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Amazon.com: Alphasonik AS12DF 12" 1500 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 :
Amazon.com: KICKER Comp 10" (25cm) Subwoofer in Down Firing Encl, 4-Ohm, RoHS Compliant : Electronics
Amazon.com: KICKER Comp 10" (25cm) Subwoofer in Down Firing Encl, 4-Ohm, RoHS Compliant : Electronics
Amazon.com: MB Quart RW-110A 800W Reference Series 10" Slim Low Profile Compact Under-Seat 4-Ohm Active Powered Subwoofer Enclosure with Built in Amplifier for Car RV ATV : Everything Else
Amazon.com: KICKER TRTP 10-inch (25cm) Thin Down Firing Subwoofer and Passive Radiator Enclosure, 2-Ohm, RoHS Compliant : Electronics