Ok, so i got my caraudiomag today, and they have the 2006 audio directory. they had re subs in there. They had all the models, and even one i have never heard of before. The specs were for a spl sub that would kill.Its called the xmx here they are. xmx18- msrp-$8,999 vc-quad rms-5000 sensitivity-96 MOUNTING DEPTH-25INCHES! WEIGHT-73 POUNDS! now get this, it had 8.9" of peak tp peak excursion. thats a beast. There is also a 24" model bu the specs werent much different.