Pa monitor principle passive power 500 watt woofer size 12 inch design 2 way system constructions full range coaxial speakers hf 1x 1 lf 1x 12 dimensions 480 x 380 x 500 mm weight 18 kg power rating rms 250 watts noise level 123 db impedance 8 ohm frequency response 65 20000 hz sensitivity 98 dbmw type of connection speakon case material bass reflex housing material mdf