A couple of things about speaker wire. Most of the stuff sold in stereo shops is lamp cord and it cannot be installed into the walls of buildings without a raceway because it does not meet the flame spread requirement in many building codes.
Most speaker wire is 2 wires running parallel without a twist or a long capacitor and can alter cross over frequencies. The twist in most building approved cables cancels the capacitance and gives a truer cross over performance.
Audiophile propaganda usually makes a fuss about oxygen free copper which most electric wires are without the added cost of the wire that makes a fuss about being oxygen free.
Stranded wire is best and fine stranded better as it provides more surface area for the higher frequencies which tend to run on the surface of each strand.
Solid wire can work but the frequency response can be affected.
Generally the cables made to be installed into walls is better than the marketed stuff in electronics store and is often much cheaper too.
Audiophile quality is very often so full of BS and marketing Hype to command outrageous prices. Of course if you were to check the hearing of most Audiophiles you'd find their hearing is about as bad as the rest of us.
Very few people can hear 20 to 20,000 hz after our teens.
