JPH0322796A - Cabinet structure of loudspeaker - Google Patents
Cabinet structure of loudspeakerInfo
- Publication number
- JPH0322796A JPH0322796A JP15752489A JP15752489A JPH0322796A JP H0322796 A JPH0322796 A JP H0322796A JP 15752489 A JP15752489 A JP 15752489A JP 15752489 A JP15752489 A JP 15752489A JP H0322796 A JPH0322796 A JP H0322796A
- Authority
- JP
- Japan
- Prior art keywords
- sound pressure
- acoustic
- phase inversion
- front side
- acoustic pressure
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Details Of Audible-Bandwidth Transducers (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利用分野〉
本発明は、スビーカのキャビネット構造に関し、さらに
詳しくは、低音域を再生するスビーカ（ウーファ）のキ
ャビネット構造に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker cabinet structure, and more particularly, to a speaker cabinet structure for reproducing bass frequencies (woofers).
〈従来の技術〉
従来、低音域のみを再生するスピーカのキャビネット構
造として、第３図に示されるものがある。<Prior Art> Conventionally, there is a cabinet structure for a speaker that reproduces only a low frequency range, as shown in FIG. 3.
このキャビネット構造は、「ケルトン形」と称されるも
のであり、スピーカユニット１の前面側に設けられた孔
２のあいた筺体３によって、該筺体３内の空気Ｒ４およ
び孔２内の空気５に対応した音響質量からなる低域通過
用の音響フィルタ６が構成され、スピーカユニット１の
後面側には、密閉形のキャビネット９が設けられる。This cabinet structure is called a "Kelton type", and a housing 3 with holes 2 provided on the front side of the speaker unit 1 allows air R4 inside the housing 3 and air 5 inside the holes 2 to be connected to each other. A low-pass acoustic filter 6 made of a corresponding acoustic mass is configured, and a closed cabinet 9 is provided on the rear side of the speaker unit 1.
〈発明が解決しようとする課題〉
第４図は、かかる従来のスピーカの出力音圧特性図であ
り、横軸は周波数を、縦軸は音圧の０１女、ｔレベルを
それぞれ示している。この第４図に示されるように、ケ
ルトン形のキャビネット構造では、低域通過フィルタと
しての特仕が得られるけれども、密閉形のキャビネット
９であるために、平担な音圧レベルから低域に向かって
音圧レベルが下がり始める周波数、すなわち、低域限界
周波数付近での音圧が十分にとれないという難点がある
。<Problems to be Solved by the Invention> FIG. 4 is a diagram showing the output sound pressure characteristics of such a conventional speaker, in which the horizontal axis shows the frequency, and the vertical axis shows the sound pressure level. As shown in Fig. 4, the Kelton-shaped cabinet structure provides a special feature as a low-pass filter, but since it is a closed cabinet 9, the sound pressure level is low. There is a drawback that sufficient sound pressure cannot be obtained at frequencies where the sound pressure level starts to decrease, that is, near the low limit frequency.
本発明は、上述の点に鑑みて為されたものであって、低
域限界周波数付近の音圧を向上させた低音再生用スピー
カのキャビネット構造を提洪することを目的とする。The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a cabinet structure for a bass reproduction speaker that improves the sound pressure near the low limit frequency.
く課題を解決するための手段〉
本発明では、上述の目的を達成するために、スピーカユ
ニットの前面側に、空気層および音響質量からなる低域
通過用の音響フィルタを備える低音再生用のスビーカの
キャビネット構造において、前記スピーカユニットの後
面側に、位相反転形キャビネットを装着して構成されて
いる。Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention provides a speaker unit for bass reproduction, which is equipped with a low-pass acoustic filter made of an air layer and an acoustic mass on the front side of a speaker unit. In the cabinet structure, a phase inversion type cabinet is attached to the rear side of the speaker unit.
〈作用〉
上記構戊によれば、位相反転形キャビネットのダクト部
から放射される音圧と、スピーカユニット前面側の音響
フィルタから放射される音圧とかたし合わされて低域限
界周波数付近での音圧が上昇することになる。<Function> According to the above structure, the sound pressure radiated from the duct part of the phase inversion type cabinet and the sound pressure radiated from the acoustic filter on the front side of the speaker unit are combined, and the sound pressure near the low limit frequency is The sound pressure will increase.
〈実施例〉
以下、図面によって本発明の実施例について、詳細に説
明する。<Examples> Examples of the present invention will be described in detail below with reference to the drawings.
