The ES250PW WIRELESS powered subwoofer delivers all the bass impact and excitement to your home theater while making set up a snap. A 2.4GHz wireless transmitter means that those long subwoofer cables are a thing of the past allowing you to place the sub anywhere in the room.Special effects in your favorite movies are loud and clear, without unwanted distortion or boominess. A powerful amplifier delivers up to 700 watts of peak power. Convenient level and crossover-frequency controls, and a phase switch let you tailor the sub's performance to your room's acoustics.