Keep the Grille Out of the Load Path
A speaker can have a strong outer housing and still contain surfaces that should carry almost no packaging load. Fabric grilles, perforated metal covers, exposed driver areas, passive radiators and control panels can all sit close to the outside profile without being suitable retention points.
The insert should hold the speaker through stronger parts of its enclosure.
For a rectangular speaker, that may mean the base, rear housing, structural side edges or protected corners. For a cylindrical portable speaker, the better contact points may be end structures rather than the fabric-covered body. The exact support pattern depends on the product.
This puts speaker boxes in a different part of electronics and gadget packaging: the package has to carry product mass while deliberately avoiding some of the most visually prominent surfaces.
A cavity that simply traces the speaker silhouette can therefore be misleading. If the insert presses against a grille because that is the widest point, the geometry may be close but the load path is wrong.
Identify the safe contact surfaces first. Then build retention around them.















