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

Actually, silver is 7% more conductive than copper but who’s counting?

Be civil, people.  Personal invective is mean-spirited and counterproductive,
      (A certain amount of generalized invective launched into the aether can be fun.)
     As an audio dilettante and a scientist, I find all the discussions of cables not based on laws of physics or blind comparisons to be , well, entertainment.

     BE NICE NOW!
      

I bet you’re not too thrilled with directionality or cryogenics or burn in. 😛

Ebay is selling 25 feet of 0 AWG copper wire for $23.  I will buy it, install it and report back.  I have five feet of cable between amp and speakers.  Any other instructions?  For me the hobby is about experimenting.

OP
The ml3 has select able DF 100,200, and 300 at 50Hz. The ribbons are from the Infinity IRS. Actually I am tri amplified, another ML3 and a ML9 on the top. I can run active or passive on the crossover and  do switch back and forth if any of that matters. Does that change anything? When I am active crossover there are no coils. How does that affect your recommendation?
Thank you