series woofers midrange driver tweeter frequency response nominal input power maximum ... input power sensitivity crossover frequencies impedance dimensions w xhxd weight 9502 ... series woofers midrange driver tweeter frequency response nominal input power maximum ... input power sensitivity crossover frequencies impedance dimensions w xhxd weight 8900 ... /7900 series woofers tweeter frequency response nominal input power maximum ... input power sensitivity crossover frequency impedance dimensions w xhxd weight 8900 ... /7900 series woofers tweeter frequency response nominal input power maximum ... input power sensitivity crossover frequency impedance dimensions w xhxd weight ns- ... 9900 dual 16 cm aluminium cone 13 cm aluminium cone 2.5 cm hard dome 45 hz ... x 371 mm 25.5 kg/unit ns-9502 dual 16 cm cone 13 cm cone 2.5 cm balanced-dome 40 ...