Model: PRO-X6.4BM Type: Midrange Loudspeaker Size: 6.5" RMS Power: 250W MAX Power: 500W Frequency Response: 106-17KHz Impedance: 4 ohm Sensitivity: 93dB Materials Surround: Cloth Edge Frame: Red Steel Basket Cone: Non-Pressed Paper Cone Magnet: Ferrite Voice Coil Wire: CCAR Diameters Voice Coil Size: 1.5" Magnet Size: 30 oz Mounting Depth: 2.72" (69mm) Cut-Out Dimension: 5.7" (145mm)