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Priority to ES1971166196UpriorityCriticalpatent/ES166196Y/en
Publication of ES166196UpublicationCriticalpatent/ES166196U/en
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Publication of ES166196YpublicationCriticalpatent/ES166196Y/en
An improved acoustic box, constituted by an incomplete spherical envelope, cut by the plane of a cap that determines the position of the flat emitting grid, with the slots for the passage of the sound waves. The spherical surface is completely smooth, carrying at one point the bushing of the conductors. At this point the roof envelope can be suspended, so that the grid plane is at the bottom and horizontal. (Machine-translation by Google Translate, not legally binding)
ES1971166196U1971-02-171971-02-17
A PERFECTED SPEAKER.
ExpiredES166196Y
(en)