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 :
Lyngdorf BW-2 - Lyngdorf Audio
AS1
Are these any good? B&W AS1 subwoofer : r/audiophile
BW-8610S 15" active subwoofer - Buy Professional speaker, 15" active subwoofer, China Enping speaker factory Product on BOWAY SOUND
Best Buy: B&W DB Series Dual 12" Powered Subwoofer Rosewood DB1D SUBWOOFER, ROSENUT
HK subwoofer size - BMW M2 Forum
Bowers & Wilkins ASW610 (Black) Powered subwoofer at Crutchfield
Subwoofers
Bowers & Wilkins DB3D (Gloss Black) Powered subwoofer with digital processing and app control at Crutchfield
Bowers & Wilkins 600 Series 10" 200W Powered Subwoofer White B&W ASW610-WHITE - Best Buy