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Amazon.com: NHT CS-10 10-inch Long Throw 300 W Powered Subwoofer | Sealed Box | Deep Musical Bass | Piano Black High-Gloss Paint : Electronics
Amazon.com: Sound Town 12" Raw Woofer Speaker, 300 Watts Pro Audio PA DJ Replacement Low Frequency Driver (STLF-1270) : Musical Instruments
Amazon.com: Polk Audio PSW111 8" Powered Subwoofer - Power Port Technology | Up to 300 Watt Amp | Big Bass in Compact Size | Easy Setup with Home Theater Systems Black : Electronics