The Rockford Fosgate R2D2-10 10 inch subwoofer is one that many car audio enthusiasts can depend on when it comes to providing deep bass at an affordable price. The Dual Voice Coil provides awesome installation flexibility. These drivers can pump out the bass due to their mica injected polypropylene cone, and their stamp-cast baskets with spider venting - typically reserved for more expensive models - keep the motor running cool! These R2 subwoofers are optimized for sealed and vented enclosures.