Features 2.5" High Temperature 4 Layer Voice coil Compressed Paper cone Double Stitched High Excursion Foam Surround Stamp-cast basket PVC Mounting Gasket Large Gauge Spring Terminals Protective magnet band Specifications Nominal Impedance : 4+4Ω Speaker Sensitivity : 84dB Nominal Music Power : 750 Watts Maximum Music Power : 3000 Watts Dimensions Overall Diameter: 10.67"/ 271 mm Mounting Depth: 5.91"/ 150 mm Cutout Diameter: 8.92"/ 226.67 mm TS PARAMETERS Resonant Frequency (fs): 32.7 Hz D.C. V