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Monoprice Monolith 13in THX Ultra Certified 2000 Watt Powered Subwoofer Massive Output, Low Distortion, For Studio and Home Theater Systems - Newegg.com
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Amazon.com: Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish : Electronics
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