*4" x 6" (Standard or Metric openings) 2-way Speakers *Power Handling: 120W Max / 20W RMS *Foamed IMPP (Injection Molded Polypropylene) RigiliteTM Composite Cone Woofer *High Energy Strontium Magnet (Woofer) *Butyl Rubber Surround *Mounting Depth: 1-3/4" *Tweeter Protrusion: 1/3" *Sensitivity (Efficiency): 89dB (1W/1m) *Frequency Response: 45 - 32,000Hz *Cutout Dimensions: 4-7/8" x 2-7/8" *Impedance: 4 ohms *Latex Treated Conex Damper *Glass-Imide Voice Coil Bobbin *CCAW (Copper-Clad Aluminum Wire) Long Voice Coil *3/4" Aromatic Polyamide Fiber Soft Dome Tweeter with Neodymium Magnet and Magnetic Fluid *Custom Fit US / European Compatible Design Basket