Centre speaker power rating 70 watt effective output 120 watt system 2 way system speaker system 10 mono principle passive frequency response 70 20000 hz impedance 4 ohm recommended amplifier power 30 100 colour brown cabinet surface walnut housing material mdf enclosure speaker enclosures removable speaker cover closed wall mounting possible number of tweeters 1 treble chassis 25 mm tweeter material tweeter silk tweeter type tweeter calott