Pa speaker active speaker pa monitor series behringer eurolive principle active power 1 260 watt woofer size 15 inch design 2 way system speakers lf 1x 15 hf 1x 175 dimensions 735 x 430 x 470 mm weight 23 kg power rating rms 850 watts noise level 128 db frequency response 40 20000 hz connections microphoneline line types of connection xlr xlr6 35mm trs combo case material vented housing material plastic amplifier type class d