On Fri, 19 Nov 2004 13:26:40 -0000, "Keith G"
wrote:



Build quality is a tad better than 'home grown' (to be entirely honest,
dammit :-) with some nice cable-tidying touches and is generally equal to
the Arion Acoustics I had a while back. The PCB tracks are especially nice -
good and wide.

What more can you do? :-)


I would be most worried by those wire bundles going through chassis
holes without grommets - they will wear through sooner or later. Easy
enough to fit, though by snipping through the grommet and fiddling it
into the hole.

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

On Fri, 19 Nov 2004 09:06:47 +0000 (GMT), Jim Lesurf
wrote:

In article , Don Pearce
wrote:
On Thu, 18 Nov 2004 09:04:38 +0000 (GMT), Jim Lesurf
wrote:


I am not quite sure how:

A) multiple field emitters, polotrons, and various other vacuum-state
devices.

B) high mobility / ballistic or quantum well/dot or multiple barried SS
devices.

fit into the above picture. My understanding is that they have been
developed during the last couple of decades, and in some cases required
new understanding of the relevant physics and/or novel fabrication
methods.

Don't know if any of them have been used in audio, though. :-)

I think that last sentence sums up the position of valves in the
mainstream. And are your B) devices products of valve research or solid
state research?

Vaguely speaking, A = valves, B = solid state.

Slainte,

Jim

It is just that there are certainly devices that use free electrons
(not bound into any kind of lattice) emitted from sharp points in what
looks on the tiny scale involved like a vacuum. I think that in such
cases it is very hard to decide what you are really looking at.

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

"Keith G" wrote


When the amp arrived it presented no surprises whatsoever - appeared to be
exactly what it said on the 'eBay box'. The worst I expected that might
have to be done would be to push a set of decent trannies into it and
replace the odd resistor if and when they burn out. But, I hafta say,
there's no indication the (agricultural-looking) trannies aren't up to the
job


Actually, on reflection, the Chinese OPTs are no more agricultural-looking
than the Canadian Hammonds on my SET which you can see in this rather mellow
pic, behind Chinese amp No. 2...


http://www.apah69.dsl.pipex.com/keit...inesetwo02.jpg


(I'd have straightened me tubes if I'd known you were going to drop in!! ;-)

"Keith G" wrote in message


Two screen captures from 'Infernal Affairs' (a Kung Foo movie??):

http://www.apah69.dsl.pipex.com/keit...laffairs01.jpg

http://www.apah69.dsl.pipex.com/keit...laffairs02.jpg


(Says it all really!! ;-)

I think I've been transported back to 1962!

Says that the audio story in the movie is just as realistic as the rest of
the movie.

"Don Pearce" wrote in message

On Fri, 19 Nov 2004 13:26:40 -0000, "Keith G"
wrote:



Build quality is a tad better than 'home grown' (to be entirely
honest, dammit :-) with some nice cable-tidying touches and is
generally equal to the Arion Acoustics I had a while back. The PCB
tracks are especially nice - good and wide.

What more can you do? :-)


I would be most worried by those wire bundles going through chassis
holes without grommets - they will wear through sooner or later. Easy
enough to fit, though by snipping through the grommet and fiddling it
into the hole.

Or, judicious use of products like these:

http://www.vehicle-wiring-products.c...ing.html#gen47

http://www.devicetec.com/DTIProducts...st/Default.asp

http://www.pegasusautoracing.com/Pro...p?Product=4308

"Dave Plowman (News)" wrote in message
...
In article ,
Mike Gilmour wrote:
You're lucky. Have you seen what they go for on Ebay?

Nope..ball park how much?

200 quid plus.
More for one in good condition with manuals etc. Much more if as new and
with current calibration certificate.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&category=1502&item=57330374 57

--
*If a turtle doesn't have a shell, is he homeless or naked?

Dave Plowman London SW
To e-mail, change noise into sound.


Wow, folk will really pay that amount for an old tester. I think I paid £15
or therabouts for mine about 10 years with the manuals as well :-)

In article , Don Pearce
wrote:
On Fri, 19 Nov 2004 09:06:47 +0000 (GMT), Jim Lesurf
wrote:


Vaguely speaking, A = valves, B = solid state.

Slainte,

Jim

It is just that there are certainly devices that use free electrons (not
bound into any kind of lattice) emitted from sharp points in what looks
on the tiny scale involved like a vacuum. I think that in such cases it
is very hard to decide what you are really looking at.

Agreed. Once the devices become tiny you end up with 'ballistic' behaviour
and you might as well regard the semiconductor as a 'modified vacuum'. :-)

Thus at some point (pun) the point field emitters people have made for
'nano' (buzzword = grants) vacuum devices end up looking a lot like a
ballistic transistor with a small part of the semiconductor taken out. ;-

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

On Fri, 19 Nov 2004 08:33:29 GMT, "Trevor Wilson"
wrote:


"Stewart Pinkerton" wrote in message
.. .
On Thu, 18 Nov 2004 01:02:59 -0000, "Keith G"
wrote:

"Trevor Wilson" wrote

OK, don't bother coming to, er, Pommyland, to shop for amps atm,
then....

**The odd thing here is, that, to Aussies, there is Pommyland, Scotland
and Ireland. We don't label the entire UK with the term: Pommyland. We
don't think much about the Welsh (though I did live with a Welsh lass for
awhile). I guess it's all that coal mining and singing and stuff.

I would imagine that the Kiwis are more akin to the Welsh, he said
sheepishly................ :-)

**Perhaps. I am not aware of the status of the Welsh in Pommy society.

Rural yokels and sheep-shaggers. Sound familiar? :-)
--

Stewart Pinkerton | Music is Art - Audio is Engineering

In article ,
Mike Gilmour wrote:
Wow, folk will really pay that amount for an old tester. I think I paid £15
or therabouts for mine about 10 years with the manuals as well :-)

The other one is Ferrograph Test sets. I got mine for free when work
updated. A good set (with monitoring unit) makes about 200 quid too.

--
*Dance like nobody's watching.

Dave Plowman London SW
To e-mail, change noise into sound.

In message , Keith G
writes
OK, found this 'less' laying on the table after I had posted that....





(Pedant mode on)

Only hens 'lay' on tables. Perhaps you found it lying on the table?
Why is it that all these estuary-English speakers don't know the
difference between the two verbs?

(Pedant mode off)
--
Chris Morriss