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


It goes back to cable manufaturars, mostly provide no relevant data! to sales and the users. None will answer this!
Whay do you think that you own now the optimal cable to your setup?
I think I've figured it out. 


128x128b4icu
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
Mr. partroysound
I'll quit this game, till the OP's end. It is getting a bit weird. 
Mr.  keppertup
Good Luck. How exactly do uou have in mind connecting the  0 AWG copper wire for $23 to the amp and speakers?

partroysound
The ribbons are from the Infinity IRS.
The Infinity IRS uses planars, not ribbons.