Amazon.com: KICKER TRTP 12-inch (30cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
12" Inch 30cm Slot Ported Black Carpeted Car Sub woofer MDF Box Bass Enclosure: Amazon.co.uk: Electronics & Photo
BOX VUOTO CASSA VUOTA PER SUB SUBWOOFER DA 30,00 CM 300 MM 12" DI FORMA TRAPEZOIDALE DA 30 LITRI IN SOSPENSIONE PNEUMATICA (CASSA CHIUSA) : Amazon.it: Elettronica
SWD-355 - Subwoofer Amplificato in Cassa da 12" (30cm) – Alpine Italia Webshop