SPECIFICATION Mode DSP-10 DSP-20 Built-in Power Amplifier 10W 20W Full-range Speaker / HF Driver 5"x1;2"x1 6.5"x1;2.5"x1 Normal Power 10W 20W Max Power 20W 40W Line Voltage 110~250V 110~250V Sensitivity(1m,1W) 90dB 90dB S/N ratio >80dB >80dB Freq. Resp. 20Hz~20KHz 20Hz~20KHz Dimensions 200x185x170mm 330x221x190mm Weight 7kg 8kg