Multimedia speaker Output power:30w(sub), 15w*2(rms) Pmpo:880w Dribers:5.25" subwoofer, 3"*2+1.5"*2 satellite, Inoedance:4¬+ Frequency response:40hz~20khz S/n:fª80db Power source:ac 220v/50hz Subwoofer:l300*w170*h301(mm)satellite:l115w114*h170·+mm·¼ Inner box dimension(mm):l380*w225*h470(mm) Carton dimension(mm):l775*w467*h488·+mm·¼pc/carton:4