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Amazon.com: Alphasonik 18" Flagship Series 3000 Watts Raw Sub Woofer Speaker Cast Aluminum Basket Driver for Pro Audio PA DJ Cabinets Subwoofer with High Handling Power Extremely Clear and Loud - FW1832 :
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Amazon.com: Mackie THUMP Series, 18-Inch 1200-Watt Subwoofer with Professional band-pass design Dual XLR inputs Stereo high-pass and Stereo full-range outputs - Black (THUMP18S) : Electronics
Amazon.com: Hk Audio Linear 7 118 Sub A 2000W Active 18 Inch Subwoofer : 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
Amazon.com: Rockville RVW1800P8 1800w 18" Raw DJ Subwoofer 8 Ohm Sub Woofer 107OZ Magnet, Black : Electronics
Amazon.com: 5 CORE 2500 Watt 18 Inch RAW DJ Speaker PA Subwoofer Replacement 8 Ohm Sub Woofer, Aluminium Frame, 4” Voice Coil FR 18 190 AL : Musical Instruments
Amazon.com: PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Marine Underseat Car Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - PLMRSBA10 :