Mackie CR8SXBT 8" powered subwoofer with Bluetooth® at Crutchfield
Mackie Thump18S 1200 W 18" Powered Subwoofer with Thump15A Boosted 15" Powered Loudspeaker, Attachment Pole & 20' XLR Cable Bundle
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
Mackie Thump18S 1200W 18″ Powered Subwoofer
Mackie Thump115S 15-Inch 1400-Watt Active Powered Subwoofer