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Aiyima 5.25 Inch Audio Music Subwoofer Speakers Dual Magnetic High Power Fever 4 8 Ohm 100 W Woofer Loudspeaker Diy Sound System - Speakers - AliExpress
Swans SUB 50 Dual 10" Subwoofer 100 Watt *New* CHRISTMAS SPECIAL!! DEA – SpeakersAndAmps.com
Infinity PS-8 Home Theater Subwoofer Active Crossover Powered 8" 100-Watt Black | eBay