JPS58197994A - Bass-reflex type loudspeaker cabinet - Google Patents
Bass-reflex type loudspeaker cabinetInfo
- Publication number
- JPS58197994A JPS58197994A JP8014182A JP8014182A JPS58197994A JP S58197994 A JPS58197994 A JP S58197994A JP 8014182 A JP8014182 A JP 8014182A JP 8014182 A JP8014182 A JP 8014182A JP S58197994 A JPS58197994 A JP S58197994A
- Authority
- JP
- Japan
- Prior art keywords
- bass
- cabinet
- reflex duct
- sound pressure
- bass reflex
- 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
- 230000011514 reflex Effects 0.000 claims abstract description 25
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 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
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
Abstract
Description
【発明の詳細な説明】
本発明は、バスレフ型スピーカキャビネ、トに関し、ス
ピーカキャビネットを動かさずに、即ちスピーカの位置
を変えずにバスレフダクトの位置を上下方向に変えられ
るようにして、よシ望ましい低音再生特性を得ようとす
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bass reflex type speaker cabinet, and provides an improved system in which the position of a bass reflex duct can be changed vertically without moving the speaker cabinet, that is, without changing the position of the speaker. This aims to obtain desirable bass reproduction characteristics.
スピーカシステムを部屋に設置する場合、一般にスピー
カシステムを床に近づけるほど低音が強調される。第１
図は無響室でのスピーカシステムの音圧周波数特性■と
、同じスピーカシステムｆ一般の部屋の床の上に置いた
時の音圧周波数特性■を示すグラフでスピーカシステム
を床に近づけると低音が強調されることがわかる。When installing a speaker system in a room, generally the closer the speaker system is to the floor, the more bass sounds will be emphasized. 1st
The figure shows the sound pressure frequency characteristics of a speaker system in an anechoic chamber and the sound pressure frequency characteristics of the same speaker system when placed on the floor of an ordinary room. can be seen to be emphasized.
また、バスレフのダクトもこれと同様に、床に近づける
ほどダクトから放射される低音が強調される。。第２図
は、バスレフダクトがキャビネット下部にあるスピーカ
システムを無響室に置いた時の音圧周波数特性■と、同
じスピーカシステムを一般の部屋の床の上に置いた時の
音圧周波数特性のグラフで、バスレフダクトを床に近づ
けると低音が強調されることがわかる。Similarly, the bass reflex duct is similar to this; the closer it is to the floor, the more the bass emitted from the duct is emphasized. . Figure 2 shows the sound pressure frequency characteristics when a speaker system with a bass reflex duct at the bottom of the cabinet is placed in an anechoic chamber, and the sound pressure frequency characteristics when the same speaker system is placed on the floor of an ordinary room. In the graph below, you can see that moving the bass reflex duct closer to the floor emphasizes the bass.
たとえば高さの高いスピーカシステムにおいては、スぎ
−カシステムは床の上にじかに置かれることになる。こ
れはスピーカユニットと耳の高さの位置を近づけるため
のものであるが、しかしこのために通常スピーカキャビ
ネットの下部に設けられることの多いバスレフダクトは
床に非常に近づくこととなり、低音が強調されることと
なる。For example, in tall speaker systems, the speaker system will be placed directly on the floor. This is to bring the speaker unit closer to ear level, but for this reason, the bass reflex duct, which is usually installed at the bottom of the speaker cabinet, is placed very close to the floor, which emphasizes the bass. The Rukoto.
また逆に、バスレフダクトがキャビネットの上〜中部に
設けられたものにおいては低音が不足することもある。On the other hand, if the bass reflex duct is installed in the upper or middle part of the cabinet, the bass may be insufficient.
従ってスピーカシステムの設置場所に応じてバスレフダ
クトの位置を可変できれば、望ましい低音再生特性を得
るために非常に大きな効果を持つこととなるものである
。Therefore, if the position of the bass reflex duct can be varied depending on the installation location of the speaker system, it will have a very large effect in obtaining desirable bass reproduction characteristics.
