Home  Resources  References  Tubes  Forums  Links  Support 
tubes
6/30/2009 11:22:52 PMjoe
Hello , Could anyone tell me if i can substitute a 6u5 in place of a 6g5.
Regards Joe.
7/1/2009 5:24:26 PMDoug Criner
Yes. Doug

:Hello , Could anyone tell me if i can substitute a 6u5 in place of a 6g5.
:Regards Joe.

7/1/2009 11:14:28 PMJoe
Thank you Doug. I will give it a go. Joe
7/2/2009 1:10:38 AMNorm Leal
Hi

Electrically 6U5 and 6G5 are the same. Only glass shape is different. 6U5 has straight sides. 6G5 is ST shaped. Later tubes may be dual marked 6U5/6G5 and have straight sides.

Norm

:Thank you Doug. I will give it a go. Joe

7/2/2009 11:20:21 PMDoug Criner
As Norm says, there is a difference in the geometry of the envelope. I'm thinking that the smaller 6U5 should fit where an original 6G5 was intended. At most, I'd expect a little nip or tuck in the tube holder would be the most required.
Doug

:
: Electrically 6U5 and 6G5 are the same. Only glass shape is different. 6U5 has straight sides. 6G5 is ST shaped. Later tubes may be dual marked 6U5/6G5 and have straight sides.
:
:Norm
:
::Thank you Doug. I will give it a go. Joe



© 1989-2025, Nostalgia Air