JPS6333996A - Speaker equipment - Google Patents

Speaker equipment

Info

Publication number
JPS6333996A
JPS6333996A JP17793186A JP17793186A JPS6333996A JP S6333996 A JPS6333996 A JP S6333996A JP 17793186 A JP17793186 A JP 17793186A JP 17793186 A JP17793186 A JP 17793186A JP S6333996 A JPS6333996 A JP S6333996A
Authority
JP
Japan
Prior art keywords
speaker
grill plate
horn
speaker grill
diffuser
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
Application number
JP17793186A
Other languages
Japanese (ja)
Inventor
Takao Oura
尾浦 孝夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP17793186A priority Critical patent/JPS6333996A/en
Publication of JPS6333996A publication Critical patent/JPS6333996A/en
Pending legal-status Critical Current

Links

Landscapes

  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

PURPOSE:To remarkably reduce the number of components and assembling man-hour by fitting components such as a horn, an acousticlens, a diffuser, a port cover, a control window and a company trade mark badge to a speaker grill plate so as to allow incorporated structure. CONSTITUTION:The horn 9, the acousticlens 10 and the port cover 11 are fitted integratedly to the upper front plate 18 of the speaker grill plate 12. The components are integrated in this way to reduce the number of components remarkably and the structure is simplified to reduce the barrier and resonance part of sound being important in the acoustic technique. In removing the speaker grill plate 12, it is used as a standard type bass reflex system speaker equipment without the horn 9, the acoustic lens 10, the diffuser 20 and the port cover 11. Especially, the speaker grill plate is formed as integrated structure and has a strength to offer prevention of stain and protection against external shock.

Description

【発明の詳細な説明】 [産業上の利用分野コ この発明は、複数のスピーカーユニットをキャビネット
に取付けたスピーカー本体に、ホーン、音響レンズ及び
グリル板等を装着するようにしたスピーカー装置に関す
る。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a speaker device in which a horn, an acoustic lens, a grill plate, etc. are attached to a speaker body in which a plurality of speaker units are attached to a cabinet.

[従来の技術] 第3図、第4図は従来のスピーカー装置を示す斜視図及
び分解斜視図で、図において(1)はスピーカー本体キ
ャビネット、(2)はそれの前面バッフル、(3) (
4) (5)は前面バッフル(2)に取付けられた高域
スピーカーユニット、中域スピーカーユニット、低域ス
ピーカーユニット、(6)は前面バッフル(2)に設け
られたバスレフ用ポート穴、(7)は同じく前面バッフ
ル(2)に取付けられたレベルコントロール用つまみ、
(8)は本体キャビネット(1)。
[Prior Art] Figures 3 and 4 are a perspective view and an exploded perspective view showing a conventional speaker device, in which (1) is a speaker main body cabinet, (2) is a front baffle thereof, and (3)
4) (5) is a high-range speaker unit, a mid-range speaker unit, and a low-range speaker unit attached to the front baffle (2), (6) is a bass reflex port hole provided in the front baffle (2), and (7) ) is the level control knob also attached to the front baffle (2),
(8) is the main cabinet (1).

