Does the"quality" of jumpers affect the sound?

If your connect your speaker cables to the tweeter/midrange binding posts and jump from there to your woofer binding posts, then the jumpers will have less affect on the sound than if you connect your speaker cables to the woofer binding posts and jump up to the tweeter/midrange binding posts.

IMO.

This is also what Von Schweikert recommends in their VR4 manual.

I'm pretty sure every manufacturer that offers their speaker in a biwire version believes it absolutely makes a difference. Otherwise, why would they spend the extra money?

I wouldn't be so sure. I think many do it because it's "expected".

Two quick comments:

1) If the quality of the jumpers do not matter, there sure are many high-end speaker manufacturers who seem to supply high-quality ones, enough to imply that it does make a difference.

2) Best results so far for me: I use bare wire on the speaker end, and strip the wire jacket 2 inches and use the SAME wire to connect both ends.

Cheers!

Tvad- Wiring into the upper post and jumping to the bottom is something I've been doing (and suggesting) for quite a while also from recommendations by Tannoy and Stuart Marcus (Vampire Wire). It's good to hear others using this technique.

I think the only way is to wire to the top and jumper to the bottom. The highs are much more sensitive than the bass so it makes sense.

Arthur