RMS Power : 120 Watts,MAX Power : 360 Watts,Resonance : 68 Hz,Nominal Impedance : 4 Ohms,Qts : 0.65,Usable Frequency Range : 58Hz - 20 kHz,Sensitivity : 88dB,Ferrite Magnet,Voice Coil Diameter : 25.4mm KSV,Mid Range (6.5") Physical Specifications:Outer Diameter : 6.83",Basket Diameter : 5.75",Mounting Depth : 2.36",Total Depth : 2.65",Tweeter Physical Specifications:Outer Diameter : 2.13",Inner Diameter : 1.85",Mounting Depth : 0.79",Cross Over Physical Specifications:Width : 4.13",Length : 2.91"