前面バッフル(2)、スピーカーユニット(3) (4
) (5)、バスレフ用ポート穴(6)及びレベルコン
トロール用つまみ(7)からなるスピーカー本体、(9
)はスピーカー本体(8)の高域スピーカーユニット(
3)の前面に取付けられるホーン、(10)は中域スピ
ーカーユニット(4)の前面に取付けられる音響レンズ
、(11)はバスレフ用ポート穴(6)を開閉するポー
ト開閉蓋、(12)はスピーカー本体(8)の前面に着
脱可能に装着されるスピーカーグリル板、(13)はこ
のスピーカーグリル板(12)の枠体、 (14)はス
ピーカーグリル板(12)の補強桟、(15)はスピー
カーグリル板(12)の枠体(13)に緊張された合成
樹脂製ネット、(16)はスピーカーグリル板(12)
のネット(15)の上から枠体(13)に取付けられる
社標などのバッジ、(17)はスピーカー本体(8)の
前面にスピーカーグリル板(12)を着脱可能に装着す
るための装着部である。
Front baffle (2), speaker unit (3) (4
) (5), speaker body consisting of bass reflex port hole (6) and level control knob (7), (9
) is the high frequency speaker unit (
3) is the horn that is attached to the front of the unit, (10) is the acoustic lens that is attached to the front of the midrange speaker unit (4), (11) is the port opening/closing lid that opens and closes the bass reflex port hole (6), and (12) is the port opening/closing lid that opens and closes the bass reflex port hole (6). A speaker grill plate that is removably attached to the front of the speaker body (8), (13) is the frame of this speaker grill plate (12), (14) is a reinforcing crosspiece of the speaker grill plate (12), (15) (16) is a synthetic resin net stretched over the frame (13) of the speaker grill plate (12), and (16) is the speaker grill plate (12).
A badge such as a company logo is attached to the frame body (13) from above the net (15), and (17) is a mounting part for removably attaching the speaker grill plate (12) to the front of the speaker body (8). It is.

従来のスピーカー装置においては、上述のようにスピー
カー本体(8)の前面に取付けられるスピーカーグリル
板(12)は、合成樹脂製ネット(15)又は布等を合
成樹脂、木、金属等からなる額縁状の枠体(13)に緊
張固定してなり、外部からの衝撃、はこりなどから保護
するためのものであった。そして各スピーカーユニット
(3) (4) (5)の音響効果を上げるためのホー
ン(9)、音響レンズ(10)またはデイフユーザ等や
ポート開閉蓋(11)はスピーカーグリル板(12)と
は別にスピーカー本体(8)に直接取付けられていた。
In conventional speaker devices, the speaker grill plate (12) attached to the front of the speaker body (8) as described above is a synthetic resin net (15) or a frame made of synthetic resin, wood, metal, etc. It was fixed under tension to a shaped frame (13) to protect it from external shocks, chips, etc. The horn (9), acoustic lens (10), diff user, etc. and port opening/closing cover (11) to improve the acoustic effect of each speaker unit (3) (4) (5) are separate from the speaker grill plate (12). It was attached directly to the speaker body (8).

[発明が解決しようとする問題点コ 従来のスピーカー装置は、上述のようにスピーカー本体
に、ホーン、音響レンズまたはデイフユーザ等の、スピ
ーカー本体とは別の音響部品を取付けた後、その前から
スピーカーグリル板をスピーカー本体に装着するように
しているため、スピーカーグリル板の奥行が大となり、
かつ強度上からも補強桟が必要となり音響特性上の障壁
部が多い構成にする必要があった。また、ホーン、音響
レンズまたはデイフユーザ等の音響部品をスピーカー本
体前面に個々に取付けるため、部品点数も多くなり、組
立工数、寸法精度等で高度の加工技術が要求される等、
コストが上昇し高価となるという問題点があった。また
、レベルコントロール等の操作をスピーカーグリル板を
装着したままでは行ない得ないという問題点もあった。
[Problems to be Solved by the Invention] In the conventional speaker device, as described above, after attaching an acoustic component separate from the speaker body, such as a horn, an acoustic lens, or a diffuser, to the speaker body, Since the grill plate is attached to the speaker body, the depth of the speaker grill plate becomes large.
In addition, reinforcing bars were required for strength reasons, and a structure with many barrier sections was required for acoustic characteristics. In addition, since acoustic parts such as horns, acoustic lenses, or differential users are individually attached to the front of the speaker body, the number of parts increases, and advanced processing technology is required in terms of assembly man-hours and dimensional accuracy.
There is a problem in that the cost increases and becomes expensive. Another problem was that operations such as level control could not be performed with the speaker grill plate attached.

