Powerful Bass - 10-inch powerful pre-loaded subwoofer with sealed enclosure produces a dynamic bass response that enhances the audio experience. Butyl Rubber Surround - Butyl rubber keeps the cone moving in a linear direction, seals the cone to the basket and quickly dampens cone vibration once the signal has changed or stopped. Aramid Fiber Interlaced Injection Molded Polypropylene (IMPP) - The Aramid Fiber Interlaced IMPP subwoofer cone is incredibly strong and low mass with high rigidity and superior strength to produce deep, powerful and undistorted bass. Excellent Sound Reproduction - Its high-quality components and precise engineering delivers accurate and detailed sound.