On Sun, 29 Jul 2007 14:36:37 +0100, Jim Lesurf
wrote:

Hi,

Just to let anyone who may be interested know that my 'Audio Misc' and
'Armstrong' sets of webpages have now been copied onto a new server/domain.
The URL details are in my sig, below.

Demon recently 'improved' (sic) their webhosting arrangements and this
prompted me to finally do the above. All the old material was copied across
a couple of weeks ago, Since then any new material has only appeared on the
new website. In due course the old demon-hosted versions will be removed.

FWIW The most recent addition has included circuit diagrams of some early
Radford valve amps. These aren't yet mentioned on the main Audio Misc page
as I plan, first, to add more Radford material. But the Radford circuits
can be found directly via.

http://www.audiomisc.co.uk/Radford/c.../circuits.html

Slainte,

Jim

JIm - interesting circuits, but they look like it took a bit of
fettling to get them flat and stable. Do you know the history of the
pole/zero combination across the first anode load (ok, i can see that
Mullard felt it necessary in the first place)? Also C7/R13 in the
first Radford circuit. Was it all there to make a circuit that was
able to handle overall feedback without honking?

d

--
Pearce Consulting
http://www.pearce.uk.com