Alpine introduces the all-new X-Series of high-grade speakers, subwoofers and amplifiers. These products have been engineered and tuned to create a perfect match for extraordinarily dynamic, realistic sound reproduction and a spatial sound impression. With Alpine X-Series subwoofers, you get the top of Alpine’s subwoofer technology for massive and accurate bass output. These flagship subs have been engineered and tuned with highest precision and use highest grade materials.