Bottlehead Forum

Bottlehead Kits => Stereomour II => Topic started by: Deke609 on April 28, 2019, 06:40:53 PM

Title: SII with output tubes other than 2A3 or 45?
Post by: Deke609 on April 28, 2019, 06:40:53 PM

I just came across this tantalizing remark from PJ from a couple of years back:

Quote

Incidentally, I originally designed it to have some other output stage options, not just the 45. It's not clear which of them we might support, at what level of support. So I won't say more just yet.

@PJ: As I am sure others would, I'd very much like to hear more about the other output stage options.

Title: Re: SII with output tubes other than 2A3 or 45?
Post by: Paul Birkeland on April 28, 2019, 07:16:33 PM

There are some other indirectly heated tube types that could be made to work in a Stereomour II, but I wouldn't expect them to be particularly strong performers sonically.

Maybe the RE604.

Title: Re: SII with output tubes other than 2A3 or 45?
Post by: Paul Joppa on April 28, 2019, 08:33:37 PM

Sorry to have been unclear - I was not thinking of other tubes. Work progresses, can't really say more just yet.

Title: Re: SII with output tubes other than 2A3 or 45?
Post by: Deke609 on April 29, 2019, 04:38:50 AM

Thanks PB and PJ.

@PJ: a different output stage circuit for the 2A3 would be a cool experiment. I'm sure there's are more than a few others on this forum who would enjoy playing around with a different output stage configuration.  Something to look forward to!