Basser BMW 3 E36 Cabrio (1990 - 1999) Fit-Box (8in/20cm) Subwoofer Enclosure | Audio systems | Car parts | Online shop BM.lv
4.5 Inches Midrange Speaker For Bmw E21 E30 E36 E90 F22 F25 F26 F30 F32 Hi-fi Full Range Frequency Speakers Audio Music Stereo - Multi-tone & Claxon Horns - AliExpress
e36 coupe - 'Stealth' sub boxes & mould to make duplicates | BMW Forums : BimmerForums
How to Install a subwoofer into a BMW 3 series (E36) « Car Stereo & Audio :: WonderHowTo