With a loaded subwoofer box you can instantly upgrade your car audio system. These subwoofer and enclosure combinations are tuned perfectly and pre-installed ready to go. We have many configurations that will let you choose how much, and what kind of bass you want in your car audio system. We have Single and Dual enclosures in, Eight, Ten, Twelve, and Fifteen Inch sizes. We also have vented and sealed solutions that will give your audio system the sound you're looking for.