B&W (Bowers & Wilkins) DB4S Subwoofer - Latest Model - Bluetooth – SkyFi Audio
Bowers & Wilkins 600 Series 8" Black Subwoofer - FP40827
B&W ASW 675 Subwoofers user reviews : 4.1 out of 5 - 14 reviews - audioreview.com
B&W ASW850 Subwoofer Review
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 :