Blue Jeans Cable Sound Good???

Ieales...total newb here...can you please define "screen"?
Thank you.

screen is referring to the ground and noise shield.... in this case, built like a cross hatched screen.

https://en.wikipedia.org/wiki/Coaxial_cable
The image the link, it is the ’B’ item that is the ’shield’ or ’ground’.

Both ground AND shield, in this case of a coaxial transmission line design. To reject RF and noise injection into the center conductor, which is the one carrying the intelligence or signal.

That ’signal’ is referenced to the ground/shield, likened to your riding a bike and the bike is referenced to the ground you ride on. (Bike no workee with no ground to ride on)

Something in the given case has to refer to a standard set point, and in this case it is carried by the ground, and acts doubly as a rejection of noise and interference.

Thus the ground can be referred to as a ’shield’, as well.

It, in conjunction with impedance functions..that..is about all we really need to know when applying to RF signals...grab the engineering bibles and apply, all will be fine.

But it is unbelievably inadequate when it comes to dealing with audio signals, which have the widest bandwidth and go from DC to extremely high (low RF) frequencies.

Audio...which is unique and is the probably the most complex of all in the domain of electrical AC signals and propagation. Impedance applies to audio cables about as much as the given relative speed of the moment..of a car  --applies to the design of the entire car. It's applicable, minimally, yes... but relative to the whole package? No.

I use Blue Jeans speaker cables ,   canare star quad. I don't  see how they could be a detriment  since the wire inside the speakers is basic 12 guage copper, a good 3 feet of it so why would the 5 feet between that and the amp need to be anything else. I also use their balanced interconnects  between the dac and amp. 

@teo_audio -
coax is not used for balanced connections. Shield and ground are not the same. In balanced connections one rarely wants ground and shield connected. see https://en.wikipedia.org/wiki/Balanced_audio

@djones51 -
the cable in the speaker comprises part of the load seen by the amplifier. If you change it, you may change the sound of the speaker.

Voice coil wire is very thin, perhaps 40ga or smaller. Using your logic, the 12ga is over kill.

Speaker wire reacts to the amplifier and with the loudspeaker. Just as one may change capacitors from electrolytic to mylar to polypropylene to PTFE to PIO and detect no, some or great change, so to will changing speaker cables affect no, some or great change depending on the amplifier and loudspeaker. Similarly for TT/CD/DAC->Pre and Pre->Power connections.

The messy bit is that cables must be judged in a system and there is no guaranteed magic bullet.

In my speaker the entire system sits in the top like a can, from the binding posts at the bottom to those cans is basic 12 guage wire , there is also a 4 prong metal connector between . I fail to see how anything more than a basic 12 guage speaker wire which the manufacturer recommends is going to matter unless I  rewire  from the cans to the posts.