I have some that are 2.5 inches loop length 5 inch long total cable and they sound better than the 12 or 14 inch cables.Five inches just happens to be the wavelength in free space of a 2.4GHz WiFi signal. It also corresponds roughly to the wavelength of a signal induced and propagating in a wire at some cellphone frequencies.
The close spacing of the parallel conductors, and/or the fact that they are shorted together at the speaker terminal, probably results in dissipation of some of the energy that may be in the vicinity due to wifi or cellphone signals (notwithstanding the fact that the 6Moons review quotes one of the Audio Prism partners as denying that its effects are due to rf filtering).
Why any of that would be audibly significant, however, is beyond me, as is the mumbo jumbo in the review about ground plane effects.
Regards,
-- Al