An electrical connector includes an insulated housing and a plurality of contacts assembled to the insulated housing. In an aspect, an apparatus includes a loudspeaker suspension structure having grooves, each extending from an inner circumferential border, to an outer circumferential border, at least one groove having a groove depth that varies asymmetrically from the inner circumferential border to the outer circumferential border. A monitoring network is coupled to a facility management processor which may be a personal computer located in a golf course club house in communication via a base station interface and hand-held communicators.