Level 3 The level 3 sub is the ultimate daily driver sub. It puts out the low lows with lots of output designed for sealed or ported enclosures. The Level 3 sub is a triple stacked FEA optimized motor wrapped in a magnet boot: chrome top plate and T yoke. The deep gap offers more X-max for a total of 22.5mm. This sub also comes with dual upgraded progressive spiders: cone: surround: 3" voice coil: cast basket: push terminals: and upgraded sewn down lead wire. We give the Level 3 a power rating of 900w RMS/1800w peak. Sub Size 10"       Mounting Depth 6.25"       Mounting Hole Diameter 9.35"       Outside Driver Diameter 11"       Motor Width 7"       Weight 20lbs       VC Diameter 3"       Displacement .15³ ft       Magnet Weight 18lbs       Power Handling RMS/Peak 900 / 1800       Impedance (Ohm) D1/D2/D4       Sd 324cm²       Vas 13.16 liters       Cms 0.09 mm/N       Mms 190 g       Fs 38.5       BL 17.2 N/A       Re 3.6 Ohm       Le 3.5 mH       Qms 7.66       Qes 0.567       Qts 0.528       Xmax 23 mm       Ref SPL @ 1 watt 83.1 dB (86.6@2.83V)       Suggested Sealed .65³ ft       Suggested Ported  1.0³ ft         LEVEL 3 SUB       Key Features • Extremely rigid non-pressed paper cone assembly • Multilayered polymer foam surround • Polypropylene dust cover with DC logo • Dual 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 • Dual 4 ohm 3” Hi-temp Aluminum voice coil wound on black anodized voice coil former