Abstract: The present invention relates to a loudspeaker system designed to mount into a building's interior wall through an opening between two framing studs. The loudspeaker system includes a speaker enclosure with two opposed side walls. At least one side wall has a slot formed in it. At least one rail is mounted to a framing stud and extends outward from the opening. The enclosure is mounted to the wall by sliding the slot along the rail. Fasteners are used to secure the enclosure to the rail.