Definitive Technology DN8 500W 8 inch Subwoofer with Dual 8 inch Bass RadiatorsDN8 Ultra Performance, 500W 8 Subwoofer With Dual 8 Bass Radiators DN8s unique 3XR Architecture means it performs louder and clearer than other 8 subwoofers. Fits Anywhere Just over one foot wide Loud & Clear Unique 3XR Architecture More Bass Like a 10 subwoofer in an 8 sub cabinet 3XR Architecture More Bass from the Same Space Descends unique 3XR Architecture provides triple the bass producing surface area of a traditional ported subwoofer. This