I have a question on polarity. It wasn't until after I ran the speaker wires in the ceiling that it didn't have a line indicating one wire from the other. I ran a THX test which are available on some DVDs and really can't find a bad sound, for example, when it tests for in-phase, it sounds how it should, and when its out of phase, it sounds bad. even if i switch the wires and test it again. not sure if this makes sense. does polarity really matter if all the speakers are seperate? i remember when polarity was a problem back in high school when i had a sub box with 2 subs, you can definately hear a difference. well, anyhelp is greatly appreciated.