Portable loud speaker system

Details Portable loud speaker system Portable loud speaker system

1989-09-28

1990-10-02

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Hearing aid

381162, 381 25, 381 90, 181161, H04R 502

Patent

active

049612271

ABSTRACT:
A portable speaker having a speaker housing which vibrates in harmony with the audible sounds generated by the speaker. The speaker includes a loud speaker housing having a surface capable of vibrating and a speaker cone which vibrates within said housing to generate audible sound during the speaker's operation. A propagation member which has a first contact surface in contact with the speaker cone, and a second contact surface which is in contact with the vibration surface of the speaker housing is responsible for transmitting the cone vibrations to the housing surface. The transmitted vibrations causes the surface to vibrate in harmony with the audible sounds created by the speaker.

REFERENCES:
patent: 3423544 (1969-01-01), Weiss
patent: 4064376 (1977-12-01), Yamada
patent: 4750208 (1988-06-01), Yamada et al.
patent: 4757548 (1988-07-01), Fenner, Jr.

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