Hi Albee,
No, you can't bi-amp the M22ti's. Even in the case of the M60's and M80's, which do have separate terminals for the low- and high-frequency sections of the crossover, it's at best a quasi-biamping arrangement.
In true biamping, you bypass the speakers crossover entirely and use an outboard electronic crossover, selecting your preferred crossover frequencies, slopes, and balancing hi- and low-frequency levels with the outboard box's controls.
In my experience, it benefits only large professional control-room monitoring systems that are capable of very high sound pressure levels.
I disapprove of biamping for consumer speakers because it puts control of the spectral balance into the hands of the consumer, undoing the careful balancing of drivers and crossover components by the speaker engineer.
Regards,
