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Old August 31st 08, 08:58 AM posted to uk.rec.audio
Jim Lesurf[_2_]
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Default LS Cables - Transmission Line vs Lumped Element

In article , Don
Pearce
wrote:
Eiron wrote:
Don Pearce wrote:

Thanks for that, Jim. Pretty much what I expected, with the (for many
counter-intuitive) result that the high capacitance cable had the
flattest response - the expected result of having a better
characteristic impedance match.


You could also say that it is the low inductance cable that has the
flattest response. That's not at all counter-intuitive.



So which are you going to pick, and under what circumstances? Go with
the characteristic impedance and you will be right every time, because
it contains both L and C in the correct proportions.


The results to be published show this is simply incorrect. You would not be
"right every time" to do that.

The problem is that values like the ones you did for characteristic
impedance aren't the right values at audible frequencies, and the actual
value changes with frequency across the audio band. With most LS cables,
most (or all) the audio band is below the R'/L' turnover point.

Slainte,

Jim

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