HS-605R.M.SPOWER:7W+2Wx5S/NRatio:49dBInputSensitivity:270MVFrequencyResp***e:20Hz~20KHzSpeaker:21/2'x5,4'x1MaxOutputPower:8W+3Wx5InputImpedance:47KΩDimension:W150xD190xH245MMDimension:W85xD80xH108MM)