you can, but you'd have to buy some new terminal posts which will have individual connectors for your tweeter and low/mid driver ( this will require some modifications to the back of the speaker). You would also have to take out your existing passive crossover and connect your tweeter and low/mid directly to the terminal posts.
Besides the modification to the speakers you'd have to get an active crossover and then use individual amps for tweeter and low/mid drivers.
Theoritically you would need 4 amps for stereo bi-wiring. You have to be careful about the phase coherence of the active cross over also.