I have the Polk MM6501 components in the front and rear. They are powered by a JL amp. The JL amp and (its the weakest 4 channel JL makes 80x4 RMS) is just too much for the
car speakers. It's actually pretty pathetic how over rated the polk speakers are. They say MM6501 can handle 120 watts RMS. That is so far from the truth, maybe around 40 or 50 watts RMS. Personally my Rockford Fosgate FNQ components sounded better and handled much more power. They are not cheap but just some input. I'm sure some will disagree with me, but personally I haven't had much luck with them. Save your money and go with something else. The JL amp is on the other hand one of the best amps I have ever owned. JL makes great quality products.