Not at all, that's the easiest way to do it. In my new Cavalier, the car
was
delivered from the factory with the front left speaker wired out of phase
!
I still can't believe it, although I am sure it is an isolated incident.


It was probably done that way on purpose. Every car I've ever done has
needed to have at least 1 speaker wired out of phase electrically to be in
phase acoustically.


Paul Vina