... ohmFrequency range60HZ-20KHZDispersion90 degreesSensitivity1W/1m:91dBInputImpedanceColorWhite or BlackUnit Dimensions6.6”L×5.6”W×8.9”H167mm×142mm×227mmUnit Weight1.5 kg ... Dimensions (two pieces in one carton)16.1”L×9.6”W×8.7”H409mm×244mm×221mmADVANTAGE:1,Waterproof design 2 ... facilities and so on 5,Stylish and various sizes available 6,1 year guarantee 7,Simple installation 8,Certificate:CE Payment ...