Memphis M series subwoofers are designed to produce accurate and powerful bass. These subwoofers take the research behind our massive MOJO woofers and refine it into an acoustically accurate balanced subwoofer to maximize your listening experience. The double stitched rubber surround and polypropylene cone are two elements of the M7 that were based off their big brothers. This subwoofer utilizes a 2.5" aluminum voice coil to resulting in a massive increase in durability during extended high volume play. Features Vented cast aluminum basket 2.5" aluminum voice coil 120oz magnet Polypropylene cone Double stitched rubber surround Specifications: Size (in): 12" RMS Power (w): 750 Peak Power (w): 1500 Sensitivity (dB) (1 Ohm/2 Ohm): 84.5/85.3 Magnet Size (Oz): 120 Mounting Depth (in): 7.5 Cut Out Diameter (in): 10.81 Voice Coil Diameter (in): 2.5