Product Code: 29025 Price: Check Latest a/d/s/  4 ohm DVC Subwoofer  - High Sound Quality SPECIFICATIONS          R10s R12s          Series Parallel Series Paralle Nominal Impedance      8 ohm 2 ohm 8 ohm 2 ohm   Sensitivity      83.5 dB 89.5 dB 85.2 dB 91.2dB FS (free air-resonance)     40.1 Hz 30.97 Hz      Power (continuous)      500 watts 500 watts Power (peak)      1000 watts 1000 watts Outside Diameter     10.75 inches 12.5 inches Mounting Diameter     9.25 inches 11.25 inches Mounting Depth     5.25 inches 5.5 inches Basket Displacement     0.07 cu ft 0.08 cu ft Voice Coil Diameter     2.5 inches 2.5 inches Enclosure Recommendations     R10s R12s Sealed Enclosure     0.75 Cu Ft 1.35 Cu Ft Vented Enclosure     1 Cu Ft 1.35 Cu Ft Port Diameter     3 inches 4 inches Port Length     13 inches 17 inches