Testing 6SC7 tubes with a Jackson 648

[tube-a-lou]

Hi all,
I'm trying to test a few 6SC7 tubes in my Jackson 648
tube tester but it's not listed, does anyone have the settings
for this.

Thank's and Happy New Year!

 

[arts]

I'm guessing the 648 uses the same data as my 648S?

6.3 A238 A14 40WX
6.3 A238 A56 40WX

 

[tube-a-lou]

Hi,
Is there a b setting?

 

[Dswankey]

Here's the roll chart for the 648s

http://akdatabase.org/AKview/albums/userpics/10004/Jackson 648 data 2 of 2.pdf

See post # 2

https://www.antiqueradios.com/forums/viewtopic.php?f=8&t=193971

Guessing here but the 2nd line would be the B setting?

 

[tube-a-lou]

Big Thanks, for that!

 

[tube-a-lou]

This is great I tested three tubes and so far there good!

Thank You

 

[knockbill]

Hi Lou,,, I rarely find 6SC7s to test bad,,, but a lot are microphonic in use... I grab em cheap at hamfests when I see them...

 

[tube-a-lou]

Hi Lou,,, I rarely find 6SC7s to test bad,,, but a lot are microphonic in use... I grab em cheap at hamfests when I see them...

I have a 1953 Fender Deluxe and it uses those tubes, some are good some are just okay.

 

[knockbill]

Yep,, that's what I find with them also... I actually built a 5C3 Deluxe clone,,, really a nice sounding amp!!!