Cadence S2W12-D2 12 inch Dual 2 Ohm Voice Coil Subwoofer S2W12-D2V2 - Cadence 12" 600W RMS Dual 2-Ohm Subwoofer RMS Power Range : 600 Watts | Peak Power Handling: 1200 Watts Impedance: 2 Ohm Frequency response: 25-500 Hz Mounting Depth: 6.50"