my firend want to buy this amp those are spec. 70 watts RMS x 4 @ 4 ohms + 210 watts RMS x 1 @ 4 ohms 85 watts x 4 @ 2 ohms + 420 watts RMS x 1 @ 2 ohms
but here is the thing: he got back and front speakers at 4 ohms and he wants to get the sub at 2 ohms would it work??? and would it then give 420 watt to the sub??