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Amazon.com: 2X Harmony HA-P18 WS8 Raw Replacement 18" Pro PA 1200W Sub Speaker 8 Ohm Woofer : Electronics
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Amazon.com: Goldwood Sound GW-8004/8 Two Way 8" Woofer with Tweeter 50 Watt 8ohm Speaker,Black : Musical Instruments
Amazon.com: CHOOYO 6.5 Inch Subwoofer Speakers 80W 4 8 Ohm High Power HiFi Fever Woofer Music Audio Bookshelf Loudspeaker DIY Sound System (Color : 4 Ohm) : Electronics
Amazon.com: 4X Harmony HA-P12LS8 Replacement 12" Pro PA 800W Subwoofer - Speaker 8 Ohm Sub : Musical Instruments
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Amazon.com: Rockville RVP15W8 1000 Watt 15" Raw DJ Subwoofer 8 Ohm Sub Woofer 51OZ Magnet : Musical Instruments
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Amazon.com: 5 CORE 15 Inch Subwoofer Speaker 3000W Peak High Power Handling 300W RMS 15" Replacement 8 Ohm Pro Audio DJ Sub Woofer w CCAW Voice Coil Aluminium Frame 90oz Magnet FR