Active speaker pa speaker series behringer eurolive principle active woofer size 15 inch design 2 way system speakers hf 1x 135 lf 1x 15 dimensions 713 x 427 x 313 mm weight 177 kg power handling peak 1 000 watt frequency response 45 20000 hz connections usb types of connection xlr6 35mm trs combo xlr usb crossover frequency 2200 hz