i have minimum cpace im my mustangs trunk so i am between two 11Ov.2's or 1 16Ov.2, but will the 15'' still have high spl in a 1.5 cu-ft sealded box?(a vented woulnt work for te 15'' but the twwo 10's would be in a vented box..) both subs would run off a mtx 801d. does anyone know if that sub(15'') will get loud in only 1.5cu-ft?