Rockville K5 W10K5S4 10" 1200w 4 Ohm Car Audio Subwoofer Sub 300w RMS CEA Rated! - Rockville Audio
Amazon.com: DS18 ZXI8.2D High Excursion 8" Car Audio Subwoofer 1200W Watts DVC 2-Ohms Quad Stacked Magnets. High Performance Bass for Vehicle Stereo Sound System (1 Subwoofer) : Electronics
BOSS Audio Systems P10SVC Phantom Series 10 Inch Car Audio Subwoofer - 1200 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier