Why do you think Bi-Wiring improves the sound ?

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. 

Here we go again with insecurity of. The audiophile 
This remind me of the series of Tarzan and the witch doctor does the electrician are certified?does he pass
the board?come on this is the kind of person of the bunch that think his ability is unquestionable with no knowledge what is doing and the worse is trust your
gear to them to perform barbaric repair enough lets get to the point first the dedicated ac circuits from the
rest of the of your home is to cancel noise from the appliance from your house like frog air cond microwave is audible and that you could hear in your
hi end gear take an oscilloscope and test your ac outlets and detect for noise in the line of voltage and see the wave is with noises in different Fq that one 
number two copper and silver and gold are the best conductor and have their advantage in the spectrum 
I use Siemens breaker and ac outlets and solid core
copper and a separate Ground rod isolated for protection and keep safe your gear and also improve 
your sound quality of your system if you have an apéndice remove you go to the surgeon not to the witch doctor unless your electrician use trump desinfectant to clear your your ac anomalies go ahead I am a electrical eng with 50 years experience 
and also an audiophile when you hire somebody be sure is a certified profesional not a street barber

Well tabonuco  could you reword that in English please? 

danvignau

No I did not add speaker posts , have not modified the cross over boards .
 The question was does bi-wiring inprove the sound ?
I should have asked if bi-cabling or 2 seperate runs of cable sound better ? especially if you used one cable for the positive and the other for the negative posts  ( have any of you tried this set up ? )

My speakers have 2 crossover boards ,
one for the bass and the mid/tweeter is seperated on one board ,
sharing the speaker wire input , easy splitting for bi-wiring .