hey all, i just signed in w/ the forum. actually, what i wanna know is what size sub/s is best for my application. first of all, i plan on purchasing the Pioneer Premier TS-C720PRS comps powered by the Zed Audio Gladius Burr Brown amp. has ne1 listened to these cause i agree the front stage is the most imporant. im building a SQ system for my 02 dodge ram single cab. so, air flow is a prob. my friend says that a 12 would be too big, but does it depend on the mounting depth + box size? I love subs like the crystal cmpx2 that they only make in a 12 and 15. even if say a 12 would fit; would it be too much? he also said 2 8's is best for sq but idk how. i realize sq is subjective, but only to a certain extent. id like to do 1 10