It can depend on the age and building style of your house. Mine was mounted above the fireplace. They cut a hole the size of a double plug socket in the wall behind the TV and one on the side of the chimney brest. Plastic covers were then fixed in place, keeping the hole open but looking all tidy. The power cable and the one set of component were then ran from one hole to the other and into my amp.
If it's a solid brick wall then this won't work
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