Model : MB-620CTI Detail : 16cm Component 2-way System Speakers Also Fits 13cm Factory Stocks � Woofer 16cm Carbon Fiber PP Cone � Tweeter 25mm PEI Balanced Dome � Crossover Switchable 6dB/OCT 12dB/OCT � Max Power 180 Watts � Rated Power 45 Watts � Frequency Response 30Hz ~ 58,000Hz � Sensitivity 91dB � Impeadance 4 Ohms