SA-8 V.3 D2 - PAIR Sundown Audio 8" 500W Each RMS Dual 2-Ohm SA Subwoofer Pair of SA-8 V.3 D2 500W (Each) RMS Dual 2-Ohm SA Subwoofer Cut-out Diameter: 7.32" Gasket OD: 8.62" Mounting Depth: 6.34"