my set up so far is.......head unit to a cross-over in each front door which powers a mid (door speaker) and a tweater in each door. the same again in there rear doors, then i have my alpine 3000 watt amp in the boot once again to a cross over, with 2 more 6 x 9's and 2 1500 watt s type subs...and in an estate it sounds super
