DN10’s unique 3XR™ Architecture means it delivers all the bass you need and then some, performing significantly louder and clearer than other 10” subwoofers. Descend’s unique 3XR Architecture provides triple the bass-producing surface area of a traditional ported subwoofer. This extra surface area moves more air, resulting in massive low end. And because 3XR doesn’t use ports, it also provides crystal-clear sound with no port noise distortion.