Why do you think Bi-Wiring improves the sound ?

I think it depends on speakers ... I have had Quad Kef, Falcon LS3, PMC and now Tannoy. 

The biggest difference is the Tannoy speakers where it was immediately clear almost like jumping up a model. On the rest it has been marginal and sometimes pretending to yourself it made a huge difference. 
So borrow some wire - try and then decide.

Out of interest my Harbeths had one terminal as it is something the designer thought worked and there was definitely a fashion for biwire speakers at one point that wasnt always sonically warranted except buyers demanded it and manufacturers supplied ....

I have Larsen 6.2s run with an Exogal power DAC, Comet and Ion. I hear absolutely no difference between bi-wire and single speaker cable, and in fact one reviewer of the speakers said his sounded better with the single wire. I did keep the bi-wires on, just in case....

I think it will change the sound, whether or not that improves the sound is subjective.

I run an old pair of Acoustat 1100's which are bi-amped and bi-wired as the demands of the woofer modules and panels are quite different.  It did make a difference.

vair68robert.  So!  You disconnected the speaker posts, modified the crossover, added more speaker posts, yet you are convinced that the difference you think you hear is the bi-wiring.  Hmmm.