Fi Car Audio - XV4 Series 18" Subwoofer Dual Voice Coil 2 ohm 1500 Watt RMS

The Xv4 Series of subwoofers is a super tough daily entry level sub. A double stack of wide high strength magnets and a standard high compression pole cap are the foundation for this motor. 4 layer aluminum voice coil yields 27mm of Xmax while keeping the motor force high.

eBay