A mounting apparatus for attaching a device like an electro-dynamic loudspeaker to a mounting location in an automobile or other vehicle. The mounting apparatus employs bracket hardware that is either affixed to or integral with the loudspeaker that is to be mounted. The mounting apparatus can position the loudspeaker in a fixed angular orientation, or enable the angular orientation of the loudspeaker to be variable, as desired, to achieve the optimum performance of the loudspeaker.