i've never seen a 2 ohm cab before, only ever 4 or 8 ohm cabs.
if that actually are 2 ohms then you would have to have a series cable made up so that together they present a load of 4ohms together.
if you ran these cabs normally, or even one at a time, you'd be exceeding the minimum load and could blow up your amp.
i'd have another check though because i very much doubt they're 2ohms each.