When you have no space for bass, our Prime R2 12" shallow subwoofer comes to the rescue, delivering big bass in a tight space The 12” R2SD4-12 subwoofer handles 250 Watts RMS / 500 Watts Max and the 4-ohm dual voice coils provide awesome installation flexibility Stamp-cast baskets feature spider venting typically reserved for traditional depth mounted models to keep the motor cool! The R2 Shallow subwoofers are optimized for sealed enclosures with a mounting depth of 3.602 inches and a cutout diameter of 11.25 inches Famous Rockford Fosgate build quality with a full 1-year warranty