"Jim Lesurf" wrote in message
...
In article , JustMe
wrote:

"Chris Morriss" wrote in message
...
In message , Stewart
Pinkerton writes
On a point of information, Krells before the KAV series were always
specified as doubling rated power right down to 1 ohm. This isn't
repealing the laws of physics however, as my '50 watt' KSA-50 mk II
actually puts out 105 watts into 8 ohms, 195 watts into 4 ohms, and
does indeed drive 440 watts continuously into a 1 ohm load.

Not staying in Class-A of course :-)

The Kraken amp is Class-A, BTW - it just occured to me that most people
here are not familiar with it and I that I haven't mentioned this
previously.

Again, this is an area where the reviews are 'unhelpful' as they give no
real indication of the quiescent current level, or the output current up
to
which the amp remains class A.

If I guess and assume +/- 35 V rails and a quiescent of 1 A, the power
dissipation per channel comes out at about 70W. I am not at all sure if
that fits with a working temperature of around 55 C or not. But if the
values are of that order then it is probably essentially operating in
class
A with the kind of speakers/use in your case.

The picture in the HFW review seems to show plastic pack output devices,
but I can't see well enough to determine the actual package type or size.
So am not sure of the likely power rating of the devices.

When an amp is designed to operate as class A, I wish the reviews and
producer info would specify details like this as it would indicate the
working limits.

Slainte,

Jim

Pics of the actual amps I'm using (including internals) are at the same URL
I gave previously, or via
http://www.alchemisthifi.info/ranges...aken_index.htm
If by "plastic pack" you mean they come in strips in plastic packaging, then
that rings true with what I've seen of op devices used in other Alchemist
amps.
What significance would this hold?