Active speaker pa subwoofer series electro voice live x principle active power 700 watt woofer size 18 inch design 1 way system speaker lf 1x 18 dimensions h x b x t 661 x 507 x 574 mm weight 313 kg power rating rms 700 watts noise level 134 db impedance 8 ohm frequency responses 32 130 10 db 42 100 3 db hz dispersion omnidirektional connections stereo link types of connection xlr xlr6 35mm trs combo case material bass reflex