Bi-amping does not change the Ohms of the speakers.
biamping and curent
I am looking for help understanding different biamp options and how they affect current and power, If my speakers are 6 ohm, I understand that with biamping, they are 3 ohm. Is this a problem for the amps? Also what about cable configuration? What is optimum? Do I need two sets of cables? Can I do it with a single biwire?