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Amazon.com: QSC KS118 Active 18" Subwoofer : Musical Instruments
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Amazon.com: Peavey PV 118 18 Inch Subwoofer : Musical Instruments
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Amazon.com: Seismic Audio - 18" Raw Subwoofers/Woofers/Speakers - PA DJ Pro Audio Replacement Sub - 750 Watts RMS - 240 oz Magnet - 8 Ohms - 4" Voice Coil : Musical Instruments
