1 ohm 70hz FMOD, 1 ohm 100hz FMOD, 2 ohm 70hz FMOD, 2 ohm 100hz FMOD, 4 OHM 70hz FMOD, 4 OHM 100hz FMOD, Full Range 1 Ohm SubSonic FMOD, Full Range 2 Ohm SubSonic FMOD, Full Range 4 Ohm SubSonic FMOD,