"Speaker Cables: Can You Hear the Difference?", Laurence Greenhill in
Stereo Review.

Stereo Review is hardly the magazine for meaningful reviews. If they
couldn't hear any differences between speaker cables it's probably because
they were listening to Bose speakers.

Good doesn't have to be expensive. I have some home-made cables and
interconnects that sound better than others I've tested in the several
hundred dollar range.