"Nick Gorham" wrote in message
...
Keith G wrote:
"Stewart Pinkerton" wrote



And this one: 5725720783 (although I've been advised that these are a
teensy
bit *lethal*.. !!! :-)

Yes, but at 400 squids, even I am having a think! I doubt I could even
build that pretty a chassis for that money.................



*Exactly* and if the trannies are at least OK, the rest's all
'bonus'......

From what I have been told (I haven't heard one myself yet) the
transformers are more than acceptable, Ok, I doubt they are up to the
standard of (say) Brian Sowter, but then I don't think many commercial
valve amps amps are, even if they cost ten times as much as this one.

The only problems I have had reported are they are prone to hum, this is
fixable it seems by adding a bipass cap to the first mu stage. I am not
entrily sure why it suffers from hum, or why the bipass would sort it, but
I suspect a proper investigation armed with a scope would get to the
bottom of the problem.

This is the circuit if anyone is interested.

http://www.yogoo.com/xd845t.htm

If I wasn't so commited to the GM70 amp at the moment (and have a pair of
211's sitting on the shelf for the next one), I would be tempted as well,
Worth it for the transformers alone I would suspect, not to mention the
valves and sockets.

If anyone is looking to try a SET with balls I guess this is a great way
to start.

I have said before to Keith (and added it up) that it would cost somewhere
in the order of £1800 to make a 845/211 amp getting parts from western
suppliers, thats even before making a profit from selling them.



Yes, that's damn near £2K for the *parts only* and that will *not* give you
any fancy cosmetics!

It's hard to find prices of commercial 845 amps on the Net - no bugger dare
publish 'em! From what little I have seen these things start at USD 5,000 or
so (for a single monobloc) and can go up to any figure you care to name!
Having said that, I think it needs also to be pointed out that messing with
these buggers is not for the 'inexperienced' or 'feinthearted'...!!! :-)

Keith G wrote:

It's hard to find prices of commercial 845 amps on the Net - no bugger dare
publish 'em! From what little I have seen these things start at USD 5,000 or
so (for a single monobloc) and can go up to any figure you care to name!
Having said that, I think it needs also to be pointed out that messing with
these buggers is not for the 'inexperienced' or 'feinthearted'...!!! :-)



Here is one as a example

http://www.enjoythemusic.com/magazin...llandaries.htm

--
Nick