Floor speaker power rating 75 watt effective output 300 watt system 3 way system speaker system 20 stereo principle passive frequency response 32 32000 hz sensitivity 93 dbmw impedance 8 ohm crossover frequency 2400 hz recommended amplifier power 20 150 capacity 44 litres power supply passive colour black front colour black cabinet surface oak design front firing subwoofer speaker enclosures bass reflex removable speaker cover number