Doubtful..........unless its a purpose built spl install......not a street beater as we have here.......even then, the installer would determine the louder sub then........My reasoning is that he said wanted spl, and out of all the subs mentioned the power hx2 wins in spl.
Not sure about the new powers, as I haven't seen any specs on them, but the older ones do not have near the potential, in any install where you'll be playing actual music, that the W7 does. Period.