Express Build Started

[jon]

Well after a long time I have taken the plunge and started my Express build. I started by shopping at Allyn's last night. When done I am going to contact my friend Nat (the owner of Francesca) and see if I can get a comparison.

[philmanatee]

Cool! I'm excited to hear about the comparison. I had a tech that played on one of the early express's tell me mine nailed the sound. You should have many late solder filled nights ahead of you! Phil

[jon]

I'm sure. I can't wait to get building.

[keithrick]

Good luck with your build!

[jon]

i'll keep you guys posted

[Ron]

I'm new to the site and have looked for a schematic of Francesca (was told there is one).

Can someone rub my nose in it, evidently I can't sniff it out?

Also, is there a list of voltage measurements for this particular amp?

[doctord02]

Actually, what you want is the Kelly schematic:

https://tubeamparchive.com/files/kelly90schemlayout.zip

Franchesca just confirmed that the Kelly schem was basically right. Make sure you get the latest correction of the bias circuit, it was the only error...

[Allynmey]

The only Layout that I know of is the fixed ceriatone one. Richie changed the values to match the Kelly '90 schematic which is the same as Francesca and correct. You can download the Francesca pics from the DL section and use them as a guide. Here's the layout:

Allynmey

[rockstah]

Richie changed the values to match the Kelly '90 schematic which is the same as Francesca and correct.

so the Kelly '90 and Francesca are the same amp?

[UR12]

Here is a link to the Kelly90 schematic that includes all fixes to make it exactly like Franchesca.

https://tubeamparchive.com/download/file.php?id=776

[Allynmey]

One more thing...The filter caps are 20uF and 40uF not 22 and 47uF.

Allynmey

[rockstah]

so in other words there is no correct schematic for Francesca? or did i miss something?

[UR12]

The schematic I posted above is the Franchesca Schematic. I took the Kelly 90 schematic and corrected all of the problems to make it exactly like Franchesca.

[rockstah]

Here is a link to the Kelly90 schematic that includes all fixes to make it exactly like Franchesca.

https://tubeamparchive.com/download/file.php?id=776

ill go by THIS schematic then! - build started!

[philmanatee]

Right on rockstah! Your gonna love the express. Phil