51 speaker system transmission mode cable number of speakers 6 components 1x subwoofer 2x surround 1x centre 2x front impedance 6 ohm front speaker types magnetically shielded bass reflex system front enclosure 1x 80mm midrange subwoofer music handling capacity front 120 watt frequency range front 80 20000 hz dimensions front wxhxd 101 x 175 x 116 mm front weight 07 kg central speaker types bass reflex system magnetically shielded central enclosure