The Boss Audio 12 Inch Dual Voice Coil Subwoofer is a car audio sub that's awesome for medium to high power applications. The dual voice coil provides more wiring configuration possibilities. When you add subwoofers, the wiring configurations can be easily matched to optimize the amp's power output and the power handling. The polypropylene and paper cone is sturdy and has a rubber surround for the best sound. It's best suited for 0.65 cubic feet sealed or 1.5 cubic feet ported enclosures. Use a sealed enclosure for a great, pounding bass or a ported enclosure for a solid, tight bass. Get the sub with lots of wiring configuration possibilities and the ability for a booming bass or a tight one, the Boss Audio 12 Inch Dual Voice Coil Subwoofer.