German Audio Specialties - It is official: We are finally satisfied with the performance of the E30 'Vert box. This thing finally has real "slam" with only 2 8" woofers, and cheap
TTT 40 - Endstufen, Subwoofer, ALPINE CD-Radio vs. BMW Professional RDS mit Line In - YouTube
Lautsprecher für BMW 3er E30 Cabrio 1982-1994 Kenwood 2-Wege Koax 320W
Late Model Vert Subwoofer Install (Hybrid Install) - R3VLimited Forums