Hi MABabs,

Much of the time you won't hear any difference between the 0 and 180 phase settings for the subwoofer. It depends on the room and the location of the sub in the room, so every sub/room placement is unique. In the last three places I've lived, I don't recall ever hearing a difference in the phase switch settings on various subs I've used.

Regards,

Alan Lofft,
Axiom Resident Expert (Retired)