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Old January 21st 06, 11:39 AM posted to uk.rec.audio
Iain Churches
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Posts: 617
Default Power Cable Challenge


"Jim Lesurf" wrote in message
...
In article , Iain Churches
wrote:

"Jim Lesurf" wrote in message
...



I agree. FWIW I have been wanting for *decades* for people to engage
in this test in sufficent numbers to get useful and reliable
statistical results.



Jim. When I wantd to organise some evaluation tests here in Scandinavia,
I approached a broadcasting company and also a magazine. Between them,
they laid on the facilities and the equipment.


The problem is that people make the claim, but then refuse to engage
in the test...


I had no difficulty in finding candidates for the component evaluation
panel with which I was involved. It was not necessary to add any
financial incentive as Mr Pinkerton has done, but the word "challenge"
was never used either:-)


Can you say where the details of the test systems/protocols/results are
published? I would be interested in reading them.


They are not published at the moment, as they are to be part of a series
of tests. I am told there is a very good possibility that they will be
carried by an English language magazine, but if not, I will ensure
that you get a copy plus a translation. I was grateful to you for your
interest and suggestions regarding the protocols, when we discussed
this matter earlier.

As has recently been posted elsewhere, some 'ABX' / DBT tests *have* been
reported - *some* of which apparently show some component differences are
audible.


Indeed. As we found. But only a few participants had
sufficiently good levels of audio perception to reliably and repeatly
pick out the changes. I think this links nicely with something that
Andy Evans wrote regarding timbre.

Another set of perception test in the same series, proved that most people
without specific training are considerably more "cloth eared" (please
excuse the technical terminology!) than one would have imagined.

This is something that has been apparent to the record industry
and broadcasters for a very long time. They receive very few
complaints from the public and so could, and perhaps do,
set their "quality threshold" accordingly.


However I don't know of any for cables that fall outwith the
'exceptions' listed on


(snip)


I have not been, and do not intend to be involved in cable testing,
except perhaps as an interested but impartial participant, as part
of a group,without any expectations one way or the other.
I would certainly not become involved in any test where large
amounts of money and equally large mouths are involved!! :-)


Since this thread is actually titled "Power Cable Challenge" I should
add that I also know of no such tests that have shown differences
for power cables.


Are you surprised? As I mentioned previously, I would have
thought with your industry connections, you would have been
able to get a test organised with the help of a magazine and a
studio or broadcaster.


Regards to all
Iain