Using a TV Socket to route speaker cables through a wall.
After installing speaker brackets on the wall, I routed cables up to the ceiling and back down the wall to the amplifier. Rather than break the cable and add another join by using speaker wall plates, I choose to keep the cable in one piece and route through a TV socket plate just unscrewing the metal connection plate and pushing the cables through. The face plate was fixed to a standard metal back box (with a gromit to protect the cables).
Metal plate removed – only fixed with two small screws