この発明は上記のような問題点を解消するためになされ
たもので、スピーカーグリル板の奥行が小で音響特性上
の障壁部が少なくてすみ、がっ、操作性がよく安価に構
成できるスピーカー装置を得ることを目的とする。
This invention was made in order to solve the above-mentioned problems.The depth of the speaker grill plate is small, so there are fewer barriers for acoustic characteristics, and the speaker has good operability and can be constructed at low cost. The purpose is to obtain equipment.

[問題点を解決するための手段] この発明にかかるスピーカー装置は、ホーン、音響レン
ズ、ディフューザー及びポート開閉蓋等の音響部品を、
合成樹脂、木、金属等がらなり、レベルコントロール用
つまみに対向する位置に制御用窓を有するスピーカーグ
リル板に固着し、これらを一体にスピーカー本体に着脱
可能に装着したものである。
[Means for Solving the Problems] The speaker device according to the present invention includes acoustic components such as a horn, an acoustic lens, a diffuser, and a port opening/closing lid.
It is made of synthetic resin, wood, metal, etc., and is fixed to a speaker grill plate that has a control window opposite the level control knob, and is removably attached to the speaker body.

[作 用] この発明においては、ホーン、音響レンズ、ディフュー
ザー及びポート開閉蓋等の音響部品を。
[Function] In this invention, acoustic parts such as a horn, an acoustic lens, a diffuser, and a port opening/closing lid are used.

スピーカーグリル板に一体に固着したので、スピーカー
グリル板の奥行が小さくてすみ、音響特性も良好となり
、また、スピーカーグリル板に制御用窓を設けたので、
スピーカーグリル板を装着したままレベルコントロール
等の制御が行ないうる。
Since it is integrally fixed to the speaker grill plate, the depth of the speaker grill plate can be reduced and the acoustic characteristics are also good.Also, since a control window is provided on the speaker grill plate,
Controls such as level control can be performed while the speaker grill plate is attached.

[実施例] 以下、この発明の実施例を図について説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.

第1図、第2図はこの発明の一実施例を示す斜視図及び
分解斜視図で、図において(1)〜(12) (16)
(17)は第3図、第4図の従来例と同様であり、(1
)はスピーカー本体キャビネット、(2)はそれの前面
バッフル、(3) (4) (5)は前面バッフル(2
)に取付けられた高域スピーカーユニット、中域スピー
カーユニット、低域スピーカーユニット、(6)は前面
バッフル(2)に設けられたバスレフ用ポート穴、(7
)は同じく前面バッフル(2)に取付けられたレベルコ
ントロール用つまみ、(8)は本体キャビネット(1)
、前面バッフル(2)、スピーカーユニット(3)(4
)(5)、バスレフ用ポート穴(6)及びレベルコン1
〜ロール用つまみ(7)からなるスピーカー本体、(9
)は高域スピーカーユニット(3)用のホーン、(10
)は中域スピーカーユニット(4)用の音響レンズ、(
11)はバスレフ用ポート穴(6)を開閉するポート開
閉蓋、(12)はスピーカー本体(8)の前面に着脱可
能に装着されるスピーカーグリル板、(16)はスピー
カーグリル板(12)に取付けられる社標などのバッジ
、(17)はスピーカー本体(8)の前面にスピーカー
グリル板(12)を着脱可能に装着するための装着部で
、スピーカー本体(8)の前面及びスピーカーグリル板
(12)の裏面(図示されていない)に設けられている
。なお、(18)はスピーカーグリル板(12)の上部
前面板部で、これにホーン(9)。
1 and 2 are a perspective view and an exploded perspective view showing an embodiment of the present invention, and in the figures (1) to (12) (16)
(17) is the same as the conventional example shown in FIGS. 3 and 4, and (1
) is the speaker cabinet, (2) is its front baffle, (3) (4) (5) is the front baffle (2)
) are installed on the high-range speaker unit, mid-range speaker unit, and low-range speaker unit, (6) is the bass reflex port hole provided on the front baffle (2), (7)
) is the level control knob also attached to the front baffle (2), (8) is the main cabinet (1)
, front baffle (2), speaker unit (3) (4
) (5), port hole for bass reflex (6) and level controller 1
~Speaker body consisting of roll knob (7), (9
) is the horn for the high frequency speaker unit (3), (10
) is the acoustic lens for the mid-range speaker unit (4), (
11) is a port opening/closing lid that opens and closes the bass reflex port hole (6), (12) is a speaker grill plate that is removably attached to the front of the speaker body (8), and (16) is a speaker grill plate (12). Badges such as company logos (17) are attachment parts for removably attaching the speaker grill plate (12) to the front of the speaker body (8). 12) on the back surface (not shown). In addition, (18) is the upper front plate part of the speaker grill plate (12), and a horn (9) is attached to this.

