Supersonic Supersonic 6"x9" 4-Way Coaxial Speaker System with 800W Peak Power Model: SC-6900 Features Premium Sound Experience 6 x 9 4-Way Speaker 800 Watts Peak Power Tweeter Design: 2.59 Midrange .59 x 2 Piezo Tweeter Woofer Composition: IMPP Woofer Cone Sensitivity: 91dB Frequency Response: 50-2800Hz Impedance: 4ohms Magnet Structure: 30oz Mounting Depth: 3.34 Product Dimensions: 10.43 x 7.28 x 4.72