Well here's the deal...i'm doing a 4th order blowthrough through the rear deck of my caddy . Can't decide if I should do 4 cheaper 12's or do 2 good 15's . I'm going to use either 4 powerbass s-series 12's or 2 powerbass xxl 15's . Either will have around 1500 watts . First set-up with 10 votes...