Sorry if this is the wrong place but I'm interested in a scientific and electrical explanation and not some HiFi voodoo magic.
I guess you all have seen the discussions about expensive audio cables and "improved" sound quality.
My question is, what's the best cable for an audio signal? Loudspeaker cables are usually a pair of ~12 AVG cables terminated with banana connectors.
As far as I understand this must be affected by all sorts of noise. To minimize noise it's normal to use coax cable for "radio" signals (LF, MF, HF, …). Wouldn't coax with proper connectors like APC-7 or equivalent be the best for audio too? Or are the frequencies too low for coax somehow?
Internet was a bit vague on this topic.
What I'm really wondering is why don't we use coaxial cables for loudspeakers in average home stereos?
Lets say a signal level of 50 dBm (100W).