Means for critically damping a dynamic loudspeaker

Details Means for critically damping a dynamic loudspeaker Means for critically damping a dynamic loudspeaker

1983-12-16

1986-07-01

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

1791155DV, 179180, 381 96, H04R 904, H04R 308, H04R 900, H04R 128

Patent

active

045981787

ABSTRACT:
Critical damping of a dynamic loudspeaker is achieved by placing a supplemental, short circuited coil of similar configuration and mounting alignment to that of the drive coil in rearward adjacency thereto for being biased into the flux gap during extreme forward excursion of the speaker cone and drive coil. External circuit elements connected to the supplemental coil provide desired impedance for damping particular resonant frequencies.
High ambient-temperature performance capability for functioning of a speaker in a public address system or to sound an alarm during a fire is provided by use of an aluminum cone diaphragm and a plastomer coated glass cloth surround.

REFERENCES:
patent: 2069254 (1937-02-01), Kunze
patent: 3125647 (1964-03-01), Rouy
patent: 4160133 (1979-07-01), Wiik

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