Hertz DBX 30.3 Subwoofer 1000 W : Amazon.nl: Elektronica
Active Car Audio System 10 Inch Subwoofer 30Hz-80Hz Bass Square Speaker - China High Sensitivity Car Subwoofer, 10inch Square Car Subwoofer | Made-in-China.com
Wavemaster Fusion HiFi subwoofer Grijs 200 W 30 Hz - 180 Hz | bol