Run 1 set of 6.5" components in the front, amp them, deaden your front doors, and get rid of all the other speakers. That will give you a good starting point for any semblance of SQ. As for the BTL, a SQ driver it is most certainly not. i quess i will have to build up my speakers other than the subs i already have a set of diamond components in the kicks. ill add another in the door. i could add a 8 inch mid bass to the door also. would i be better off to sell the btl and get a loaded bl (can it take 2300 watts daily and still shake the chit out of my car if need be