Model : XLR-6639S Detail : 165mm 3-way Titanium loudspeakers � Freq.Resp.: 55Hz-23,000Hz � Sensitivity: 90dB/w*m (SPL) � Normal Impedance: 4 Ohms � Continuous Power: 140 rms � Peak Power Input: 280 Watts � Recommended amplif.: 5-70 rms