed this difference between a JTM45 and a 5F6-A circuit and tryed it on my express.

Happy birthday Ken
Thank you for what you created

Thank you for clearing that up Dana. Thank you so very much.

Would lowering the HT voltage without altering the power tube bias resistance induce cross over notch distortion?

2 x 47uf in series is only 23uF !!
I think thats to many ghosts in the room.

I need the 2 x 100uF to do this.

Ive just realized my mistake in my question

Thanks all

David

Hi All, Im working on an express and liverpool build. I was intending on 2 x 47uf 450V low Esr caps in parallel for the B+ 1. Apon finding this post and Glen's findings i have to make a decision on parallel or series. It seems like an improvement and "makes it better" doing series. I like the idea o...

Hi All, Im working on an express and liverpool build. I was intending on 2 x 47uf 450V low Esr caps in parallel for the B+ 1. Apon finding this post and Glen's findings i have to make a decision on parallel or series. It seems like an improvement and "makes it better" doing series. I like the idea o...

Hello There After redoing a marshall style amp-clone to an express with 465 plate volts to see what they are like and being overjoyed with the amp I am about to embark on a express and liverpool build. I have on hand and been using exclusively in past builds 20AWG solid core Silver coated Teflon hoo...