The new design and enhanced performance of the R2-Series subwoofers offer deeper bass and tighter bass control compared to the previous generation. Updates to the new generation include larger, double-stacked magnets, an integrated Faraday ring, and a Kevlar-treated cone. All of these updates equal unmatched durability and reliable performance, even at high volumes. The R2-W10D2 handles up to 750 watts RMS, so it's ready for your high-powered amp. Its dual oversized 2-ohm voice coils allow you to draw maximum power from your mono amp. Since it works well in sealed or ported enclosures you'll enjoy your music the way you like to hear it. | Alpine | | R-Series Dual 10" Voice Coil 2-Ohm Subwoofer | Black | Best Buy