Would silver cables beat UP-OCC copper?

@nonoise - When you say jumpers - are you using the metal jumpers that come with the speaker?

If you are, then yes, the jumpers are the issue
- but rather the making a second set of cables try some quality jumpers like these ones on @grannyring 's system page - he loves them

grannyring's System - Virtual Systems (audiogon.com)

Also take a look at this thread - the Helix Speaker cables are exceptional

Regards - Steve

@williewonka ,
Actually, I was using a pair of DH Labs silver plated OFC copper jumpers and for the longest time, and thought they were great. It was when I tried using the Tempo Electrics on the high connectors was when I realized some musical information was AWOL, along with cleaner and clearer highs and lows. This will take some time. 😄

All the best,
Nonoise

OK, so I forgot about Google. Magnet wire has, as an average, a dielectric constant of about 3.75 - 4.00

So that is nowhere near Teflon, and not so good.

@nonoise 
I see you are also a Tempo Electric cable user as well. It would be interesting to see how a set of bi-wire Tempo Electric speaker cables compare to your single wire experience. My Neotech high definition silver speaker cables sound better in bi-wire configuration with my speakers, Classic Audio Loudspeakers T1.5 Reference from McIntosh Mc2301 amps. I used the classic Audio copper jumpers at first, but felt that the imaging was slightly subdued. How long are your speaker cables? I need a pair of 10 feet and prefer bananas. 

@audioquest4life ,
My Tempo Electric SCs are both 8' for the 16 GA and I believe 6' for the 14 GA. In addition to the Tempo Electric on the highs, I'm using my trusty old Cabledyne Virtuoso SCs for the bass. They are 10 GA OCC stranded silver with Furutech locking bananas and I really hate the idea of taking them out of the equation as they perform admirably. They're even better sounding than the Tempo Electric, IMHO. 

Quite the quandary I'm in, ain't I?

All the best,
Nonoise