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
Alpine - R2-W8D2 20 cm (8-Zoll) R-Series Subwoofer mit 2 Ohm Doppel-Schwingspule