M4 XL SPL 12 D1 - DC Audio 12" 2200W RMS Dual 1-Ohm Subwoofer. 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.
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