8 Inch BW Car Subwoofer For BWM F30 E90 X1 X3 X4 F10 G30 G20 F20 F22 F23 F48 F34 E60 Front Row Seat Under Bass Speaker Woofers - AliExpress
BW-1P128A - BM Audio
Lyngdorf BW-2 10" Powered Subwoofer; BW2; White | Reverb
Hifonics BW-110A 800W 10" Under Seat Powered Subwoofer Active with 4 GA Red Kit | eBay
8th Street Music - Peavey 1502-8 DT BW
Peavey 1201-8 BW 12" Woofer Speaker Driver
Amazon.com: Hifonics Brutus BW-110A - 800 Watts Compact Amplified Under The Seat Car Truck Subwoofer Low Profile with Bass Remote, Great for Vehicles That Need Bass But Have Limited Space, Black :