Renegade RXS1000 Car Subwoofer Passive 400 W : Amazon.de: Electronics & Photo
Amazon.com: KICKER TRTP 10-inch (25cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
Pioneer TS-A2000LB Passive Subwoofer, Powerful Enclosure Subwoofer with 700 W Maximum Power, 20 cm, IMPP Membrane, Black, Continuous Output Power 250 W : Amazon.de: Electronics & Photo
Amazon.com: KICKER TRTP 12-inch (30cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics
Crunch CRB250 Auto-Subwoofer passiv 500W: Amazon.de: Elektronik & Foto
Hifonics TD-200R Passive Car Subwoofer : Amazon.de: Electronics & Photo
Amazon.com: Pioneer TS-SWX2502 10 inch Shallow-Mount Pre-Loaded Enclosure : Electronics
Amazon.com: Sound Storm Laboratories PB8 Car Subwoofer and Amp Package – Built-in Amplifier, 8 Inch Subwoofer with Passive Radiator, Remote Subwoofer Control : Everything Else
Hifonics MR 8 BP Subwoofer: Amazon.de: Electronics & Photo
Crunch Car Subwoofer Passive 600 W GTO 10BP : Amazon.de: Electronics & Photo