Multimedia speaker Modern design, wooden made cabinet (mdf) - 6.5 inch woofer driver for extra bass power handling - 2-way satellite speakers, 3.8 inch midrange driver, 1.5 inch tweeter driver - built-in high power philips amplifier, r.M.S.: 50w, p.M.P.O.: 980w - wide range frequency response, satellites: 100hz-20khz, subwoofer: 20hz-150hz - high signal noise ratio, >70db Size and packing(giftbox): 318(l)*318(w)*368mm(h) Gross weight: 7.5kg Carton:656(l)*338(w)*388mm(h) Gross weight: 16.0kg Loadings:20 40 40hq 651sets 1349sets 1581sets