Wide-band loudspeaker having a diaphragm area divided into sub-a

Details Wide-band loudspeaker having a diaphragm area divided into sub-a Wide-band loudspeaker having a diaphragm area divided into sub-a

1987-01-22

1989-04-11

Caldwell, Sr., John W.

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

381162, 381194, 381182, H04R 124, H04R 716

Patent

active

048213306

ABSTRACT:
The invention relates to a wide-band loudspeaker in which the overall diaphragm is divided into an inner and an outer diaphragm sub-area. The inner diaphragm sub-area preferably consists of a dome-shaped cover of the moving-coil support. The outer diaphragm sub-area can be formed as a cone or NAWI diaphragm or as a shaped or moulded body, the shaped body having an at least approximately planar front face and its rear boundary face having the form of a cone or NAWI diaphragm. The outer diaphragm sub-area is connected to the moving-coil support by a frequency-dependent yieldable connection with high damping which at high audiofrequencies practically decouples the outer diaphragm sub-area from the moving-coil support but at low audiofrequencies acts like a rigid connection.

REFERENCES:
patent: 2539672 (1951-01-01), Olson et al.
patent: 3114429 (1963-12-01), Miner
patent: 3772466 (1973-11-01), Hossbach
patent: 4190746 (1980-02-01), Harwood et al.
patent: 4387275 (1983-06-01), Shimada et al.
patent: 4547631 (1985-10-01), Nieuwendijk et al.
patent: 4590333 (1986-05-01), Strohbeen
patent: 4706295 (1987-11-01), Putnam et al.

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