*Sold as each not in pairs. Massive Audio's new Professional Grade- High Efficiency, High Power Mid-Range Speaker designs are a result of years of experience, research and dedication to high professional audio products. Our "M Series" line of mid-range speakers are built to deliver the best quality sound at price points that are sure to make any enthusiast ecstatic. Applications include everything from PA, DJ and Car Audio installations. "On a Stage or in a Car Massive Drives it Home!" Manuals & DownloadsM8 Manual FEATURES 40oz Ferrite Magnet Copper Voice Coil Kapton Coil Former Vented and Extended Core Pressed Steel Basket Paper Cone Cloth Cone Edge Phase Plug Dust Cap SPECIFICATIONS Nominal Basket Diameter 8.2", 210mm Nominal Impedance 8 Ohm RMS Watts 150 W Music Program 280 W Resonance 100Hz Usable Frequency Range 100Hz-7KHz Sensitivity 96dB Magnet Weight 40 oz Voice Coil Diameter 1.5", 38.5mm Resonant Frequency (fs) 100Hz DC Resistance (Re) 5.2 Overall Diameter 8.2", 210mm Baffle Hole Diameter 7.24",184mm Mounting Holes Diameter 0.20" x 0.33",5.2 x 8.6mm Mounting Holes B.C.D. 7.8",198mm Depth 3.62", 92mm Coil Construction Copper Voice Coil Coil Former Kapton Magnet Composition Ferrite Magnet Basket Materials Pressed Steel Cone Composition Paper Cone Cone Edge Composition Cloth Cone Edge Dust Cap Composition Phase plug