wrote in message
ups.com...
Robbert "bad scientist" Morein opined:

I speculate this is due to both low capacitance, and reduced skin
effect.

Mr. Morein: There is no audible skin effect in the frequency ranges
that audio cables operate in.

I'm sorry, but your assertion is not well grounded.

Two aspects of the above statement are subject to dispute:
1. There is no trivial mathematical basis for it.
2. It may still be true, but there are no publications that support it. The
publications of Malcolm Hawksford go against the above statement.

If the poster wishes to claim point "1", the below serves as a refutation:

The skin depth is defined as the depth at which the conductivty is reduced
to 1/e from the surface value. e ~ 2.718

The formula varies depending upon the material. Assuming copper, the skin
depth sigma is given by sigma = 2.6*K1/sqrt(f).
At 10 kHz, the skin depth is .026 inches = .664 millimeters.

HOWEVER, the factor of note, 1/e, is an artifact of the equation that
determines skin depth. For audibility, it is more relevant to consider the
attentuation in dB, if the attenuated cross section were driving an ohmic
load.

The magnitude of the derivative (which is negative) of the conductivity
curve, is greatest at the boundary. The loss in conductivity of one factor
of 1.3, is approximately equal to 0.664mm/4 = .166mm at 10 kHz.