Wicked C.A.S. > BMW > BMW Z3 M COUPE 99-2002 10" Magic Box SUB BOX SUBWOOFER ENCLOSURE
BMW Z3 M Roadster 8" subwoofer enclosure with Kicker 10C84 - YouTube
Bimmerforums - The Ultimate BMW Forum
BMW Z3 Model 81S Subwoofer - Integral Audio
Factory Auto Sound / FAS Group - Custom subwoofer enclosure for a BMW Z3 Roadster. 8" Hertz Energy woofer. 6.5" Hertz Energy components and a 5 Channel Hertz amplifier as the power
BMW Z3 Model 81S Subwoofer - Integral Audio
BMW Z3 Subwoofer first attempt : r/CarAV
Where to start first - 1999 BMW Z3 Coupe | DIYMobileAudio.com Car Stereo Forum