Rockford Fosgate R2D4-12 Prime R2 DVC 4 Ohm 12-Inch 250 Watts RMS 500 Watts Peak Subwoofer Features 2 inch copper clad aluminum voice coil Stamp cast frame structure Integrated PVC trim ring 12-inch, dual 4-ohm subwoofer with 500 watts maximum power handling (250 watts RMS) Mica injected polypropylene cone with poly-foam surround Linear spider with embedded 16 AWG tinsel leads StampCast basket with integrated spider venting One-year limited manufacturer's warranty