Floor speaker series canton gle power rating 150 watt effective output 320 watt system 3 way system principle passive frequency response 20 30000 hz impedances 4 6 8 ohm crossover frequencies 300 3200 hz power supply passive colour black cabinet surface ash housing material mdf enclosure speaker enclosures bass reflex removable speaker cover number of tweeters 1 treble chassis 25 mm tweeter material tweeter tissue number of mid range driv