Mackie SWA2801z 800W Dual 18-inch Front-Firing Subwoofer • Available from ChurchGear
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Mackie Thump 18S 600W 18" Powered PA Subwoofer with Dual XLR Inputs, Stereo Full-range and Highpass Outputs, Adjustable Level and Polarity Controls, Built-in Handles, and Pole Cup - Walmart.com