*Sold as each not in pairs. Massive Audio's proven 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 & DownloadsM6 Manual FEATURES 27oz Ferrite Magnet Copper Voice Coil Kapton Coil Former Vented and Extended Core Pressed Steel Basket Paper Cone Flat Foam Surround Phase Plug Dust Cap SPECIFICATIONS Nominal Basket Diameter 6.5", 166mm Nominal Impedance 8 Ohms RMS Watts 140W Music Program 300W Resonance 270Hz Usable Frequency Range 270-10KHz Sensitivity 96dB Magnet Weight 27 oz Gap Height 0.24", 6mm Voice Coil Diameter 1.5", 38.5mm Resonant Frequency (fs) 270Hz Mounting Holes Diameter 0.19" x 0.28", 5x7mm Mounting Holes B.C.D. 6.06", 154mm Depth 3.3", 84mm Coil Construction Copper Voice Coil Coil Former Kapton Magnet Composition Ferrite Basket Materials Pressed Steel Cone Composition Paper Cone Cone Edge Composition Flat Foam Surround Dust Cap Composition Phase Plug Shipping Weight 4.5lbs, 2.04Kg