Amazon.com: Alphasonik AS10DF 10" 1200 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Sub woofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Subwoofer Air Tight Sealed Bass Enclosure :
EMPHASER EM-MBSUBR 20cm Car Subwoofer Compatible with Mercedes Benz Vehicles Plug & Play Subwoofer for Passenger Side 150W : Amazon.com.be: Electronics
Amazon.com: Pyle 8 Inch 1600 Watt DVC 4 Ohm Car Audio Subwoofer Speaker Set with 40 Oz Magnet and 1.5 Inch 4 Layer Voice Coil, Black (2 Pack) : Electronics