The Level 4 m2 was designed to take even more power and get even louder than the m1. With fantastic power handling and smashing lows its hard to beat. The Level 4 sub is a large triple stacked motor with a chrome top plate and T yoke yielding 23.5mm of X-Max. Furthermore, you get the upgraded triple progressive spiders, cone, surround, 3" coil, cast basket, push terminals and upgraded lead wire sewn to the spider. This sub is rated at 1400w RMS and 2800w peak. Sub Size 10"       Mounting Depth 6.25"       Mounting Hole Diameter 9.25"       Outside Driver Diameter 11.0"       Motor Width 7.75"       Weight 32lbs       VC Diameter 3"       Displacement .16³ ft       Magnet Weight 29lbs       Power Handling RMS/Peak 1400 / 2800       Impedance (Ohm) D1 or D2       Sd 324cm²       Vas 12.42 liters       Cms .085 mm/N       Mms 184.5 g       Fs 40.2 Hz       BL 19.18 NA       Re 3.82 Ohm       Le 3.78 mH       Qms 7.77       Qes .49       Qts .461       Xmax 23.5 mm       Ref SPL @ 1 watt 84 dB       Suggested Sealed .75³ ft       Suggested Ported 1.0³ ft         LEVEL 4 SUB       Key Features • Extremely rigid non-pressed paper cone assembly • Multilayered polymer foam surround • Polypropylene dust cover with DC logo • Triple 8” OD semi cup progressive roll spider • Extra heavy duty interweaved tinsel lead wire sewn to spider • Cast aluminum black frame • FEA analyzed and optimized motor assembly – Fully CNC machined • Rubber mounting gasket • Chrome spring loaded push terminals • 3” Hi-temp Aluminum voice coil wound on black anodized voice coil former