Floor speaker effective output 500 watt system 3 way system principle passive frequency response 20 20000 hz sensitivity 88 dbmw impedance 8 ohm power supply passive speaker enclosure bass reflex number of tweeters 1 treble chassis 25 mm number of midbass drivers 2 bassmidtone chassis 76 mm number of subwoofers 1 bass chassis 165 mm speaker terminals clamp contacts width 250 mm height 120 mm depth 1 035 mm weight 71 kg area of use