BOSS Audio Systems CH12DVC Chaos Series 12 Inch Car Audio Subwoofer - 1800 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck, Boxes and Enclosures, Use With Amplifier
Amazon.com: Planet Audio AC12D 12 Inch Car Subwoofer - 1800 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier : Electronics
PYLE CAR AUDIO PL1890BL NEW 18 INCH 1800 WATT DVC SUBWOOFER BLUE CHROME BASKET - Newegg.com
1800W 12 Inch 4Ohm Car Active Subwoofer Speaker Bass Audio Woofer Portable High Quality High Power Amplifier - AliExpress