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

@b4icu
This has been interesting and might I add amusing to read.........OK, I'll play, why not, I might learn something useful.........Bryston 4BST amp, bi-wired to Vandersteen 3A signature speakers. Advertised DF is 500+ if I recall correctly.........Currently using 15 foot runs of Belden 10AWG, two per speaker to single terminal on the amp.............What's your suggestion?

Sorry for the double post, site isn't acting right :(

So, 10 milliOhm is going to make a big difference? That's 0.010 Ohm resistance. Really? 

Mr. shadowcat2016
For your setup, a 2x0 AWG is recommanded.
A 10 AWG has 10 times the resistance of a 0 AWG.
The Bi-wire is a mistaken concept. A single wire that has the added thickness of the two of Bi-wire, would do better. If you would run this simulation on "Spice" you would see that. 
For the wire you have and the wire you need, it is x20 times worst.
Whay do you say: "I’ll play, why not, I might learn something useful". This service (doing the calculation for you) is given for free. At least for now... :-)