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JBL EON718S 18-inch Powered Subwoofer – Kraft Music
Amazon.com: 5 CORE 15 Inch Subwoofer Speaker 2200W Peak High Power Handling 250W RMS 15" Replacement 8 Ohm Pro Audio DJ Sub Woofer w/CCAW Voice Coil Steel Frame 90oz Magnet 15-185 MS
JBL® Rolls Out All-in-One Subwoofer and Portable Speaker Subsystem | HARMAN
Tang Band W5-1138SMF 5-1/4" Paper Cone Subwoofer Speaker