No one actually knows how to lculate what speaker cable they need

Mr. keppertup
It is not a good idea to solder a o AWG wire.
Try to use a cable shoe and crimp it.
I would not solder my equipment's bindig posts to wires...
use banana plugs.

By all means let's boil it down to a subjectivist decision and take all fun out of the equation. Part of the joy is experimentation. 

Signed,
An Objectivist Listener

There is so much pseudo science and 
engineering as to be a prototype for "whacko audiophilia" and many smiles so thanks. But I did want to put in a genuine admiration for Keppertup's hands on experiments based on straightforward parameter changes and rational money. I might look for some of that jewelers wire my own self.
I have yet find better than #12 copper (12 foot lengths) for my system, that I compare to live unamplified acoustic instrument sound that I know well, because I play it. But that is just me.

I have just read through this thread and now I am dizzy.