Pa speaker pa monitor series electro voice zlx principle active power 1 000 watt woofer size 15 inch design 2 way system speakers lf 1x 15 hf 1x 15 dimensions 685 x 423 x 383 mm weight 173 kg noise level 127 db impedance 8 ohm frequency response 55 18000 hz sensitivity 96 dbmw dispersion 90 h x 60 v connections link thru types of connection 3 5mm trs xlr amplifier type class d crossover frequency 1700 hz