ROCKWOOD XR-1515 15" CAR/HOME/DJ SUBWOOFER ROCKWOOD XR-1515 15" 800 WATTS SUBWOOFER CAR/HOME/DJ Priced and Sold as a Each 4 Ohms Impedance; Sensitivity: 89dB GREAT FOR CARS, LARGE SUVs, VANS, RVs, TRUCKS, & BUSES! Ship From and Sold by CarAmpAndSpeaker