Size 6.5″ Design 6.5″ 3-Way Coaxial System Tweeter Design 42mm Tweeter Composition Pulp/PET Woofer Composition Carbon and mica reinforced IMPP Woofer Surround Elastic polymer Woofer Magnet Composition Ferrite INSTALLATION SPECIFICATION Max. Music Power (Nominal) 320W MAX (70W Nom) Frequency Response 37Hz – 31kHz (-20dB) Sensitivity (1W/1 m) 91dB Impedance 4Ω Mounting Depth 48mm Cut-Out Dimensions 144mm Grills Included Yes