音響レンズ(10)、ポート開閉蓋(11)が一体に固
着されており、 (19)は下部前面板部で、これには
、低域スピーカーユニット(5)からの音をデイフユー
ズする多数の鎧戸状の格子板からなるディフューザー(
20)が形成され、バッジ(16)が設けられている。
The acoustic lens (10) and the port opening/closing cover (11) are fixed together, and (19) is the lower front plate section, which has a number of shutters that diffuse the sound from the low-frequency speaker unit (5). A diffuser consisting of a shaped grid plate (
20) is formed and a badge (16) is provided.

 (21)はスピーカーグリル板(12)の上部前面板
部(18)の、スピーカー本体(8)のレベルコントロ
ール用つまみ(7)に対する位置に設けられた制御用窓
である。
(21) is a control window provided in the upper front plate portion (18) of the speaker grill plate (12) at a position relative to the level control knob (7) of the speaker body (8).

以上の構成において、スピーカーグリル板(12)を装
着部(17)によってスピーカー本体(8)に装着した
場合、スピーカーグリル板(12)のホーン(9)は高
域スピーカーユニット(3)の前面にありホーン効果を
、音響レンズ(10)は中域スピーカーユニット(4)
の前面にあり音響レンズ効果を、ディフューザー(20
)は低域スピーカーユニット(5)の前面にありデイフ
ユーザ効果をそれぞれ得る。ポート開閉蓋(11)は、
スピーカーグリル板(12)の装着時に、バスレフ用ポ
ート穴(6)を密閉して密閉方式スピーカー装置として
使用できる。また、スピーカーグリル板(12)の装着
時に、レベルコントロール用つまみ(7)の前面にスピ
ーカーグリル板(12)の開口部として制御用窓(21
)を設けたので、レベルコントロール等の操作がスピー
カーグリル板(12)装着のままできるようになってい
る。社標などのバッジ(16)はスピーカーグリル板(
12)の下部前面板部(19)に一体成型、ダイレクト
印刷或はホットスタンピング等により形成される。
In the above configuration, when the speaker grill plate (12) is attached to the speaker body (8) by the attachment part (17), the horn (9) of the speaker grill plate (12) is attached to the front of the high frequency speaker unit (3). Yes, horn effect, acoustic lens (10) and mid-range speaker unit (4)
In front of the acoustic lens effect, a diffuser (20
) are located in front of the low frequency speaker unit (5), and each obtains a differential user effect. The port opening/closing lid (11) is
When the speaker grill plate (12) is installed, the bass reflex port hole (6) can be sealed and used as a closed system speaker device. Also, when the speaker grill plate (12) is installed, a control window (21) is provided as an opening in the speaker grill plate (12) in front of the level control knob (7).
), so operations such as level control can be performed while the speaker grill plate (12) is attached. Badges (16) such as company marks are attached to the speaker grill plate (
12) is formed by integral molding, direct printing, hot stamping, etc. on the lower front plate portion (19).