本発明は、バスレフダクトの位置を可変できるようＫし
て低音再生特性を良好なものにしようとするものである
。第３図は本発明にょる一実施例で、バスレフダクト取
付板４ａはバスレフダクトがキャビネ、ト下部にくるべ
く取り付けられているが、これを第４図のように逆に取
シ付けることによシ、バスレフダクトをキャビネ、ト上
部にくるようにできる。この取付法による低音再生特性
の変化を第５図に示す。第５図■ａは一般の部屋の床の
上に、バスレフダクトをキャビネット下部に付けて置い
た時の音圧周波数特性、■ｂは、同じスピーカシステム
をバスレフダクトをキャビネ、ト上部に付けて同様に部
屋の床の上に置いた時の音圧周波数特性を示すグラフで
、バスレフダクトが下部にある時は５０Ｈｚ付近が強調
されすぎているが、これを上部に付けることにょシこれ
が改善されることが分かる。逆に低音が不足する場合は
バスレフダクトを下部に付けることが良いわけである。The present invention aims to improve bass reproduction characteristics by making the position of the bass reflex duct variable. Fig. 3 shows an embodiment of the present invention, in which the bass reflex duct mounting plate 4a is installed so that the bass reflex duct is located at the bottom of the cabinet, but it is possible to install it in the opposite direction as shown in Fig. 4. Yes, you can place the bass reflex duct at the top of the cabinet. FIG. 5 shows changes in bass reproduction characteristics due to this mounting method. Figure 5 ■a shows the sound pressure frequency characteristics when the bass reflex duct is attached to the bottom of the cabinet on the floor of a general room, and ■b shows the sound pressure frequency characteristics when the same speaker system is installed with the bass reflex duct attached to the top of the cabinet. Similarly, in the graph showing the sound pressure frequency characteristics when placed on the floor of a room, when the bass reflex duct is at the bottom, the area around 50Hz is overemphasized, but this was improved by placing it at the top. I understand that. On the other hand, if the bass is insufficient, it is better to attach a bass reflex duct at the bottom.
第６図はバスレフダクト取付板が正方形ダクトの位置を
４カ所選ぶことができる。第７図ではバスレフダクト取
付板４ａの他にめくら板４ｂがあり、これらを取シ替え
て取付けることにより、バスレフダクトの位置を可変す
ることができるものである。In Figure 6, the bass reflex duct mounting plate allows you to select four positions for the square duct. In FIG. 7, there is a blind plate 4b in addition to the bass reflex duct mounting plate 4a, and by replacing and attaching these, the position of the bass reflex duct can be varied.
以上のように本発明によれば、バスレフダクトの位置を
可変にすることによシ望ましい低音再生特性を得ること
ができる。As described above, according to the present invention, desirable bass reproduction characteristics can be obtained by making the position of the bass reflex duct variable.
第１図は、スピーカシステムを一般の部屋に置いた場合
の低音の増加の様子を示す音圧周波数特性図、第２図は
バスレフダクトがキャビネット下部にあるスぎ一カシス
テムを一般の部屋の床の上に置いた時の、低音の強調さ
れすぎた例を示す音圧周波数特性図、第３図、第４図は
本発明にょる一実施例を示す図、第５図は、第３図、第
４図、のスピーカシステムによる音圧周波数特性図、第
６ 、！図、第７図は本発明による他の実施例を示
す図である。
ｌ・・・キャビネ、）、２・・・スピーカ、３・・・バ
スレフダクト、４ｍ・・・バスレフダクト取付板、４ｂ
・・・めくら板。
第１図
褐限数（Ｈｚ）
第３図
第２図
褐に敷（Ｈｚ ）
第４図Figure 1 is a sound pressure frequency characteristic diagram showing the increase in bass when the speaker system is placed in an ordinary room, and Figure 2 is a sound pressure frequency characteristic diagram showing the increase in bass when the speaker system is placed in an ordinary room. A sound pressure frequency characteristic diagram showing an example of over-emphasized bass when placed on the floor; FIGS. 3 and 4 are diagrams showing one embodiment of the present invention; FIG. Sound pressure frequency characteristic diagram of the speaker system shown in Fig. 4, Fig. 6,! 7 are diagrams showing other embodiments according to the present invention. l...Cabinet, ), 2...Speaker, 3...Bass reflex duct, 4m...Bass reflex duct mounting plate, 4b
...Blind board. Figure 1 Brown limit number (Hz) Figure 3 Figure 2 Brown limit number (Hz) Figure 4
Claims (1)
徴と、するバスレフ型スピーカキャビネット。A bass reflex type speaker cabinet characterized by making the position of the bass reflex duct variable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8014182A JPS58197994A (en) | 1982-05-14 | 1982-05-14 | Bass-reflex type loudspeaker cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8014182A JPS58197994A (en) | 1982-05-14 | 1982-05-14 | Bass-reflex type loudspeaker cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58197994A true JPS58197994A (en) | 1983-11-17 |
Family
ID=13709977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8014182A Pending JPS58197994A (en) | 1982-05-14 | 1982-05-14 | Bass-reflex type loudspeaker cabinet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58197994A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011199824A (en) * | 2010-02-25 | 2011-10-06 | Yamaha Corp | Acoustic structure including helmholtz resonator |
-
1982
- 1982-05-14 JP JP8014182A patent/JPS58197994A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011199824A (en) * | 2010-02-25 | 2011-10-06 | Yamaha Corp | Acoustic structure including helmholtz resonator |
| US8731224B2 (en) | 2010-02-25 | 2014-05-20 | Yamaha Corporation | Acoustic structure including helmholtz resonator |
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