Features 4x6” 3-Way Speaker Polypropylene Cone Piezo Super Tweeter 10 oz. Ferric Oxide Magnet Rubber Surround Specifications Nominal Impedance : 4Ω Speaker Sensitivity : 89dB Frequency Response : 75Hz - 25KHz Nominal Music Power : 40 Watts Maximum Music Power : 130 Watts Dimensions Overall Diameter: 4x6"/101.6 x 152.4 mm Mounting Depth: 1.8"/45.72 mm Cutout Diameter: 3.5x5.6"/88.9 x 142.24 mm Description