Simple Question. Simple Answer?

My vote for this method, if you must use it, is to use separate silver wire as the jumper, simply because when the silver on the surface of the conductor oxidizes over time, it will still conduct electricity (Jeffrey Smith of Silversmith cables feels this even sounds "better" than non-oxidized silver...though I've heard no evidence of the affirmative of this, for it to be true for me). Using the same unbroken copper conductor is great on truely ideal terms. But, copper oxide does NOT conduct electricity............................The best method for single wire connection, is to NOT have two sets of (bi-wire) posts in the first place. A terminated bi-wire cable is the simplest, quickest, and best solution for a bi-wire connection, IMO (and is also the consensus of most of the print reviewers in the past few years).

I use a small length of Audioquest 22 gauge silver wire to bypass the tweeter fuses on my Maggies. It should probably be a little bigger wire than that, but this has worked fine for me. I don't believe there is a solid core silver wire that is any larger, so anything else will be more than one strand (Kimber's is like 19 AWG, but there are 3 strands). If you are going to bi-amp, then you just need a whole other set of single wire speaker cables to run from the amp anyhow, don't you? Just get another set of speaker cables, maybe?

I meant to say that in the mean time, you could just double-up the spade connectors (of two sets of single wire speaker cables) on the amp end, and connect to the bi-wire terminals on the speaker end. I have an HT Pro-9 biwire cable, that I double-up the spades on the single-wire SPEAKER end; this works fine. Just make sure that none of them try to reach across and touch the opposite pole, or there'll be hell to pay from your amp's point of view!!

Many feel that way, David Wilson for example. I at least admire the finish and build quality of his products, more so than the sound/value (and it's not due to wiring aspects IMHO). Dynaudio doesn't believe in bi-wiring either (and I think they know more about speakers than just about anybody on earth). I've never heard the benefit from biwiring, personally....................One thing I am sure of, is that binding posts have more of a sonic signature than either the spade/banana connectors, OR especially the wire. Someone needs to design a composite binding post that uses a small amount of conductor to contact the wire (or connectors), and some hard plastic or non-magnetic, non-conducting material for the screw down and mounting mechanism. This way, cable manufacuters could use the material of their choice for the electric conductor part (it could just be poured in, or form-fitted). TWO CABLE MANUFACTURERS have already told me personally that they want to bring such a thing to market, but I DOUBT either has the engineering resources to pull it off (unlike a company such as WBT, who evidently like the sound of a brass/copper alloy, or else they would have already invented such a composite binding post...it seems to me).