Car Audio Phase problems 2012-08-21 05:04:19 I can't seem to get the phase right in my 2010 Camry with an aftermarket stereo system. I have 2-way component speakers in the front, and they sound better with one side wired with reverse polarity. For a given polarity for the subwoofer, such that it sounds best from the driver side, it needs to be reversed for the passenger seat. The problem is present even with a LPF set far below the crossover frequency.Is it common for car audio to have this problem? How do the poor acoustics inside a car account for the need to switch one side to reverse polarity? I wonder if I need to design a system with phase shifters. My goal is to find a setup that sounds good to both driver and passenger.