The Plane Wave Speaker features a flat speaker system equipped with plane wave units, realizing a narrow directivity pattern by radiating plane wave sound. 

Since the Plane Wave Speaker can deliver sound output toward a limited target area, it is suited for use in locations such as station platforms, and escalator areas that require announcements to be broadcast. It is also ideal for museums and art galleries where there is long reverberation time.

A single-sided radiation type radiates sound forward only.