Playing around with specimens might be fun as playing search and cath blindfolded. This game is fun for kids till a certain age. After, it becomes childish. So is your pathetic say about your ways to get to the right speaker cable. Not to say, that even the one you poses now, is NOT the one.
It might as well be another step in your journey. An endless journey.
No need any more. Now, as the knowledge is there, it can be reached on the 1st attempt.
Even though you are very proud of your enjoyable journey, it doesn’t give you a clue of what is the best (and right) cable for the next guy that is going to visit the audio shop, for his speaker cable!
You offer him an endless journey, with no promised results, but maybe a joy from the journey...
I offer him a quick calculation, and the right cale, spot on, on the first attempt.
In other words, lets say that we (you and me) are saling two different GPS navigators (Never lost).
Yours will go around, get you some journey, but no garanties for getting to your destiny, but giving you some illusion that you will get there soon.
Mine, is a 1st time on spot, with the fastest and shortest path.
I’m really sorry for your poor choice.
I do acknowledge that your way is very beneficial for cable makers, sales guys and shop owners. I kind of think, that you are just happy to feed them with your hard earned $$$.
No need. There is a way available to save all that.