Resonant Walls through Invisible Speakers! The innovative surface speakers of the Invisible Series, which are only a few millimeters thick, are completely concealed beneath plaster, paint, or wallpaper, turning walls or ceilings into hidden sound sources. The astonishing listening experience: Thanks to the special flat radiation characteristic of the Invisible Soundboards, their impressive, harmonious sound is equally audible throughout the room - regardless of the listener's position.

Surface speakers are particularly suitable for invisible background sound in rooms with increased humidity such as bathrooms and swimming pools. With a polymeric, moisture-protected special membrane.