i have 1-12 l7 in a sealed box and am not to happy with...anything produced by it. i want cleaner tighter bass. so i need suggestions from people who know the best products out there. ive read up on Elemental designs 11Kv.2 subs and was thinkin about two of those in their ported encloser. i want to still have lots of SPL but i want more SQ then the L7's had. i have a kicker kx600 amp so a sub/subs at that rms would be convient.