Can I use aluminum coil to make a speaker wire?

While it is technically possible to use aluminum coil as speaker wire, it is not recommended. Aluminum has higher resistance and lower conductivity compared to copper, which is the standard material for speaker wires. This can result in signal loss and reduced sound quality. Copper is preferred due to its superior electrical conductivity, ensuring minimal signal degradation over distance. For optimal audio performance, it's best to use speaker wire made from high-quality copper or copper-clad aluminum.