Can I clarify something here. Fatter/larger diameter speaker wire doesn't always equal better sound.

Unless the amp output is reasonably large and consistent then a fatter cable helps in lowering resistance making it easier for an amp to generate output without overheating. However, we are talking about a professional situation more than a home one.

Larger diameter speaker cabling introduces capacitance which causes high frequency roll off. That in a home situation is more likely to be apparent.

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