let me tell you these things pound....i bought these for $109 apiece off etronics.com, and im pushing them with a hifonics bx1500d amp...i have them in a 90 camaro, and these things will hurt your ears at mid-high listening levels. and the excursion is amazing, its about an inch on some songs....if you want some subs that are stupid loud and won't hurt your wallet, these are the subs for you........