Features 1" Aluminum Compression Style Tweeter Element Rated Cone Design Bi-Ribbed Treated Cloth Surround 1.5" High Output Til Midrange Voice Coil Protective Grill Included. Specifications Dynamic Power Handling: 700 watts Nominal Power Handling: 350 Frequency Response: 85Hz - 18KHz Impedance:4Ω Sensitivity: 102.9dB DIMENSIONS: Mounting Depth: 78.7mm Cutout Diameter: 175.69mm Description