The NEO is a subwoofer built for SPL!! It comes stock with the AR cone and surround .5 stiff spiders and an 8 layer 3" high temp voice coil. Sub Size     15"   Mounting Depth     9"   Mounting Hole Diameter     14"   Outside Driver Diameter     15.7"   Motor Width     8.25"   Weight     33.5lbs   VC Diameter     3"   Displacement     .23³ ft   Power Handling RMS/Peak     2000 / 4000   Impedance (Ohm)     D.7 / D1 / D1.4 /D2   Sd     791.00cm²   Vas      na   Cms     na    Mms     na    Fs     na    BL     na    Re     na    Le     na    Qms     na    Qes     na    Qts     na    Xmax     na    Ref SPL @ 1 watt     na    Suggested Sealed     na    Suggested Ported     3.0³ ft     NEO SUB       Key Features • Extremely rigid AR paper cone assembly • Multilayered polymer foam surround • Polypropylene dust cover with DC logo • 5 8” OD semi cup progressive roll spiders • Dual extra heavy duty interweaved tinsel lead wire • Cast aluminum black frame • FEA analyzed and optimized motor assembly – Fully CNC machined • Rubber mounting gasket • Chrome spring loaded push terminals • Dual 0.7: 1.0: 1.4 or 2 ohm 3" 8 layer hi-temp aluminum voice coil