I'm reminded of someone I met briefly - years ago
- who apparently not
only had an all-firebottle audio setup, but for the power output stage
was using radio-station power transmitting tubes - running class A.
Could heat his house with it, but it was dead flat from DC clear up
into the megahertz. Sounds like overkill to me...
I know some people that have done this as well, or just used an old AM
radio station modulator. I don't know about being dead flat from DC to
the MHz range - that was a pretty hard trick to do in the tube era even
at smaller signal levels.
For those that visited the old warehouse Armory a year and a half ago
with me - one of those big racks to stuff near the loading dock was a 35
kW water cooled audio amp. kW, not W. Used for testing sonar sets, I
understand.
William Donzelli
aw288(a)osfn.org