What is the thickness of the speaker wire?

The thickness of speaker wire is measured in gauge, with common sizes ranging from 12 to 16 gauge. A lower gauge number indicates a thicker wire, which allows for lower resistance and better sound quality, especially over long distances. The choice of thickness often depends on the speaker's power requirements and the distance between the speaker and the amplifier. For most home audio systems, 16 gauge is sufficient for shorter runs, while 12 or 14 gauge is recommended for longer distances or higher power applications.