The outer shield is available in various configurations, two of the most common are twisted and braided. The inner conductors are composed of many thin individual wires twisted around each other for flexibility. They do not have a standard impedance, but are usually close to 110 Ω. BALANCEDīalanced cables, which can be used for either balanced mike-level or line-level signals (or unbalanced mike or line signals, for that matter), consist of two (or three) insulated conductors surrounded by a metallic shield and an outer jacket of rubber or plastic. But there are many variations on these two themes. As mentioned earlier, there are two basic cable types: balanced and unbalanced.
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