Your subwoofer can only perform as well as the sub box you put it in. The wide selection of enclosures we carry at HiFiSoundconnection is sure to fit your car audio needs. We carry many sizes and types of boxes for every subwoofer application. The main advantage of buying an empty box is the amount of freedom it gives you. If you already have some subs and just need a box, our enclosures are a great solution, we have a enclosure for almost every size, and type of subwoofer.