Woofer 6-1/2" polypropylene / kevlar Tweeter 1" ferrofluid cooled silk dome Power handling 120Watts Max / 35Watts RMS Frequency response 50-20,000Hz Sensitivity 87dB@1W/1M Impedance 8Ohms Dimension 287x203x85mm 11-5/16"x8"x3-3/8" Cutout 264x180mm / 10-3/8"x7-1/16" Mounting depth 82mm / 3-1/4"