Low frequency surface array

Details Low frequency surface array Low frequency surface array

2005-03-11

2008-08-19

Ni, Suhan (Department: 2615)

Electrical audio signal processing systems and devices

Having non-electrical feature

And loudspeaker

C381S182000, C381S087000, C381S386000, C181S199000

Reexamination Certificate

active

07415124

ABSTRACT:
A low-frequency loudspeaker system based on a dipole principle. In some implementations, the system includes an open frame rigging system and multiple subwoofers mounted in a dipole surface array configuration in the open frame rigging system to produce controlled sound dispersion in both horizontal and vertical planes. The subwoofers are operable to produce low-frequency sound dispersion below about 300 Hz. The subwoofers mounted in the dipole configuration include a first set of subwoofers facing a first direction and a second set of subwoofers facing a second direction, in which the second direction is facing a direction that is 180 degrees with respect to the first direction. The second set of subwoofers are wired out-of-phase with respect to the first set of subwoofers to reduce non-liner distortion. The first and second sets of subwoofers are configured to concurrently move in a same direction when a signal is applied to the subwoofers.

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Weems, David B., et al.,Great Sound Stereo Speaker Manual, Second Edition, New York: McGraw-Hill, 2000.

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