Case, preferably aluminum presentation case/telephone training case, has one or more components for reproducing acoustic signals, e.g. loudspeakers, whereby stowage space of transport case can act as resonant volume

摘要

The transport case has a space in a housing for stowing at least one document, electronic device or object combined with one or more components suitable for the reproduction of acoustic signals, e.g. loudspeakers, whereby the stowage space of the transport case can act as a resonant volume.