Bi-wires links for speakers ?

I'm a noob around here, but, FWLIW, I'm a skeptic.  Very curious, though, whether OP hears a difference from the demo.

the soundstage suddenly became huge the speakers completely disappeared !
There is a substantial boost in the bass much more massive, deaper and tight.
The little bit brightness I had gone completely all is more natural and calm,
Further more my system became more detailed and accurate.

That's simply amazing.  Sounds like a couple of inches of speaker wire makes as much of a difference and improvement as going from a cheap HT receiver to a nice pre and monoblocks.

@OP. Still a skeptic.  That's way beyond anything I heard from trying out bi-wiring or passive bi-amping (with the same or similar amps).

But, it's been a long time since I monkeyed with it and with lesser gear, then.  And I have no reason to believe you are clinically delusional or making it up, so, I am going to try it, too, at least with a couple of the stock bar jumpers, for what little effort it will require.  It will be with stranded 12 gauge OFC with bare ends.  One might argue that whatever would make the stock bar jumpers so awful should be the same or similar to what should happen in all but perhaps the "best" spades or bananas (heck, even the binding posts on either end), if only on a slightly large scale.

Odd though, which manufacturers opt to use the bar jumpers and even on low-to-mid-five figure speakers...where, seemingly, attention was given to much less obvious or visible details, including internal wiring.

Awesome though, at least for you and your setup, you found a minor tweak that made a difference and that you are happy with!

Well.  Tried it...with 12 gauge stranded OFC with bare ends.  Unscientifically.  No double-blind instantaneous switching.

1.B&W 602s3. In a sub-optimal setting with mediocre gear.  I could discern zero difference, positive or negative.

2.Canton VR5 DC.  Eh.  Maybe a tiny difference in clarity in mids.  Well within the margin of error in and between my ears and likely within any difference that could be attributed to changes in lunar or solar tidal forces on the ears in the time between listening or to a degree or two temperature change or an extra couple of minutes of warm-up on an already warmed up system or to placebo effect.

Just a quick switch and a fairly quick listen.  Was skeptical, but certainly hopeful.  No night and day difference for me.  Couldn't say it hurt or degraded anything, though.

Probably just my crap system and cloth ears....  Glad for others who find improvement with swapping out the jumper bars.