DS18 Hooligan X 15“ Competition Subwoofer 6000 Watt 1 Ohm 4" DVC HOOL-X15.1DSPL | Being Patient
Amazon.com: DS18 Elite Z15 Subwoofer in Black - 15", 1,800W Max Power, 900W RMS, Dual 4 Ohms, DVC - Premium Car Audio Bass Speaker Great for Low Frequencies and High Power Applications (