JPS6161597B2 - - Google Patents
Info
- Publication number
- JPS6161597B2 JPS6161597B2 JP3061480A JP3061480A JPS6161597B2 JP S6161597 B2 JPS6161597 B2 JP S6161597B2 JP 3061480 A JP3061480 A JP 3061480A JP 3061480 A JP3061480 A JP 3061480A JP S6161597 B2 JPS6161597 B2 JP S6161597B2
- Authority
- JP
- Japan
- Prior art keywords
- cabinet
- diaphragm
- speaker
- main cabinet
- sound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005855 radiation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000011514 reflex Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/283—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm
- H04R1/2834—Enclosures comprising vibrating or resonating arrangements using a passive diaphragm for loudspeaker transducers
Description
【発明の詳細な説明】
本発明はメインキヤビネツトに取付けたスピー
カの放射面側をサブキヤビネツトで覆い、このサ
ブキヤビネツトに振動板等の音響質量を設け、上
記サブキヤビネツトのコンプライアンスと上記音
響質量の共振を利用して特定の周波数帯域のみを
再生させるようにしたスピーカシステムに関し、
特に上記メインキヤビネツトの容積による負荷を
軽減してシステム全体の容積を小さくするように
したものである。DETAILED DESCRIPTION OF THE INVENTION The present invention covers the radiation surface side of a speaker attached to a main cabinet with a sub-cabinet, and provides an acoustic mass such as a diaphragm in this sub-cabinet to improve the compliance of the sub-cabinet and the resonance of the acoustic mass. Regarding speaker systems that use this technology to reproduce only specific frequency bands,
In particular, the load due to the volume of the main cabinet is reduced to reduce the volume of the entire system.
第１図はこの種の従来のスピーカシステムを示
すものであり、１はメインキヤビネツト、２はそ
の前面に取付けられたスピーカ、３は上記スピー
カ２の放射面側を覆うサブキヤビネツト、４はサ
ブキヤビネツト３の前面に取付けられた振動板、
５は振動板４を支持するエツジである。 FIG. 1 shows this type of conventional speaker system, with 1 being a main cabinet, 2 a speaker attached to the front of the main cabinet, 3 a subcabinet covering the radiation surface side of the speaker 2, and 4 a subcabinet. The diaphragm attached to the front of 3,
5 is an edge that supports the diaphragm 4.
第２図は第１図の機械系等価回路を示すもので
あり、M1，C1，R1はスピーカ２、C2はメインキ
ヤビネツト１のコンプライアンス、C3はサブキ
ヤビネツト３のコンプライアンス、M2はエツジ
５の質量、C4は振動板４のコンプライアンス、
Ｆは駆動力、Ｖは速度である。 Figure 2 shows the mechanical equivalent circuit of Figure 1, where M 1 , C 1 , and R 1 are the speaker 2, C 2 is the compliance of the main cabinet 1, C 3 is the compliance of the subcabinet 3, and M 2 is the mass of edge 5, C 4 is the compliance of diaphragm 4,
F is driving force and V is speed.
第２図からわかるように、C3，C4，M2の反共
振点の近傍において、C4，M2を流れる速度Ｖが
最大となる。したがつて第１図のスピーカシステ
ムの全体の音圧はその反共振点foで最大となる。
すなわち第１図のスピーカシステムにおいてはサ
ブキヤビネツト３と振動板４とで音響的なフイル
タが構成され、このフイルタで選択される特定の
周波数帯域のみが再生されることになる。 As can be seen from FIG. 2, the velocity V flowing through C 4 and M 2 reaches its maximum near the anti-resonance points of C 3 , C 4 and M 2 . Therefore, the overall sound pressure of the speaker system shown in FIG. 1 is maximum at its anti-resonance point fo.
That is, in the speaker system shown in FIG. 1, the subcabinet 3 and the diaphragm 4 constitute an acoustic filter, and only a specific frequency band selected by this filter is reproduced.
ところが、第２図からもわかるように、サブキ
ヤビネツト３を設けることによる効果を最大限に
発揮させるためにはメインキヤビネツト１のコン
プライアンスC2を十分大きくしておく必要があ
り、そのためにはメインキヤビネツト１を大きく
しなければならないという問題がある。 However, as can be seen from Figure 2, in order to maximize the effect of providing the subcabinet 3, it is necessary to make the compliance C 2 of the main cabinet 1 sufficiently large. There is a problem in that the cabinet 1 must be made larger.
本発明はこのような従来の問題を解決するよう
にしたスピーカシステムを提供するものである。 The present invention provides a speaker system that solves these conventional problems.
以下本発明の一実施例について第３図とともに
説明する。 An embodiment of the present invention will be described below with reference to FIG.
第３図において第１図と同一符号の部分は同一
機能を有している。６はメインキヤビネツト１内
に設けられた吸音用キヤビネツト、７は吸音用振
動板、８は振動板７を支持するエツジである。 In FIG. 3, parts with the same symbols as in FIG. 1 have the same functions. Reference numeral 6 denotes a sound absorbing cabinet provided within the main cabinet 1, 7 a sound absorbing diaphragm, and 8 an edge supporting the diaphragm 7.
第３図の機械系等価回路を第４図に示す。第４
図においてＦ、M1，C1，R1，C2，C3，C4，M2は
第２図と同じであり、MAは吸音用振動板７の質
量、CAは吸音用キヤビネツト６とエツジ８のコ
ンプライアンスである。 FIG. 4 shows the mechanical equivalent circuit of FIG. 3. Fourth
In the figure, F, M 1 , C 1 , R 1 , C 2 , C 3 , C 4 , and M 2 are the same as in Figure 2, MA is the mass of the sound-absorbing diaphragm 7, and CA is the mass of the sound-absorbing cabinet 6. This is Edge 8's compliance.
