Title:
SPEAKER SYSTEM CAPABLE OF INCREASING DRIVING POWER WITHOUT CHANGING HEAT LOSS IN LOW-FREQUENCY SOUND RANGE AND HAVING IMPROVED REPRODUCTION CHARACTERISTIC
Document Type and Number:
WIPO Patent Application WO/2020/066037
Kind Code:
A1
Abstract:
[Problem] With respect to a small full-range speaker system, it is difficult, in a vibration-type speaker which vibrates a speaker unit, to achieve good reproduction in an intermediate band between two bands of a super low-frequency sound reproduction band obtained by vibrating the speaker unit and a low-frequency sound reproduction band obtained by vibration of a cone of the speaker unit. [Solution] In the intermediate frequency band between the super low-frequency sound reproduction band obtained by vibration of the speaker unit and the low-frequency sound reproduction band obtained by vibration of the cone of the speaker unit, a low-frequency sound resonator is provided in a cabinet of the speaker system to bring the low-frequency sound reproduction band obtained by vibration of the cone of the speaker unit in the direction of a resonance frequency of the resonator, whereby it becomes possible to enhance reproduction performance in the intermediate frequency band between the low-frequency sound reproduction band obtained by vibration of the speaker unit and the low-frequency sound reproduction band obtained by vibration of the cone of the speaker unit, reduce an interval therebetween, and increase driving power of a voice coil without increasing heat loss of the voice coil in the low-frequency sound reproduction band.
Inventors:
KAKUMOTO JUNICHI (JP)
Application Number:
PCT/JP2018/037441
Publication Date:
April 02, 2020
Filing Date:
October 05, 2018
Export Citation:
Assignee:
KAKUMOTO JUNICHI (JP)
International Classes:
H04R1/28
Foreign References:
| JP2015130581A | 2015-07-16 | |||
| JP2012039586A | 2012-02-23 | |||
| JP2005341057A | 2005-12-08 | |||
| US20170070810A1 | 2017-03-09 |
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