different length speaker cable question

Coiling a zip cable will not really increase the inductance. The dipole magnetic field is essentially zero 5 conductor spacings away, so coiling will not enhance the magnetic field so inductance does not increase.

The propagation velocity of the cable is proportional to C/sqr(permittivity) for a constrained cable such as coax or stripline, a factor of 3 to 5 slower for widely spaced conductors. Even so, a fraction of lightspeed is kinda hoofing it.

However, the entities that do matter for signal settling time at the load is L and C of the cable, either lumped model (simplistic) or distributed (more accurate).
The equation is L*C=1034*relative dielectric coefficient with constrained cable, maybe five times that for spaced conductors.

Everybody understands how the effective L and C of a cable can slow down power delivery to the load.

John
 
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