Mackie Thump 18S 18" 1200W Powered DJ PA Subwoofer with Professional band-pass design Dual XLR inputs Stereo high-pass and Stereo full-range outputs - Walmart.com
Mackie SWA1501 500-Watt Active 15-inch Subwoofer • Available from ChurchGear
Mackie Thump18S 600W 18-inch Powered Subwoofer
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Thump118S 18 inch. 1400W Powered Subwoofer - Willis Music Store
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Amazon.com: Mackie CR-X Series, 8-Inch Multimedia 200w Subwoofer with Professional Studio-Quality Sound, Bluetooth and Desktop Volume Control (CR8S-XBT) : Musical Instruments