Sound output system

Details Sound output system Sound output system

1995-01-26

1996-07-16

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

381159, 381 90, 381153, H04R 2500

Patent

active

055374808

ABSTRACT:
A loudspeaker unit for producing wide dispersion sound for use in wide imaging stereo has a plastic case defined by a front onto which a separate sound mirror fits, and a back. A drive unit fits into a housing located opposite to the sound mirror. A frame of metal or other rigid material provides a mechanical connection between the drive unit and a load-bearing plinth on which the sound mirror is supported. The case front and back together define an upper space behind drive unit that is connected to a lower space beneath the sound mirror by a passage behind a wall of the case front. The three spaces provide a combined volume of gas that provides a reflex load for the drive unit. The overall size of the unit can be reduced without corresponding loss of bass frequency response, and, because the sound mirror is separate from the plinth, a range of drive units of different dispersion patterns can be provided, requiring only alteration in the surface profile of the sound mirror.

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patent: 4836328 (1989-06-01), Ferralli
patent: 5092424 (1992-03-01), Schreiber et al.
patent: 5131052 (1992-07-01), Hill et al.

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