Rmax = minimum loudspeaker impedance * 0.02

If loop resistance for a given length of loudspeaker cable exceeds Rmax then power loss may be audible e.g. greater than 0.1dB. Or, the cable may have an effect on heard sound when compared to another cable where loop resistance is less than Rmax.

Thus two equivalent loudspeaker cables would both have a loop resistance less than or equal to Rmax. The exception to this would be where the reactive components of two cables are sufficiently dissimilar (usually owing to conductor geometry).

The debate, as I see it, is not that all loudspeaker cables sound the same (they don't). It's the stuff about metallurgy, dielectrics and thighs of vestal virgins producing gob-dropping effects.

Paul Ranson wrote:

Pre-fuggin-cisely