Loudspeaker enclosure with at least one loudspeaker with a convex mobile membrane exhibiting continuity of shape with an adjacent member

A loudspeaker enclosure (10;

• 100), including:
• at least one loudspeaker having a convex mobile membrane, the convex side being turned toward the outside of the enclosure, and
• a member surrounding the mobile membrane and including an outer surface bounded by an inner edge (Γ′) situated facing the mobile membrane,
• the mobile membrane including a peripheral edge (Γ) situated opposite the inner edge (Γ′) of the member and forming a closed loop,
• wherein the mobile membrane and the member have a shape adapted so that, over a continuous portion (Γ″) of the peripheral edge (Γ) representing at least 25% of the length of the peripheral edge (Γ), for any first point (M) of the continuous portion (Γ″) and any second point (M′) situated on the inner edge (Γ′) at a location such that the distance between the first point (M) and the second point (M′) is minimal, the mobile membrane has, at the first point (M), a first tangent plane (PM), and the outer surface of the member has, at the second point (M′), a second tangent plane (P′M′), the first tangent plane (PM) and the second tangent plane (P′M′) being substantially coincident with one another,
• wherein:
• the member is a box that is at least partially spherical in a spherical zone,
• the loudspeaker enclosure includes a plurality of loudspeakers having mobile membranes, the loudspeakers being substantially identical and installed in a wall of the box, and
• the mobile membranes are in the form of a solid spherical cap with the same curvature as the curvature of the spherical zone of the box, the mobile membranes substantially extending the spherical zone of the box to form, in the idle position of the mobile membranes, a substantially continuous spherical surface.