Features 1/2” (13 mm ) PEI Dome Tweeter Polypropylene Cone Even-Pressure Foam Surround 1” ( 25mm ) high temperature voice coil Rigid Stamped Steel Basket Anti-resonance Basket treatment Proprietary protective magnet band Specifications Dynamic Power Handling 80 Watts RMS Power Handling 40 Watts Frequency Response 75Hz - 20KHz Impedance 4Ω Sensitivity 97 dB Mounting Depth 1.61" (42 mm) Cutout Diameter 3.14" (94 mm) Description Feel the Euphoria with Every Beat!Introducing the Euphoria ES3 40: 4in