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How to Convert Optical to Coaxial:
Optical audio cables transmit sound signals through light pulses, while coaxial cable uses more traditional copper or other metal wiring to send the signal. An optical to coaxial connection requires a converter box, available at electronics stores. The cables connect directly to the box, which adapts one signal to another. Most converter boxes are bi-directional, meaning you can turn optical into a coaxial signal or coaxial to optical.