A switch which is magnetic pole insensitive is described. The arrangement comprises a line connection element for accommodating several line connections; wherein the line connection element has a fixed position in the floor grid; wherein the line connections are adaptable to system lines of aircraft systems; and wherein the installations are adaptable by way of flexible inlet lines on the line connection element. Air trapped within the protective case transfers acoustic energy from a sound source within the case to at least one membrane wherein the membrane vibrates in response to an air pressure differential transmitting sound to an exterior of the case. A center console is seated in the cavity forming a planar portion of the seat cushion.