OE-522 5.25" Full-Range Features 5.25" Co-Axial Speaker System OEM Drop in Replacement Design Grey Injection Molded PP/Carbon Fiber Cone Butyl Rubber Surround 10 oz. Motor Structure Shallow Mounting Depth EFF Motor Structures (Efficient Flux Field) Rigid Tooled Basket With Flat Black Finish 0.75" Aluminum Dome Tweeter SEL Tweeter Ring (Sound Expander Lens) 2-ohm System Impedance Specifications Nominal Impedance: 2-ohm Material: Injection Molded PP cone with Carbon Fiber/ aluminum done tweeter Magnet Size: 10 oz Sensitivity (1W / 1M): 88 dB Mounting Depth: 1.95 in Size: 5.25 in Sensitivity: 88 dB Frequency Response: 62 Hz - 21 kHz Power Handling (RMS/Peak): 50 / 150 watts