right now I have a 12in. mtx 9500 and a modded mtx 1501D. The sub is a single 4 I think. It is also in a sledgehammer box. I am either thinking of buying another 9500 and a box or is there something else I could buy that would be louder? I dont want it to be a lil louder, because it has to be worth the money of switching everything out. Also how much louder do you think it will be if I just add another 9500. It is in a cavalier. Thanks
