I don't see how. Ohm's are a measurement of Resistance (heat), The whole voice coil would have to be replaced which would entail, removing the soft parts like JL said.
Alright, well pull it out and on one of the four spokes it should have a sticker that says "Treo Engineering SSi 12.XX" and then you will know what you have. Id check out what you have before you start worrying about an amp.