Hello,
There seems to be a controversy brewing on what were the original tube
compliments on the Western Electric 91a/91b .Anyone know the true tube
compliment, to help put an end to this.

Thanks,Machi

Machi yakko wrote:

Hello,
There seems to be a controversy brewing on what were the original tube
compliments on the Western Electric 91a/91b .Anyone know the true tube
compliment, to help put an end to this.

Thanks,Machi


As I understand it there were two 310As, a 300B and a 274B (might have
been a 274A).

Raymond

François Yves Le Gal wrote:

snip

WE 91A : V1, V2 6C6; V3 300B, V4 274A

According to the original schematics :
http://www.audiosharing.com/archive/...df/No.91-A.pdf

WE 91B : V1, V2 310A, V3 300B, V4 274B

snip


I guess the WE schematic is as authoritative as you can get.

Machi,

The 91A was featured in one of the early Glass Audio magazines. I would look
there.

Carroll

"Machi yakko" wrote in message
...
Hello,
There seems to be a controversy brewing on what were the original tube
compliments on the Western Electric 91a/91b .Anyone know the true tube
compliment, to help put an end to this.

Thanks,Machi