Features 2″ (50.8mm) 4 Layer Voice Coil Injected PP Cone with rubber Surround Precision Excursion design High Strength Ferrite Oxide magnet Anti-resonant stamped steel basket with radial venting Linear dampening Compression Speaker Terminals Specifications Dynamic Power Handling: 1200 Watts Nominal Power Handling: 600 Watts Impedance: Dual 4Ω Voice Coil Resonant Frequency (fs): 39.744Hz D.C. Voice Coil Resistance (Re): 2 x 4Ω Mechanical Quality Factor (Qms): 2.802 Electrical Quality Factor (Qes)