Pyramid PMBH1539 500-Watt 2-Way 15'' Speaker Cabinet 400W Max 2-Way Speaker System Freq Resp: 45 Hz19 Khz Sensitivity: 101 Db @ 1W/1 M Heavy-Duty Construction With Reinforced Corners 500W Max 2-Way Speaker System Freq Resp: 45 Hz19 Khz Sensitivity: 101 Db @ 1W/1 M Imp: 8