Speaker Jumpers

@bigtwin 

While I often agree with you, this time I do not. If you use a cable that is at least as good as your speaker cable, I can hear a difference between a piece of punched steel and some 12 gauge copper.  After a few tests, I bought a demo set from Audio Art and the both the bottom and the top sounded cleaner.  When I got rid of my KEF’s I kept the  jumpers and put them on the Sonus Farber’s and once again I could hear the difference.

You’re moving the signal 2 - 4 inches?  Welcome to the world of audiophile marketing.  IMHO, you have answered your own question.  Let the cable wars begin, again.  😆

I agree with @mclinnguy. I owned a Zenwave PSR11 power cord. It sounded terrible for the first 100 hours, and it took more than 500 hours to get 95% of its peak level. 

Keep them on for 200 hours as recommended. 

I am 100% with @bigtwin on this one.

My go-to is two use double runs of whatever speaker cable I am using, one full run to the LF posts and the other identical and separate full run to the MF/HF posts. However, when I am using single run (non-biwire) cables with jumpers, I usually connect the full-range cables to the MF/HF posts and jump to the LF posts.  I have several sets of jumpers I have constructed and my favorites use the same Furutech spades as your JumperFlux cables with wire mined from Harmonic Technology cables - 9awg, individually insulated, solid-core OCC copper wires in foamed PE. Those are probably overkill but I do some things just in case it makes a difference, and jumpers are one of those things.

Regarding your specific JumperFlux cables, based on the approximately 9.5awg wire specification, I suspect they are simply Furutech's Evolution Speaker II wires, which are fine stranded OFC copper wires with PE insulation. With those jumpers, I would be very surprised if anyone were able to reliably discern the difference in the sound of low frequencies compared to other suitable jumpers.   BTW, 200 hours of break-in is just rediculous.

My rule of thumb when I owned a audio store is use good quality cables 

same brand if possible ,and same like jumpers that match the speaker cables 

your end connectors critical  cheaper gold over brass Avoid , Siver or Copper 

3 x more conductivity ,3 x less resistance ,= lower noise floor.

that flushing sound is the sound of money going down the toilet lol

the marketing department earned its keep on this one... removed $ from wallet of gullible ocd audiophile very successfully

we have all been there