T1D212 - Rockford Fosgate 12" 800W RMS Dual 2-Ohm T1 Power Series Subwoofer. 12" Dual 2 ohm T1 Power Series Subwoofer. Impedance: Dual 2 ohm. Double stack ferrite magnet structure. Embedded copper heat sink shorting ring reduces back EMF (Electro-Magnetic Force).
eBay