Speaker cable geometry question


First of all, I'm sure this has been asked somewhere but I couldn't find it.  I have been out of the loop for a while and have just gotten back into the hobby and am looking for an answer on this (because I am just curious).  
Most speaker cables consist of any number of geometries in a single run from amp to each speaker in a single sheath.    Some however have single runs of + and - to each speaker.  Such examples include certain Purist cables such as Dominus and Neptune, Jena Labs and Nordost.  I am sure there are more but these are the ones that came to mind.
What is the advantage or disadvantage of doing a cable run in this manner.  These are very expensive brands and I've been rekindling my interest and this is one area in which I have developed a particular curiosity. 
nutella

Showing 1 response by nutella

Thanks Shadorne, I've read stuff like that basically and on this page in particular, Fig 11 shows no more than a 0.025 dB drop at 25 kHz for the largest spacing of that particular example.  Fig 13 shows with the largest wire a difference of around 0.01 dB for increasing the wire spacing from 9mm to 12mm.  And figure 14 shows a differnce of 50 nanoseconds (0.000000005 seconds).  Further it comments that " In practice it is questionable whether delays of the magnitudes shown would ever be audible. "

Now, as an example, Nordost Tyr has 26 conductors of 22awg for a total of approx  8 awg wire.  Jena has some of variation on this type of geometry as well in separate + and - runs.  Not sure what's inside separate Purist audio runs but wonder what if any advantage or disadvantage using separate + and - is apparent or even perceptible.