Amazon.com: Acoustic Audio PSW500-12 Home Theater Powered 12" LFE Subwoofer Black Front Firing Sub,500 Watts
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Amazon.com: BESTISAN Powered Subwoofer, 6.5" Active Home Audio Subwoofer in Compact Design,LFE & Stereo Line Inputs & Audio Output, Built-in Amplifier for Home Theater/Receiver/TV/Speakers, Black, SW65D : Everything Else