John, I have tried Zu Libtec speaker cables with jumpers and did not like them at all. They were dull sounding and lacked dynamics and speed. The collapsing of soundstage took place as well. Zu customer service is top notch and they took the cable back so all I was in is a shipping cost.
Acoustic Zen Satori Shotgun bettered the Libtec by a big margin. Much better choice and a bargain used plus easy to sell.
By the way, the jumpers that come with N803 are pretty good. If you do use the cable with jumpers, make sure you connect the speaker cable to the top and jump from there to the woofs. Keep in mind that N803 are 3-way design and as many single run cables I have tried, they always gave their best when biwired. Not trying to discourage your purchase, but it's a fact, at least in my system.
For the same price Ibis costs new, the Synergistic Research Tesla Accelerator in my mind may be a better choice. I have auditioned these and they simply kicked ass. No kidding! I think with your Plinius integrated that's kind of smooth and relaxed sounding, the SR Tesla Accelerator would be a very nice match. It would still keep the smooth but detailed top end, grain-free mids and thunderous bass plus the soundstage that is hard to beat.
