Hifonics vs. Power Acoustik

[gunz4me 10+ year member]

also you cant run those at 2 ohms unless you get a 2 channel or run just a single sub

His options are 2 ohms stereo, 8 ohms stereo, 4 ohms mono, and 1 ohm mono. There are more configurations, but they would include running one set of coils off of each sub instead of both sets of coils, and I highly advise against doing so.