Re: Andre Jute and Phil Allison are very clever people..

"Ian Iveson" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> "jim" <[EMAIL PROTECTED]> wrote
> >
> > Hello !!!
> > Any ideas ?  Take a Williamson. Delete the two phase drivers. Use
> a 6EM7 and
> > drive 2 x KT88s  straight off  the big end of the 6EM7 as a
> concertina,  for
> > 40W AB1 ... Available HT ?  350 to 550 VDC.... Any thoughts ??
> > jim
> >
> What are the design objectives, Jim? What do you want from it?
>
> cheers, Ian
>


I want an, all octal, 6L6GC/KT88, 40W amp, times two, for a stereo pair.  It
should not have more than 20 resistors and  four coupling caps.  It must use
a concertina inverter. I want an open loop gain of  + 1000  between input
and OPV grids and I want the concertina to drive the OPVs direct.
HT is unlimited. I have 6SL7s, 6SN7s and Fred found me the 6EM7...... A
high mu/low mu pair of triodes  in the same glass......
kind regards
jim