Lautsprecher Basskiste Subwoofer Clarion Eton Verstärker Einbau im BMW E30 Cabrio.
BMW 3er E30 - Ergänzungs-Boards mit Doppel-Bass-System
Wohin mit dem verdammten Sub? - Car-HiFi & Navigation - E30-Talk.com
Studio Incar - BMW E30 cab twin Audison AP10 subwoofer enclosure. We understand this won't be for everybody, however the rear foot space of this particular car is never used, the owner
Made this. Wanted something cleaner than just generic sub box. I can still easily get my spare wheel. : r/E30