High accuracy bass reproducer device

Details High accuracy bass reproducer device High accuracy bass reproducer device

1979-03-29

1980-12-16

Hix, L. T.

Acoustics

Diaphragm

Mounting or suspension means

181174, 181151, 1791155VC, H04R 716

Patent

active

042390907

ABSTRACT:
The present invention is directed to an apparatus for reproducing the bass components of an audio signal with a high degree of accuracy and minimal distortion, utilizing an enclosure of relatively small size. The apparatus comprises a substantially sealed enclosure in combination with a radiating diaphragm driven by an electromagnetic transducer, the principal diaphragm restoring forces being the elastic forces exerted against the diaphragm surfaces by the gaseous medium engaging such surfaces. The device is characterized by the elimination of the roll or surround joining the cone to the frame as heretofore always employed in reproducers of the air suspension type as the means for effecting a sealing of the enclosure, and the utilization of a rigid peripheral portion of the diaphragm immediately adjacent a parallel interior surface portion of the transducer mechanism to define a gap of minimal dimension, said gap being elongated in the direction of movement of the diaphragm, the clearance provided by said gap being maintained at minimal value consonant with movements of the diaphragm free from mechanical interference.

REFERENCES:
patent: 1824590 (1931-09-01), Bernard
patent: 2014621 (1935-09-01), Jensen
patent: 2775309 (1956-12-01), Villchur
patent: 2860721 (1958-11-01), Hassan
patent: 3767004 (1973-10-01), Liebscher

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