Type.: HS-235 Spec.: Technical Summary HS-235 WOOFER: R.M.S(THD10%) 1.5W S/N Ratio 48dB Frequency Response 50Hz-180Hz Input Sensitivity 300mV Input Impedance 20K(ohm) Speaker Driver 4"*1 Dimension 150mm*200mm*210mm SATELLITE : Speaker Driver 3"*2 Speaker Impedance 4 ohm Frequency Response 150Hz-18KHz R.M.S(THD10%) 0.8W*2 Dimension 100mm*147mm*92mm