Bi-Wiring

IMHO the main benefit in biwiring speakers using two wires from your amp going to four connectors on the speaker is that you eliminate the need to use a piece of metal between the two positive and two negative connectors on your speaker which is a good thing. Whether you will actually hear the difference is a different issue. I haven't. The benefits of biwiring have been discussed often - I’ve always been attracted to the KISS theory and don’t recommend bi wiring. It has been alleged that some major speaker manufacturers, at least initially, demurred on having two sets of connectors because they thought they were not beneficial but subsequently started installing them due to public demand.

I don't know why I didn't think of this but for the adventurous amongst you bi-wiring folks who like to play with your sound you can try two different things, one to affect imaging, one to affect tone. Re tone, use two different types of cables, re imaging, reverse phase on one set of connectors. Many years ago I did play with the different types of cables to see if I could change the tone of my system - I've never tried playing with phase, but I could see someone who wasn't focused on imaging specificity might like the effect of a vague large soundstage. Good for an otherwise boring day.:-)

No such thing as 'over kill' I think, but perhaps not at all necessary. :-) But to hear the differences make sure both wires are the same ga. My runs are longer and I have only used 10 ga.

Well I found I could change the tone but the change I obtained was never better, just different. I was trying to tame the higher frequencies of some speakers without really impacting the overall balance. Didn't work but it did, ultimately, lead me to my conclusion that KISS was the best theory. Problem is that now most speakers have dual connectors and I'm left with the jumper issue. FWIW, I have a good family friend who is an Astro physicist (NASA consultant!) and we got to discussing the issues involved in cabling in an audio system (he's not and audiophile) and it was his stressing of the importance of  proper connections, etc, that influenced my thinking. If I were really anal about this I would remove the conectors and go in and hard wire the cables. But in my real world I just accept the issue of using jumpers. Just find the cables that sound the best with your stuff. 

BTW, I note that you are using Belden cables from BJ. I assume 10ga. Good stuff and inexpensive. However, as an alternative if you want a cleaner (or brighter) tonal balance you might try some of the Mogami wire. Its very different and also inexpensive. Its interesting to note that both the 10ga Belden and the 10ga Mogami are multistrand twisted wire. The Belden wires are thicker and the Mogami wires are thinner, and I believe there in lays the reason for the tonal balance differences.  Get a pair for the fun of it and you can even try the mix and match I referred to earlier.