Pyramid PMBH1239 300-Watt 2-Way 12'' Speaker Cabinet 400W Max 2-Way Speaker System Freq Resp: 50 Hz19 Khz Sensitivity: 97 Db @ 1W/1 M Heavy-Duty Construction With Reinforced Corners 400W Max, 2-Way Speaker System Freq Resp: 50 Hz-19 Khz Sensitivity: 97 Db @ 1W/1 M Heavy-Duty Construction With Reinforced Corners It is a 2 way speaker system, 4000 max. The frequency response is 50 Hz-19 Khz.