Depending on the aesthetic appeal (meaning allowed by your s.o. if any) you can instead of coiling lay the cable in a narrow half ellipse that leaves from behind the speaker to it's side and returns to it. You can "fix" the wire to the floor by a proper device i.e. blue tack or removable adhesive to follow the intended path. Got to get creative if a carpet is involved... Just an idea I've been using for some time with good results. Hope this helps!
Luis
Luis