I would aspect cables maker to specify:
1. The actual cooper gauge.
2. The cable length (feet or meter).
3. It’s actual resistance (for a single and for a pair (Red+Balck) in Ohms.
I already made cables of 4 AWG (3m) and 0 AWG (2.5m).
Also has the technical solution to make 2x0 AWG and 4x0 AWG cables.
So far, all cables were made for free, only cost of material.
Can this site (forum) hold pictures? I can attach some.
For all who think it is a joke, you better check it out. First thing, you can get your speakers closer to the amplifier (as a start) and use some jump start cables between the amp. and speaker. Be carfull not to do any short circuit on amp’s outputs!
You may be surprised (for the good) from the sonic change! after that you may come back and share that with us. At the end, ask your self what is the right gauge you need and how to get one. You realize that the jump start cables can not to stay for long.
It is better to understand the relations between amplifiers, speaker cables and speakers, do a knowladgble calculation, and by that make a custom cable to fit - rather than gues and try, with no particular direction or insight.