Electroacoustic transducer

Details Electroacoustic transducer Electroacoustic transducer

1997-11-12

2000-02-08

Le, Huyen

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

381417, 381396, H04R 2500

Patent

active

060235195

ABSTRACT:
The invention provides an electroacoustic transducer capable of preventing degradation in its acoustic performance as a result of the reflow soldering process applied. With the electroacoustic transducer, variation in the minimum resonance frequency Fo of a diaphragm is restrained, stabilizing the acoustic performance by causing a decrease in the minimum resonance frequency Fo of the diaphragm due to irreversible demagnetization of the magnet caused by the reflow soldering temperatures to cancel out an increase in the minimum resonance frequency Fo of the diaphragm due to thermal contraction of a holder member caused by the reflow soldering temperatures.

REFERENCES:
patent: 4504703 (1985-03-01), Schneiter et al.
patent: 5432758 (1995-07-01), Sone

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