I'm adding Jupper cables and your opinion is ??

Correct. That was my point.

As per those who recommend two separate runs, I completely agree, many manufacturers use a single run with two tails, meaning somehow they splice the second tail into the single run. This of course adds solder and potential disruption of the signal, or at best is not a pure design solution.

Therefor I build mine as single runs, one run for the treble/midrange and a separate cable for the bass. In my design the two are actualy different wire configurations inside the cable. The bass tries to lighten the individual gauges (greater overall) to speed up the leading edge and provide more dynamics over the full frequency design.

What this offers is the ability to maximize the use of two cables, as each set of posts have very different needs in supplying the signal.

In the case here, getting a jumper to match the original full range speaker cable (same design) is an excellent solution. I would run the main cable to the treble/midrange and jump to the bass.

Good Luck,

JD MacRae
Jade Audio, LLC

JD and the others have made some excellent comments, but I would put it a bit differently:

1)There is no well-established technical reason why the wire type used for the short jumper between bi-wire terminals on a speaker will make any difference sonically, assuming the gauge is adequate and good contact is made.

2)Bi-wire vs. single-wire plus jumper can certainly make a difference in many systems, although subjectively the difference may not necessarily be for the better. See the following threads in which people reported an apparent loss in bass when bi-wiring, for which I provided what I believe to be the correct explanation near the end of each thread:

http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1247016622

http://forum.audiogon.com/cgi-bin/fr.pl?cspkr&1247245568

And here is some general background on biwiring and its potential benefits:

http://www.brilliancehifi.co.uk/how-to-bi-wire-speakers.htm

Regards,
-- Al

I strongly disagree with your point (1), remembering the difference between using the bar-type jumper that ProAc supplied with my Response 3s and the foil jumpers from Mapleshade when I was using their cables. I'm not one of those who speak of jaw-dropping differences, but this was something else. I went back and forth between the supplied jumpers and the foil, not believing what I was hearing.

Dave -- I didn't say that perceivable differences would not ever occur, I said that "there is no well-established technical reason" why there should be a difference. A consequence of that being that any possible differences are unlikely to be predictable or consistent across different systems. I should have expressed that more fully in my previous post.

Regards,
-- Al

When you consider just inside of the binding post is whatever type of hookup wire the speaker designer chose to utilize, it is harder to imagine a 6 to 8 inch jumper wire making a huge difference as long as the gauge is adequate. Al is correct, there is a whole bunch of info available here on bi-wiring. Based on your statement regarding a double run, "a price tag of the cable that I'm looking at of about $16,000," I assume the cables you are considering are about $8K per pair. At that level, and considering the quality of your Avalon's, I would probably obtain a pair of the cable manufacturer's own jumpers to be sure you are achieving everything you should be sonically.