Well i just competed in a USACi SPL comp this weekend...i had 4 15" L7's in a 12 cu ft box. i had 2 amps powering them. a orion HCCA 250(a.k.a. Big Red) and a hifonics 750somthin....i only hit 145 db though...i think these speakers have much more potential..i just need a lil more power what do yall think.
yea i know using 2 different amps is prolly not the best thing in the world but its all we had...and i did have the subs up and port back. my port was 4" high 40" long and 19.5" deep