Amazon.com: Replacement QSC 18" 1000-Watt 8 Ohms Sub Woofer Speaker For QSC HPR181 Series : Musical Instruments
Amazon.com: Skar Audio SK1X18V Single 18" Universal Fit Ported Subwoofer Enclosure : Electronics
Amazon.com: Gemini Sound ZRX-S18P 18" Inch Woofer Professional DJ PA Systems Active Powered Subwoofers with 1600W Watts Class D Digital Power, 3" Voice Coil, Line/Link in XLR Connectors : Musical Instruments
Amazon.com: Gemini Sound ZRX-S18P 18" Inch Woofer Professional DJ PA Systems Active Powered Subwoofers with 1600W Watts Class D Digital Power, 3" Voice Coil, Line/Link in XLR Connectors : Musical Instruments
Amazon.com: Sound Town 18” 1000W Cast Aluminum Frame Woofer (Low Frequency Driver), Replacement Woofer for PA/DJ Subwoofer Cabinets (STLF-18500A) : Musical Instruments
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Amazon.com: CELESTION FTR184080FD FTR Series 18-Inch 1000-Watt Subwoofer, Black : Musical Instruments
Amazon.com: Sound Barrier SBNC18 2000 Watts Raw 18" Sub woofer Speaker Component Driver with 4 inch Voice Coil and Cast Aluminum Basket Pro Audio PA Cabinets - High Handling Power Heavy Duty :