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
Pa-120 12/15/18 Inch Mid-bass Subwoofer Speaker 156-220 Magnetic 75 Mm Copper Clad Aluminum 250-1400w (1pcs) - Speakers - AliExpress
Kustom PA PA110-SC 10" Powered Subwoofer | Guitar Center
JBL EON718S 18" powered PA subwoofer — 1,500W peak at Crutchfield