Memphis Audio 12" 1 Ohm or 2 Ohm Selectable Subwoofers 2 Pack Memphis Audio created the M7 Series M71212 12" subwoofers for high-performance bass reproduction. The polypropylene cone has the stiffness to maintain high levels of accuracy, while its double-stitched rubber surround helps to maximize and control excursion. The vented cast-aluminum basket keeps things cool, and virtually eliminates resonances that can color your bass. The triple 2.5" aluminum voice coils combine with a 120-ounce magnet gives this subwoofer the ability to handle up to 750 watts RMS and reach 1500 watts max power. Easy-to-use color-coded jumpers allow you to wire the sub for 1 or 2 ohms for system flexibility, great news if you have a high-performance mono sub amp. Features 750W RMS/ 1500W Max Each Subwoofer Sensitivity - 84.5dB @ 1 Ohm/ 85.3dB @ 2 Ohm Magnet Size - 120 Oz Mounting Depth - 7.48in Cut Out Diameter - 10.78in 1 Ohm or 2 Ohm selectable impedance 2.5" aluminum triple voice coil Vented cast aluminum basket Double-stitched rubber surround DVVC Direct vent voice coil cooling 120oz magnet Lightweight polypropylene dust cap Reinforced spider Folded Surround for increased excursion without sacrificing effective surface area This listing is for two(2) M71212 Selectable Subwoofers