Length of speaker cables

Mr. dannad
I’m still waiting to your answer:
What is your Amp’s DF?
What is your cable length?

As for your claim, if 5mm apart = 0.4ohm, and 4’’ (10cm) = 1.2 ohms,
than a 1 meter apart, that cables would become a high value resistors...
I don’t think so!
The AWG table say nothing about it.
a #4 AWG, 3m long is 0.00243 ohms.
It can drive 60A @ 650Hz. At 1.8A it will have a full BW of 21 kHz.
At that Fr. you never reach 1.8A...

Mr.  dannad
It was a dubious conversation. We started out with short and thick cables between monoblocks and speakers, ended up with orchestrated BS.
You was kind enough to draw the conversation off tracks as far and low as possible. Sorry, but none of the stufe is relevant.
Just like so many with speaker cable salesman and makers, you think that snake oil is the solution. 
Well, NO! 

You should go to Snake River Audio website, his interconnects and speaker cables are hands down the best I've heard, for bi-wiring he uses a true shotgun style cable (which means no stacking of banana's or doubling up on spade connectors at amp end) his top of the line models uses three different precious metals wbt connectors, well built and impressive sound. 

Steven, really check out Snake River Audio you won't be sorry.