I have a 07 trailblazer with all stock audio. Im looking to add a pair of components up front and midbass in the back. i dont want a sub so i want the midbass. im looking into getting the alpine type x reference 6.5's up front and i need some help choosing the right set of midbaas. i will be using an amp to power the front speakers and another amp for the midbass. i dont want to go over $270 for a pair of midbass. also is there a difference between 6 1/2 midbass speakers and 6 1/2 component subwoofers?