SA-10 D2 - Sundown Audio 10" Dual 2-Ohm SA Series Subwoofer Sub Woofer Size:10 | RMS Wattage: 750 + | Voice Coil: Dual X Ohms | Sens (1w/1m): 84.22 Sens (1w/1m): 84.22 | 19.0mm XMax by 70% BL method oneway (38.0mm peak to peak) Overall Diameter w/ Gasket: 10.5" | Top Mount Depth: 6" | Cutout Diameter: 9 1/4" Displacement: 0.10 ft^3 | FS (Hz): 33.96 Recommended Sealed Box:.8 ft^3 (Yields F3 of 46 Hz) | Recommended Ported Box: 1.25 ft^3 (Tune to 35Hz, yields F3 of 28