第４図から明らかなように、第３図のように構
成すれば、MA，CAによる直列共振点において
メインキヤビネツト１のコンプライアンスC2は
無視できる。したがつて使用帯域の中心周波数fo
付近にMA，CAの共振点を合わせておけば、メ
インキヤビネツト１のコンプライアンスC2とは
無関係に、中心周波数fo付近での再生音圧レベル
を十分大きくすることができ、その結果、メイン
キヤビネツト１は容積の小さなもので済むことに
なる。 As is clear from FIG. 4, if the configuration is as shown in FIG. 3, the compliance C2 of the main cabinet 1 can be ignored at the series resonance point due to MA and CA. Therefore, the center frequency fo of the band used
By aligning the resonance points of MA and CA nearby, the reproduced sound pressure level near the center frequency fo can be made sufficiently large, regardless of the compliance C 2 of main cabinet 1, and as a result, the main The cabinet 1 can have a small volume.
なお、本発明は第５図に示すようにメインキヤ
ビネツト３にバスレフポート等の開口９による音
響質量を設けた場合、第６図に示すように吸音用
キヤビネツト６に開口１０を設けた場合、第７図
に示すように双方に開口９，１０を設けた場合に
も同等の効果が得られる。 Note that the present invention is applicable to the case where the main cabinet 3 is provided with an acoustic mass through an opening 9 such as a bass reflex port, as shown in FIG. The same effect can be obtained even when openings 9 and 10 are provided on both sides as shown in FIG.
以上のように本発明によれば、メインキヤビネ
ツト内に設けた吸音用キヤビネツトと吸音用振動
板またはそれと等価な音響質量によりメインキヤ
ビネツトの負荷を軽減することができるから、小
型で高効率のスピーカシステムを構成することが
できる。 As described above, according to the present invention, the load on the main cabinet can be reduced by the sound-absorbing cabinet and the sound-absorbing diaphragm provided in the main cabinet, or an equivalent acoustic mass, resulting in a compact and high-performance main cabinet. An efficient speaker system can be constructed.
第１図、第２図は従来例の断面図およびその機
械系等価回路図、第３図、第４図は本発明の一実
施例の断面図およびその機械系等価回路図、第５
図〜第７図は本発明の他の実施例の断面図であ
る。
１……メインキヤビネツト、２……スピーカ、
３……サブキヤビネツト、４……振動板、５……
エツジ、６……吸音用キヤビネツト、７……吸音
用振動板、８……エツジ、９，１０……開口。
1 and 2 are a cross-sectional view of a conventional example and its mechanical equivalent circuit diagram, FIGS. 3 and 4 are a cross-sectional view of an embodiment of the present invention and its mechanical equivalent circuit diagram, and FIG.
7 to 7 are cross-sectional views of other embodiments of the present invention. 1...Main cabinet, 2...Speaker,
3...Subcabinet, 4...Diaphragm, 5...
Edge, 6... Sound absorbing cabinet, 7... Sound absorbing diaphragm, 8... Edge, 9, 10... Opening.
Claims (1)
のスピーカの放射面側をサブキヤビネツトで覆
い、上記サブキヤビネツトに振動板またはそれと
等価な音響質量を設け、さらに上記メインキヤビ
ネツトの内部に吸音用キヤビネツトを設けるとと
もに上記吸音用キヤビネツトに振動板またはそれ
と等価な音響質量を設けたことを特徴とするスピ
ーカシステム。1. A speaker is attached to the main cabinet, the radiation surface side of the speaker is covered with a sub-cabinet, a diaphragm or an equivalent acoustic mass is provided on the sub-cabinet, and a sound-absorbing cabinet is provided inside the main cabinet. A speaker system characterized in that the sound absorbing cabinet is provided with a diaphragm or an acoustic mass equivalent thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061480A JPS56126397A (en) | 1980-03-10 | 1980-03-10 | Speaker system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3061480A JPS56126397A (en) | 1980-03-10 | 1980-03-10 | Speaker system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56126397A JPS56126397A (en) | 1981-10-03 |
| JPS6161597B2 true JPS6161597B2 (en) | 1986-12-26 |
Family
ID=12308744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3061480A Granted JPS56126397A (en) | 1980-03-10 | 1980-03-10 | Speaker system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56126397A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991019406A1 (en) * | 1990-05-25 | 1991-12-12 | Mitsubishi Denki Kabushiki Kaisha | Speaker system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0759118B2 (en) * | 1986-02-24 | 1995-06-21 | 株式会社創研 | Speaker Enclosure |
| JPS63139500A (en) * | 1986-12-02 | 1988-06-11 | Shuji Kasagi | Speaker device |
| JPS63149689U (en) * | 1987-03-20 | 1988-10-03 | ||
| WO2007129774A2 (en) * | 2006-05-09 | 2007-11-15 | Atsushi Yamada | Acoustic transmission path, speaker system using the same and tube module for assembly kit of acoustic transmission path |
-
1980
- 1980-03-10 JP JP3061480A patent/JPS56126397A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991019406A1 (en) * | 1990-05-25 | 1991-12-12 | Mitsubishi Denki Kabushiki Kaisha | Speaker system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56126397A (en) | 1981-10-03 |
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