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Originally Posted by brandonchenry
I think using oxygen free copper is a wise idea. Regular old stranded lamp cord does work, but it has way more signal loss than an oxygen free copper.
If you really live in a rural area where you can't find 12g oxygen free wire in a retail store, I'm sure you could order it online.
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There are no conductive differences between Oxygen-Free (OF) and the most common form of copper (known as Electrolytic-Tough-Pitch - ETP). In fact, ETP copper is required to be purer than OF in regards to actual copper content (99.99% vs. 99.95%). There is a higher conductivity grade known as OFE (Oxygen-Free Electronic), but that's not what you are going to find in speaker wire. Essentially, "Oxygen-Free" speaker wire is just another BS marketing term.