Features High Efficiency Component System 6.5″(165.1mm) Component Loudspeakers Ultra Light Weight Paper Cone High Reaction Ribbed Surround 1″(25mm) High Temperature Voice Coil Die-Cast Aluminum Anti Resonance Basket 1.25″(28mm) Aluminum Dome Tweeter with Resonance Chamber Multi-Mount Tweeter Flange 12dB Passive Crossover Network Protective Grills Included Specifications Max Power 500 Watts Nominal Power 250 Watts Music Program 75 Watts - 150 Watts Frequency Response 80Hz - 21KHz Impedance 4Ω Sen