Using solid copper Door Bell wire as speaker wire.

People cannot hear the difference between cables for many reasons. It could be their system that is not resolving enough, could be their hearing instrument or just negative placebo effect since they often strongly believe, that cables cannot sound different. Often they feel defensive about inability to hear the difference (if I cannot hear, nobody can) and post questions about lamp cords or thermostat wires to find confirmation from the other people. Since wire is inexpensive just try it - If it sounds good to you then use the cheapest one, even if it is barb wire (be careful). No right or wrong here.

So important you need 2 threads??

Two threads...better than one? 👀

When the efficacy of expensive cables or tweaks is challenged by someone who might be considered to be a skeptic about such things, especially where the claimed efficacy seems unexplainable or quantitatively counter-intuitive on the basis of generally recognized science, it is common for responses to be along the lines of "if you haven't tried it, you can't have an opinion."

It seems to me that such a response would be no less applicable to those who would challenge the efficacy of specific inexpensive or DIY cables such as those being discussed here, theoretical considerations about metal purity and other factors notwithstanding.

Regards,
-- Al

All I know is I can hear a significant difference between cables on my system, even 12 gauge monster cable from best buy, I can hear a difference between 5ft,6ft, 8 ft even with this cable, going from Tara Labs the one cable system to the zero gold, omega gold, cobalt power cord was a revelation I will not forget, was huge!