Price Match Guarantee Polk Audio Signature Elite ES10 Subwoofer (Black) Experience powerful bass with the Polk Audio Signature Elite ES10 Subwoofer. Designed with a 10" long-throw woofer and a robust 200-watt Class D amplifier, this subwoofer enhances your home theater and music systems by delivering defined lows and rich dynamics. The powered subwoofer features Time-Smart Phase Control and a rear-panel digital control for easy integration with your existing setup, providing a full 360-degree ph