Someone ran a test, forget who...concerning a coiled speaker cable...there was no discernible sound difference between a coiled or uncoiled speaker cable. My left speaker cable is coiled, my right is not. Sounds fine.Sounds like that someone was you.
If you have enough speaker cable to coil then trust me, it is not speaker cable. It is wire. Off a reel.
If it sounds fine to you, wonderful. You can save a tremendous amount of money. We should all be so lucky.