このように、各部品の一体化により部品点数の大幅削減
とともに構造の単純化により音響上重要である音の障壁
、共振部が少なくなっている。
In this way, the number of parts is significantly reduced by integrating each part, and the structure is simplified, which reduces the number of acoustically important sound barriers and resonant parts.

スピーカーグリル板(12)を取りはずした時は、ホー
ン(9)、音響レンズ(10)、ディフューザー(20
)、ポート開閉蓋(11)のない標準タイプのバスレフ
方式スピーカー装置として使用できる。特にスピーカー
グリル板(12)は一体構造で強度もあり、汚れ防止、
外部からの衝撃と完全に対応できるものとなっている。
When the speaker grill plate (12) is removed, the horn (9), acoustic lens (10), diffuser (20)
), it can be used as a standard type bass reflex speaker device without a port opening/closing lid (11). In particular, the speaker grill plate (12) has a one-piece structure and is strong, prevents dirt,
It is completely resistant to external shocks.

以上の実施例では、スピーカーグリル板(12)として
標準的なスピーカシステムのグリル板を示したが、スピ
ーカーグリル板の着脱方式、着脱の方向などを変えるこ
とにより、各種の音響特性を選択できる新しい方式、使
用方法の提案が可能となる。また、低域スピーカーユニ
ット(5)のディフューザー(20)を金網、合成樹脂
製(サラン)ネットなどにしてもよい。
In the above embodiment, a standard speaker system grill plate was used as the speaker grill plate (12), but a new system that allows you to select various acoustic characteristics by changing the attachment/detachment method and attachment/detachment direction of the speaker grill plate (12). It becomes possible to propose methods and usage methods. Further, the diffuser (20) of the low-frequency speaker unit (5) may be made of a wire mesh, a synthetic resin (Saran) net, or the like.

[発明の効果] 以上のように、この発明によれば、ホーン、音響レンズ
、ディフューザー、ポート開閉蓋、制御用窓、社標など
のバッジ等をスピーカーグリル板に固着し一体構造とし
たので、大幅な部品点数。
[Effects of the Invention] As described above, according to the present invention, the horn, acoustic lens, diffuser, port opening/closing cover, control window, badges such as the company logo, etc. are fixed to the speaker grill plate to form an integrated structure. Significant number of parts.

組立工数の削減、強度1寸法精度の確保、音響特性上の
障壁部、共振部をなくし音響特性を向上でき、かつ、ス
ピーカーグリル板を取付けたままレベルコントロール等
の操作も可能となり、操作性が向上する等の効果がある
It reduces assembly man-hours, ensures strength and dimensional accuracy, improves acoustic characteristics by eliminating barriers and resonance areas for acoustic characteristics, and allows level control etc. to be operated with the speaker grill plate attached, improving operability. It has the effect of improving

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例を示す斜視図、第2図はそ
れの分解斜視図、第3図は従来のスピーカー装置を示す
斜視図、第4図はそれの分解斜視図である。 (1)はスピーカー本体キャビネット、(2)はそれの
前面バッフル、(3)は高域スピーカーユニット、(4
)は中域スピーカーユニット、(5)は低域スピーカー
ユニット、(6)はバスレフ用ポート穴、(7)はレベ
ルコントロール用つまみ、(8)はスピーカー本体、(
9)はホーン、(10)は音響レンズ、(11)はポー
ト開閉蓋、(12)はスピーカーグリル板、(16)は
社標などのバッジ、(17)は装着部、(18)は上部
前面板部、(19)は下部前面板部、(20)はディフ
ューザー1(2■)は制御用窓である。 図中、同一符号は、同−或は相当部分を示す。
FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view thereof, FIG. 3 is a perspective view showing a conventional speaker device, and FIG. 4 is an exploded perspective view thereof. (1) is the speaker main body cabinet, (2) is its front baffle, (3) is the high frequency speaker unit, (4
) is the mid-range speaker unit, (5) is the low-range speaker unit, (6) is the bass reflex port hole, (7) is the level control knob, (8) is the speaker body, (
9) is a horn, (10) is an acoustic lens, (11) is a port opening/closing lid, (12) is a speaker grill plate, (16) is a badge such as a company logo, (17) is a mounting part, and (18) is an upper part. The front plate part, (19) is the lower front plate part, and (20) is the diffuser 1 (2) is the control window. In the figures, the same reference numerals indicate the same or corresponding parts.

