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Ultra low frequency transducer and loud speaker comprising same

A converter and ultra-low frequency technology, applied in the field of ultra-low frequency converters

Inactive Publication Date: 2008-09-03
STILLWATER DESIGNS & AUDIO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical stereo speakers or woofers only work in the bass range down to about 40-80Hz

Method used

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  • Ultra low frequency transducer and loud speaker comprising same
  • Ultra low frequency transducer and loud speaker comprising same
  • Ultra low frequency transducer and loud speaker comprising same

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Embodiment Construction

[0012] The present invention relates to a sub-low frequency transducer, ie, a transducer capable of effectively reproducing the lowest two-octave music in the range from about 20 Hz to 80 Hz. The transducer of the present invention has a concave diaphragm (or paper cone). The perimeter of the diaphragm may be rectangular or square. Alternatively, the perimeter of the diaphragm may be circular or oval. A rectangular shape maximizes the diaphragm area relative to the housing (which is also usually rectangular) and thus maximizes air displacement in the loudspeaker.

[0013] See now the attached figure 1 , there is shown a loudspeaker generally indicated at 10 in accordance with the present invention. Loudspeaker 10 includes a housing 12 having a front aperture 14 . The housing houses a transducer 16 with a diaphragm 18 having a periphery 20 whose size is substantially coextensive with the opening 14 in space. as in figure 2 As clearly shown in , the front hole 14 of the h...

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Abstract

The invention relates to an ultra low frequency transducer and loud speaker comprising the same, particularly the invention provides an ultra low frequency transducer which can effectively recurring the lowest bi-octave from 20Hz to 80Hz, including a basket shape body; a concave diaphragm with rectangle periphery, the size of which is arranged to be supported in the front of the basket shape body, and is supported to move axially, also the diaphragm includes an outer layer for shrinking and extending equally when the diaphragm reciprocates ; and a driving module supported by the basket shape body, including a permanent magnet and a voice coil connected with the diaphragm, wherein the voice coil is connected with a signal source, hence, the driving module is suitable for the to-and-fro axial movement for converting the signals fron the signal source into the diaphragm, thereby generating the ultra low frequency sound. The invention is suitable for the sound transmission and the magnifying field, which can satisfactorily recur the signal in the range of ultra low frequency.

Description

[0001] This application is a divisional application of the invention patent application submitted on October 20, 2000 with the application number 00801230.X and the title of invention being "ultra-low frequency converter and loudspeaker equipped with the converter". technical field [0002] This invention relates to subwoofer transducers for use as subwoofers in automotive speaker systems. Background technique [0003] In car speakers, space is very limited. There is often a conflict between the need to minimize the size of a loudspeaker and the need to maximize the sound and performance of the loudspeaker. This is a particularly real problem in the case of subwoofers, where very low frequency sounds are to be produced. [0004] Loudspeaker volume is a function of the volume of air moved due to the movement of the diaphragm, as well as the travel or offset of the diaphragm and its diameter. Typical stereo speakers or woofers only work in the bass range down to about 40-80H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R9/06
Inventor S·M·厄比W·O·多林
Owner STILLWATER DESIGNS & AUDIO