第１図は、本発明の一実施例のキャビネット構造を示す
断面図であり、第３図の従来例に対応する部分には、同
一の参照符を付す。FIG. 1 is a sectional view showing a cabinet structure according to an embodiment of the present invention, and parts corresponding to the conventional example shown in FIG. 3 are given the same reference numerals.
このスピーカは、低音域のみを再生するスピー力、いわ
ゆる、ウーファであり、スピーカユニットｌの前面側に
は、上述の従来例と同様に、孔２のあいた筺体３によっ
て、空気層４および孔２の空気５に対応した音響質量か
らなる低域通過用の音響フィルタ６が構戊されている。This speaker is a so-called woofer that reproduces only the low frequency range, and the front side of the speaker unit l is provided with an air layer 4 and a hole 2 by a housing 3 with holes 2, as in the above-mentioned conventional example. A low-pass acoustic filter 6 having an acoustic mass corresponding to the air 5 is constructed.
この実施例では、低域限界周波数付近での音圧を向上さ
せるために、スピーカユニットＩの後面側に、位相反転
形キャビネット７を装着して構成している。In this embodiment, a phase inversion type cabinet 7 is attached to the rear side of the speaker unit I in order to improve the sound pressure near the low limit frequency.
第２図は、第１図のスピーカの出力音圧特性図であり、
横軸は周波数を、縦軸は音圧の相対レベルをそれぞれ示
している。FIG. 2 is an output sound pressure characteristic diagram of the speaker in FIG. 1,
The horizontal axis shows the frequency, and the vertical axis shows the relative level of sound pressure.
スピーカユニットＩの後面ｆｆｌｌ＋を位相反転形キャ
ビネット７にすることにより、スピーカユニソト１の前
面側の音響フィルタ６より放射される音圧の特性は、第
２図の一点鎖線で示されるようになり、また、位相反転
形キャビネット７のダクト部８より放射される音圧の特
性は、破線で示されるようになり、最終的に両者かたし
合わされて実線で示されるような音圧特性、すなわち、
低域限界周波数付近での音圧レベルが向上した特性とな
る。By making the rear ffll+ of the speaker unit I a phase inversion type cabinet 7, the characteristics of the sound pressure radiated from the acoustic filter 6 on the front side of the speaker unit 1 become as shown by the dashed line in FIG. Also, the characteristics of the sound pressure radiated from the duct part 8 of the phase inversion type cabinet 7 are shown by the broken line, and the sound pressure characteristics are finally added together to form the sound pressure characteristics shown by the solid line, that is,
The sound pressure level near the low limit frequency is improved.
このように、スピーカユニットｌの後面側を、従来のよ
うな密閉形でなく、位相反転形のキャビネット７にする
ことにより、低域限界周波数付近での音圧レベルを向上
させることができる。In this way, by forming the rear side of the speaker unit l into a phase inversion type cabinet 7 instead of a closed type as in the conventional case, the sound pressure level near the low limit frequency can be improved.
なお、本発明の他の実施例として、位相反転形キャビネ
ット７のダクト部８としてパッシブラジエー夕を用いて
もよい。In addition, as another embodiment of the present invention, a passive radiator may be used as the duct portion 8 of the phase inversion type cabinet 7.
また、上述の音響フィルタ６の筺体３の孔２の部分、す
なわち、音響質量をパッシブラジエー夕に置き換えても
よい。Further, the hole 2 portion of the housing 3 of the acoustic filter 6, ie, the acoustic mass, may be replaced with a passive radiator.
〈発明の効果〉
以上のように本発明によれば、スピーカユニットの前面
側に、低域通過用の音響フィルタを備え、前記スピーカ
ユニットの後面側に、位相反転形キャビネットを装着し
たので、位相反転形キャビネットのダクト部から放射さ
れる音圧と、スピーカユニット前面側の音響フィルタか
ら放射される音圧とかたし合わされて低域限界周波数付
近での音圧レベルが上昇することになる。<Effects of the Invention> As described above, according to the present invention, a low-pass acoustic filter is provided on the front side of the speaker unit, and a phase inversion type cabinet is mounted on the rear side of the speaker unit. The sound pressure radiated from the duct part of the inverted cabinet and the sound pressure radiated from the acoustic filter on the front side of the speaker unit are combined, and the sound pressure level near the low limit frequency increases.
