Amazon.com: DS18 PSW12.4S 12" Shallow Mount Subwoofer 1200 Watts Max Power 600 Watts RMS Single Voice Coil 4 OHMS Water Resistant - Best Sub for Tight Spaces in Car & Trucks - 1 Speaker : Electronics
18” Active Subwoofer 1200 Watts Class-D Amplifier - KXDII18A
American Bass Elite-1544 15" Car Subwoofer 1200 Watts DVC 4-Ohm
Amazon.com: Planet Audio AC8D 8 Inch Car Subwoofer - 1200 Watts Maximum Power, Dual 4 Ohm Voice Coil, Sold Individually : Electronics