Features 3.0″ Anodized aluminum high temperature voice coil Non-Pressed paper cone Double-stitched reinforced foam surround Dual poly-cotton dampeners Die-cast aluminum vented basket Rubber gasket trim ring Large gauge compression terminals Protective magnet cover Specifications Dynamic Power Handling: 2500 Watts Nominal Power Handling: 1250 Watts Impedance: Dual 4Ω Voice Coil Resonant Frequency (fs): 31.202 Hz D.C. Voice Coil Resistance (Re): 2 x 3.2Ω Mechanical Quality Factor (Qms): 3.612 Elec