12'' Professional High Quality Subwoofer Speaker Power:2000W Impedance:4 ohm 1PC/INNER BOX,2PCS/OUTER CARTON Detailed description:SW12-21SIZE: 12” SUBWOOFER MAGNET SIZE: 180X95X20 ASV COIL RUBBER EDGE DOUBLE TERMINALIMPEDANCE: 4 OHMMAX POWER: 2000WATT1PC/INNER BOX,2PCS/OUTER CARTON N.W.17KG,G.W.19KG With CE, RoHS, ISO9001 SW12-12 12" Aluminum Frame 2000W Subwoofer Car Speaker