advantage:
nice improvement sa sound quality because of the separation of the HF and the LF,dont forget to remove the metal jumper sir. (though slight lang kasi same amp and power supply pa rin naman, better ang bi-amping).
you can backread the thread of fellow pdvd markymark with his experiment using his Wharfedale 155 floorstanding speakers on bi-wiring and bi-amping. this is the thread title: Wharfedale 100 series.
disadvantage:
more wires means more expense and more clutter,hehe. though mura lang naman ang extra wires.just try it sir,then balitaan mo kami.