The KMX 2 ohm dvc's 12's run at 4 ohms sound great although I have them in a sealed enclosure 1.45 cu. ft. (per sub) they bang!!!!
800 watt RMS Max 1600 I think it's more like a peak of 1100.
then again I don't have them in the recommend enclosure 2.4 cu. ft. ported (I don't have the space) but I am giving them 1200 watts RMS and the sound is DAM GOOD!!! Pics comming soon, all an all not a bad sub for the price.