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     15"   Mounting Depth     8"   Mounting Hole Diameter     14"   Outside Driver Diameter     15.7"   Motor Width     7"   Weight     21.5lbs   VC Diameter     3"   Displacement     .18³ ft   Magnet Weight     18lbs   Power Handling RMS/Peak     900 / 1800   Impedance (Ohm)     D1/D2/D4   Sd     823cm²   Vas     84.88 liters   Cms     0.09 mm/N   Mms     295 g   Fs     30.9   BL     17.2 N/A   Re     3.6 Ohm   Le     3.5 mH   Qms     8.18   Qes     0.706   Qts     0.65   Xmax     23 mm   Ref SPL @ 1 watt     87.3 dB  (90.8@2.83V)   Suggested Sealed     2³ ft   Suggested Ported      3.0³ 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