In article , RJH
wrote:


Well, thanks for all the opinions. I can't really argue with the
technical knowledge you all have, and I looked at Jim Lesurf's (I think)
page a while back and that seemed to say 'no measureable difference'.

The pages I did on this should show that there *can* be a difference that
would be easily measurable. Depends upon circumstances. This does not mean
it is large enough to matter, or even be audible, though. Nor is it a
forgone conclusion that any change will always be for the 'better'.


I've given it a go with some old qed 79 strand biwire stuff I happen to
have, and I'm afraid I think it sounds a bit better, particularly
extremes - bass and treble.

If the (apparent) changes are well away from the crossover frequency then
they are unlikely to be due to the effect I modelled on the webpages.[1]
That would be more likely to stem from using cables for bass and treble
that had distinctly different series impedances, or perhaps laying the
cables together in a way that produced an interaction between the cables.

[1] This depends upon the details of the cross-over networks, though.

There could be other variables - the cable itself, or the fact that I
cleaned everything while I was at it.

You would also need to set exactly the same power levels, and get your ears
and speakers into a similar state to before to judge small possible
changes. I routinely hear differences from one day to another even when I
have not changed anything. I put this down to changes in my hearing, using
a different level, and effects like temperature and humidity.


Being gullible isn't too bad if it doesn't cost anything!

Fair enough. :-)

You may note that some of Focus-JMLabs' really expensive speakers (well,
£5k) don't have biwire facility. Wonder why?

Pass. :-)

Slainte,

Jim

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