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
Hifonics MR 8 BP Subwoofer: Amazon.de: Electronics & Photo
Crunch Car Subwoofer Passive 600 W GTO 10BP : Amazon.de: Electronics & Photo
Sinuslive Auto-Subwoofer passiv 1000 W SL-W365K: Amazon.de: Electronics & Photo
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