XL The XLm4 is the next generation of our most award winning driver. The XLm4 has aN added pole vent : redesigned top plate and T yoke: larger magnets wrapped in a stylish motor boot an 8 layer flat wound voice coil: upgraded cone and surround. We are always looking to make great even better and the XLm4 is again a step in that direction. Anyone looking for a subwoofer that not only sounds great but is a beast in the SPL lanes: look no further: you have found what you have been searching for. Sub Size 10"       Mounting Depth 8.25"       Mounting Hole Diameter 9.25"       Outside Driver Diameter 11.0"       Motor Width 8.75"       Weight 56lbs       VC Diameter 3"       Displacement .18³ ft       Magnet Weight 50lbs       Power Handling RMS/Peak 2200 / 4400       Impedance (Ohm) D.7/D1/ D1.4/D2       Sd 314.00 cm²       Vas 12.42 liters       Cms 0.085 mm/N       Mms 171.77 g       Fs 41.7       BL BL 22.73 N/A       Re 3.98 Ohm       Le 5.2mH       Qms 11.24       Qes 0.35       Qts 0.34       Xmax 26 mm       Ref SPL @ 1 watt 85.9 dB       Suggested Sealed N/A       Suggested Ported  1.0³ ft         XL SUB       Key Features • Extremely rigid non-pressed paper cone assembly • Multilayered polymer foam surround • Polypropylene dust cover with DC logo • Quad 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 Stealth Coil