Universal 6.5" Dual Ported Passive 400W Subwoofer Enclosure with Two 3" Horn Tweeters. When you want to take your car stereo from ordinary to extraordinary, choose this four-speaker system. It features two high-efficiency 6.5" woofers for thundering bass and two 3" horn tweeters for incredible highs. It also has a protective metal grill, and carpet covering. The compact size of the boombox makes it perfect for use in the car, SUV, truck, boat, RV, garage, workshop, or home. | Sdx Audio | | 400W STEREO SPEAKER SYSTEM | Black | Best Buy