For right now im just going to stick with one 15" in a sealed 2.3cft box because im on a budget and running off a Lanzar HTD2600D amp. Im going to start on the big 3 this weekend on my caddy, this will be interesting!!
i've got two comin in the mail also. powering them with a DEI 1500d. hope i don't need the big three though. what size box are you putting them in? i'm going 5 to 6 cuft. @ 35hz. because that is all i can squeez in m trunk.