Building a sub box for e46 convertible | E46 Fanatics Forum
Ideas of factory looking subwoofer for E46 M3 Convertible - NA M3 Forums
Older Chassis (E36, E38, E39, E46)
BMW E46 Convertible Hertz ESF20.5 8” Car Subwoofer installation in custom box and Hertz HCP2 Amplifier to drive the subwoofer. Really great sounding bass... | By In Car Music | Facebook
2001-2006 BMW E46 M3 CONVERTIBLE HARMAN KARDON SPEAKERS SUB SUBWOOFER | M Parts Worldwide LLC