RMS Power: 300W MAX Power: 600W Frequency Response: 76-6.8KHz Impedance: 4 ohm Sensitivity: 96 dB Materials Surround: Cloth Edge Frame: Red Steel Basket Cone: Non-Pressed Paper Cone Magnet: Ferrite Voice Coil Wire: CCAW Measurements Voice Coil Size: 2″ Magnet Weight: 40 oz. Mounting Depth: 4.06″ (103mm) Cut-Out Dimension: 9.05″ (230mm)