I have JBL Compont 6 1/2's w/seperate mounted tweeters along with 4's in the rear w/seperate mounted tweeters. Each speaker has its own crossover (Came that way) And put the 6 1/2's in the old Bose door panels. Put the 4's in the rear shock towers, and put the 1 1/2" on the center console. Up by where your elbow would be at (on a 2 seater) I took the 1/2's tweeters and mounted them near the rear part or each door. They are really clean, but LOUD. (But hey, my sub's aren't hooked up yet => )