[sdiy] Space Expander 7247 substitute

[The Peasant]

Hi Anthony,

It looks like the 12AX7 is an almost exact replacement, the 12AT7 and 12AU7 are 
both lower mu (gain) tubes.

Take care,
Doug
______________________
The Electronic Peasant

www.electronicpeasant.com


Quoting anthony <aankrom at bluemarble.net>:

> I was wondering if anyone would have any good ideas about what might work in
> place of the 7247 in a Fisher Space Expander reverb amp. I have several
> 12AX7's and 12AU7's and some 12AT7's. I thought I'd start with the AU and
> then the AT.
> I doubt the AX would work as well and I've heard of people replacing them in
> some guitar amps with AU's to get a more
> mellow tone. That seems like a good analogy.
> I have a bunch of other twin triodes liek 6BQ7's etc. too.