Combo system principle active power 50 watt woofer size 12 inch design 2 way system construction wireless speakers lf 1x 8 hf 1x 3 dimensions 279 x 381 x 438 mm weight 1116 kg power handling peak 50 watt frequency response 65 20000 3db hz connections microphone bluetooth usb types of connection 3 5mm trs usb case material bass reflex operating time 75 h