Alpine SXE-2035S Casse per Auto coassiali a 3 Vie da 20 cm. : Amazon.it: Elettronica
Amazon.co.jp: Alpine SWE-1080 Powered Subwoofer, Under 7.9 inches (20 cm) Seat Mount Type & KTP-600 4-Channel Compact Digital Power Amplifier (Set Purchase) : Automotive