I have an x9 and am considering replacing the rear the rear, under the seat sack with 500# of lead and four 8s. Originally i was thinking of Solobarics (s8l7) but now have heard great stuff about JL Audio 8w3's.
1) are four 8s worth adding?
2) how will four 8s compare to the S12L7 i have in the bow? would a 12 and four 8s be DAMN loud, or just loud?
3) what 8s are best considering small box volume, less than a cube? No IDMAXs or 8w7s...
Consider that all four 8s have to be powered by one old school Fosgate pushing about 1400 real watts. Thanks for comments and advice...