159 seems like an odd number, and misleadingly precise. Really, it depends on how old it is. Sunn 412S cabs from the mid seventies probably handled around 150 watts. At that level, they could handle any amp Sunn made at the time. True, the Coliseum series could put out 300 watts, but only at 2 ohms. One 8 ohm 4x12 could easily handle all it could dish out into that impedance. Even a 4 ohm cabinet would be unlikely to be blown, and two of them would make it almost impossible.
Really, really loud, too...