Abstract: A high-fidelity speaker arrangement suitable for mounting in the wall structure of a wall is disclosed. A bass reflex speaker enclosure containing a plurality of speakers and an associated cross-over network comprises the speaker assembly to be mounted in the wall structure. A mounting assembly adapted for mounting between adjacent wall studs is secured to at least one of the wall studs and receives therein the speaker enclosure. Both the mounting assembly and the speaker assembly have a depth dimension that is substantially equal to the depth of a standard wall stud, and a width dimension substantially equal to the nominal inside spacing between adjacent wall studs. A trim frame and removable cover grille is provided to finish the mounted speaker arrangement. When mounted, the speaker arrangement gives the appearance of being substantially a continuation of the surface of the wall while enabling the speaker enclosure to provide full range high-fidelity sound reproduction into the room.