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The Polk Audio Signature Elite ES12 is a 12-inch powered subwoofer designed for home theaters, delivering deep, impactful bass with features like a Class D amplifier, Power Port™ technology, and Time-Smart Phase Control. It has a long-throw 12" woofer for low-frequency response, a 300W Class D amplifier for power, and a front-firing, forward-firing design with dual Power Ports to reduce distortion and allow for flexible placement. The Time-Smart Phase Control ensures seamless blending with your main speakers, making it ideal for enhancing immersive audio experiences in large rooms.