i have a bmw 3 series and unsure what i want to put into as far as subs go. i want to be in the 145-150db range. its going to be a bandpass box with the top deck ported...like a blow through..so to speak. i am looking at 2 12" cvx, rf t1's, or solo x's. i know that i have ready some guy with 2 10" solo x's in the low 150 range. an. i am not paying retail on the subs so thats why i am looking at these. thanks