I just picked up a pair of Polk Audio RTi4 bookshelf speakers and when I got them home, I discovered they are set up for bi-wiring. I took a quick look at the back of my receiver (Panasonic SA-HE100K) and saw that it has two sets of speaker inputs (A&B.) The Panasonic documentation does not specifically mention bi-wiring but does reference how to set up 2 sets of speakers. Now for my questions... Can I bi-wire these speakers using this receiver? Will bi-wiring make a noticable difference? Does the fact that only two speakers out of seven being bi-wired make a difference?