QUOTE (n68 @ Aug 14 2003, 08:48 PM)
of course.. there is difference in material.
(core.. if there is solid core.. or stranded core..
de-electric.. mass.. and the way the core is shielded..)
all this makes a cable more "tuned" for certain freq. - bands..
I don't have facts at hand, actually, other experts provided documentation in long previous threads. But if I'm not mistaken, solid core or standed core can have an influence on the frequency range for which the cable is tuned, but usually, frequencies below 100 kHz are considered low. Between 100 kHz and 10 MHz, they are average, and above 10 MHz, high. In other words, this factor doesn't significantly influence frequencies in the audio range.
For shielding, dielectric, capacitance etc, on the other hand, the audio range is a complete mess. The formulae are simplified for frequencies below 100 Hz, or above 100 kHz. In between, the behaviour or a coaxial cable for example, is very complex.
This issue is avoided in audio using very low impedance sources (0.1 Ohm). This way, the effects of capacitance, resistance etc are rejected far beyond audibility.
There is a pecular case : high capacitance cable frying some audiophile amplifiers. It comes from a special conception of these amplifiers : with an added capacitance at the output, they fall into "positive feedback". A very high frequency (in the MHz range ?) then resonates at full power in the cable and the ampli, possibly damaging it.
This comes from a flaw in their conception : they should not allow positive feedback under any circumstances. This is done on purpose, in order to improve the sound with low capacitance cables.