If the adapter has 1-15P, you'd have to power a 1/5-15R with 240 volts, and that certainly has the obvious hazards. Unless one can find a split-phase output step up transformer or isolation transformer, then the option I see is rigging up a box like gfretwell did for audio, but for power instead with power rated transformers. But if you are going to do that, you could just as well do it with a 60-0-60 volt output (split phase with 120V line to line). Be sure to use non-polarized 1/5-15R. Recycle an old T-slot that's still in good condition?
