Night and day speaker connection

Thanks guys, you confirm that I am not only dreaming... 

twolwftears,  Probably it would be difficult to make and find banana or fork connectors that accept such a big awg cable ?
Two biwired speaker cable together:
2 x 15 AWG x 2 = ? AWG

janewyman, thank you I just need this to the good size sleeve.

turnbowm, yes more natural, full spectre, space and depth, pristine highs.  There are ways to connect the (-) and (+) on the bindig post:  the red on the bass post and the black on the treble post.  Or both (-) (+) on the bass post.  It change the sound and precision and also impact dependig of our taste.

douglas_schroeder , I would probably try your suggestion of double the cables, would it double the performance as the one I just did... wow it would be fantastic !  Thank you

tablejockey , I take a look inside my speaker and the internal speaker cable is not thin at all .

douglas_schroeder  Thank you. I think thats is why the Jumper conception is important in my observations, it is not the cheap melal plate sometimes included in the speaker box.  My Jumper are: combine equal quantities of stranded and solid-core OCC copper. The stranded wire bundle consists of two 14 AWG OCC copper conductors encased in a Teflon© dielectric and oriented in a twisted-pair configuration. The solid-core wire bundle consists of a twisted set of five conductors of various gauges (16/18/20/22/24) for improved bass and treble extension .  So it is a very important part of the important link between speaker binding post and speaker wire

Soix, I will try "Quad biwiring" with the Jumpers in place. Thank's

twoleftears.  OK what you mean, if I double or add to my speaker wire, that I had already modified from a bi wire with  a single wire. Do I would use the same speaker post with banana and spade using my Jumper ?  So two cables on the same post, so twice much current as my first modification into single wire, and 4 times more curent as the initial bi wired speaker cable ?  It is not cheap, but if it worth to try, and it would give more improvements...  Thank's

Soix, With the jumperS instaled, it is probably the same result, if I connect the 4 cables (banana and spade) on the treble binding post, or with the jumperS instaled, with two cables on the treble and two cables on the bass speaker binding post ?

douglas_schroeder  Probably you are right, soon I would double ("without the jumper") one big AWG speaker cable on the bass and one of the same big AWG on mid and tweeter.  I think it would be a killer 

douglas_schroeder  Test done, The music is amazing with double biwire "without jumper".  If you can afford it,  adding another pair of speaker cable to your bi wireable speaker, one of the best upgrade for me.  Timbre, musicality and no more compressed music, the music flow easily.  But I had to make and return my speaker cable for a factory terminated speaker cable, because the AWG was too large for my connectors, and my abilities.