you are right! Thats why I'm using the Alpine PXE-H660.DHCrocks wrote:Are you planning on adding an amp? or will you run it off the stock amp. My concern is the noise cancelation system they have, I want more bass too since the stock sub is not that great but the noise cancellation system uses the speakers and if you add an amp it might throw off the balance of the system and you might get noise out of the sub since you will be ampliying the signal and increasing the volume of the NC system.