Why do you think Bi-Wiring improves the sound ?

For those of you who state that you use both sets of speakers posts, because the speaker was designed for bi-wiring:  NO IT WAS NOT!  It was desigined for bi-amping.  Bi-amping separates the current going to the woofers, and to the mid/tweeets.  Bi-ampig does not.  However, See my post from Vandersteen for resistive effects from woofer impedence.  i would like opinions on this, because it makes sense to me, despite my Hokum Meter.

Maybe getting higher quality jumpers rather than using the typically crappy factory ones would be a factor too. 

RE: Whip-Shaw's post quoting Vandersteen.  If you bi-wire doesn't the wire carrying the signal to the bass driver carry the FULL range of the frequency to the bass driver but the treble frequencies are filtered out by the crossover before it gets to the driver?

And doesn't the wire coming from the amp to the tweeter carry the FULL range of frequencies to the crossover and then the low frequencies get filtered out before it gets to the tweeter?    

I do not think bi-wiring or even bi-amping eliminates the crossover does it? It simply directs the signal to different sections of the crossover. One goes to the low pass filter, the other to the high pass filter.  The full frequency of the signal is delivered through EACH of the two wires only to be filtered after it gets to the crossovers.   So the bass frequencies STILL interfere with the treble frequencies in each wire, as they would if only one wire was used.  CHANGE MY MIND. 

I believe RVs argument is something along the lines of having separate wires for the highs and the lows helps prevent back EMF from the large magnet in the woofer from interfering as much with the high frequencies. This I learned from a biwire question at one of his seminars. I suggest asking him directly.

Now bi-amping is a completely different animal. I can get into that.