Just saw this now, Sat. Took a quick look at the links and suppose it's a similar idea to the M3, i.e. the tweeter has a filtered rolloff but the woofer just rolls off naturally. As far as bi-wiring, this design wouldn't change the basic point that, as Ken implies, the only difference is that you have two wires running as the signal leaves the amp terminal instead of the two wire paths beginning just inside the speaker input terminal.

-----------------------------------

Enjoy the music, not the equipment.