I bought a set of EXs (6.5, center, 6x9s) and now the 6x9s are sounding strange. I have them hooked to an amp, and the power output should be well within operational specs. However, even with the crossover set to 200, I am getting distortion. I have tried everything I can think of to fix. I called Customer Service last week and they told me to change from 80 on the crossover to higher. That hasn't helped. I love my Polks, but I am starting to get frustrated (my 1 -2 commute with distortion ain't cool). Anyone have any ideas?