第１図は本発明の一実施例の断面図、第２図は第ｌ図の
実施例の出力音圧特性図、第３図は従来例の断面図、第
４図は第３図の従来例の出カ音圧特性図である。
１・・・スピーカユニット、６・・・音響フィルタ、７
・・・位相反転形キャビネット。Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is an output sound pressure characteristic diagram of the embodiment shown in Fig. 1, Fig. 3 is a sectional view of a conventional example, and Fig. 4 is a conventional example of Fig. 3. FIG. 3 is an example output sound pressure characteristic diagram. 1... Speaker unit, 6... Acoustic filter, 7
...Phase reversal type cabinet.
Claims (1)
質量からなる低域通過用の音響フィルタを備える低音再
生用のスピーカのキャビネット構造において、 前記スピーカユニットの後面側に、位相反転形キャビネ
ットを装着してなることを特徴とするスピーカのキャビ
ネット構造。(1) In a speaker cabinet structure for bass reproduction that includes a low-pass acoustic filter made of an air layer and acoustic mass on the front side of the speaker unit, a phase inversion type cabinet is attached to the rear side of the speaker unit. A speaker cabinet structure characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15752489A JPH0322796A (en) | 1989-06-20 | 1989-06-20 | Cabinet structure of loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15752489A JPH0322796A (en) | 1989-06-20 | 1989-06-20 | Cabinet structure of loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0322796A true JPH0322796A (en) | 1991-01-31 |
Family
ID=15651554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15752489A Pending JPH0322796A (en) | 1989-06-20 | 1989-06-20 | Cabinet structure of loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0322796A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1221823A3 (en) * | 2001-01-02 | 2004-11-17 | Bose Corporation | Electroacoustic waveguide transducing |
| US6981570B2 (en) * | 2002-05-09 | 2006-01-03 | Dalbec Richard H | Loudspeaker system with common low and high frequency horn mounting |
| US7628274B2 (en) | 2004-12-28 | 2009-12-08 | Prairie Dog Co., Ltd. | Cake-shaped decorative accessory made of a towel in a cup |
| US7698875B2 (en) | 2004-12-28 | 2010-04-20 | Prairie Dog Co., Ltd. | Method of manufacturing a cake-shaped decorative accessory made of a towel |
| WO2010074206A1 (en) * | 2008-12-26 | 2010-07-01 | パナソニック電工株式会社 | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
| JP2010157886A (en) * | 2008-12-26 | 2010-07-15 | Panasonic Electric Works Co Ltd | Piezoelectric audio device |
| JP2013509049A (en) * | 2009-10-23 | 2013-03-07 | ブループリント アコースティックス ピーティーワイ リミテッド | Loudspeaker assembly and system |
-
1989
- 1989-06-20 JP JP15752489A patent/JPH0322796A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1221823A3 (en) * | 2001-01-02 | 2004-11-17 | Bose Corporation | Electroacoustic waveguide transducing |
| US7426280B2 (en) | 2001-01-02 | 2008-09-16 | Bose Corporation | Electroacoustic waveguide transducing |
| US8175311B2 (en) | 2001-01-02 | 2012-05-08 | Aylward J Richard | Electroacoustic waveguide transducing |
| US6981570B2 (en) * | 2002-05-09 | 2006-01-03 | Dalbec Richard H | Loudspeaker system with common low and high frequency horn mounting |
| US7628274B2 (en) | 2004-12-28 | 2009-12-08 | Prairie Dog Co., Ltd. | Cake-shaped decorative accessory made of a towel in a cup |
| US7698875B2 (en) | 2004-12-28 | 2010-04-20 | Prairie Dog Co., Ltd. | Method of manufacturing a cake-shaped decorative accessory made of a towel |
| WO2010074206A1 (en) * | 2008-12-26 | 2010-07-01 | パナソニック電工株式会社 | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
| JP2010157886A (en) * | 2008-12-26 | 2010-07-15 | Panasonic Electric Works Co Ltd | Piezoelectric audio device |
| US9031265B2 (en) | 2008-12-26 | 2015-05-12 | Panasonic Intellectual Property Management Co., Ltd. | Piezoelectric speaker, piezoelectric audio device employing piezoelectric speaker, and sensor with alert device attached |
| JP2013509049A (en) * | 2009-10-23 | 2013-03-07 | ブループリント アコースティックス ピーティーワイ リミテッド | Loudspeaker assembly and system |
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