sell column loudspeaker

Model : ZT-20G-50G
Rated Power :40-100w
Line Voltage: 70-100 v
Sensitivity: 91dB
Frequency Response : 90-18000HZ
Londspeaker : 166x2/3/4/5mm 
Material: ABS
Dimensions : 520(736/952/1168)mm
Weight: 4.6/6.4/7.9/9.2KG
Application : widely used in in Hotel,emporium ,school ,auditorium,gymnasium ,exhibition center ,park ,and so on .