I have not personally tried it but the specs for the amp say that it is rated, "Up to 500W RMS (continuous) power @ 2 ohms, up to 300W RMS power @ 4 ohms and up to 350W @ 1 ohm. It is a 2 ohm stable amplifier and should not have any trouble driving a 2 ohm sub. My experience with Alpine is that they don't over estimate their specs.
CEA-2006 Power Ratings
CEA-2006 Power Rating: 300W RMS x 1 (4-ohm, 14.4V at <1% THD+N)
RMS Power Ratings
Per channel into 4 Ohms: 300W RMS x 1 (14.4V at <1% THD+N)
Per channel into 2 Ohms: 500W RMS x 1 (14.4V at <1% THD+N)