Percussion instrument e.g. Cajon Bongo, has box-like base plate whose bottom side has recess such that opening is formed on support attached with base plate for emitting sound waves outward from interior

摘要

The instrument has a box-like base plate (2) which is open at its bottom side and closed at its top side. The bottom side has a recess such that an opening is formed on a support attached with the base plate for emitting sound waves outward from interior. The recess has an arc-shaped clipping, and arc-shaped limiting recesses are formed at a longitudinal side. A divisional bar extends transverse to the base plate.