Canare 4S11 Star Quad cables for speaker

Borrowing the quote from above:

"When conventionally wired, star quad speaker cable has the advantage of reducing the EM field around the cable, which will tend to diminish the effect of the signal in the speaker cable upon nearby interconnects--though this is not, in most applications, a significant concern."

Is that quote attributing EMI reduction to the starquad inner conductor geometry? Can someone explain why this would be true or direct me to a proper explanation?

I can accept that statement when the starquad is wired for balanced signals. I have trouble accepting that the starquad geometery has a significant effect on EMI when the cable is wired with the four center conductors as signal and the shield as return/ground as I have seen done for speaker cable applications. I would expect the quality of the shield to be the characteristic that influences EMI susceptibility in a single ended cable.

I just want to know if I'm missing something with respect to the governing field theory. I already know it's decent wire for speaker cables.

Thanks, that makes sense. I was thinking of the starquad shielded mic cable design and how I've seen some people use that for cheap speaker cables.