Claims (2)

【特許請求の範囲】[Claims] (1)本体キャビネットの前面バッフルにバスレフ用ポ
ート穴を設け、この前面バッフルに複数のスピーカーユ
ニット及びレベルコントロール用つまみを取付けたスピ
ーカー本体の前面に、各スピーカーユニット用のホーン
、音響レンズ、ディフューザー、上記バスレフ用ポート
穴開閉用のポート開閉蓋及びスピーカーグリル板を装着
するようにしたスピーカー装置において、上記ホーン、
音響レンズ、ディフューザー及びポート開閉蓋を、合成
樹脂、木、金属等からなり、上記レベルコントロール用
つまみに対向する位置に制御用窓を有する上記スピーカ
ーグリル板に固着し、これらを一体に上記スピーカー本
体に着脱可能に装着したことを特徴とするスピーカー装
置。
(1) A bass reflex port hole is provided on the front baffle of the main body cabinet, and multiple speaker units and level control knobs are attached to this front baffle.The front of the speaker body has a horn, acoustic lens, diffuser for each speaker unit, In the speaker device equipped with a port opening/closing cover for opening/closing the port hole for the bass reflex and a speaker grill plate, the horn,
An acoustic lens, a diffuser, and a port opening/closing cover are fixed to the speaker grill plate made of synthetic resin, wood, metal, etc. and having a control window opposite to the level control knob, and these are integrated into the speaker body. A speaker device characterized in that it is removably attached to.
(2)上記スピーカーグリル板は、上記制御用窓が設け
られ、かつ上記ポート開閉蓋が取付けられ、そして上記
ホーン及び音響レンズが前面に露出して一体に固着され
た上部前面板部と、上記ディフューザーを構成する鎧戸
状の下部前面板部とからなっている特許請求の範囲第1
項記載のスピーカー装置。
(2) The speaker grill plate includes an upper front plate portion on which the control window is provided, the port opening/closing cover is attached, and the horn and acoustic lens are exposed on the front side and fixed integrally; Claim 1 consisting of a shutter-like lower front plate portion constituting a diffuser.
The speaker device described in section.
JP17793186A 1986-07-29 1986-07-29 Speaker equipment Pending JPS6333996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17793186A JPS6333996A (en) 1986-07-29 1986-07-29 Speaker equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17793186A JPS6333996A (en) 1986-07-29 1986-07-29 Speaker equipment

Publications (1)

Publication Number Publication Date
JPS6333996A true JPS6333996A (en) 1988-02-13

Family

ID=16039571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17793186A Pending JPS6333996A (en) 1986-07-29 1986-07-29 Speaker equipment

Country Status (1)

Country Link
JP (1) JPS6333996A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018150788A1 (en) * 2017-02-20 2018-08-23 パナソニックIpマネジメント株式会社 Acoustic lens and speaker system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575979U (en) * 1980-06-11 1982-01-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575979U (en) * 1980-06-11 1982-01-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018150788A1 (en) * 2017-02-20 2018-08-23 パナソニックIpマネジメント株式会社 Acoustic lens and speaker system

Similar Documents

Publication Publication Date Title
USRE48921E1 (en) Audio device comprising a microphone
US5113968A (en) Speaker grill assembly
GB2168220A (en) Earphone
JP2021114694A (en) Sound output device
EP0392649A2 (en) Speaker
US4196791A (en) Speaker grill including stress regions
JPS6333996A (en) Speaker equipment
US4176730A (en) Speaker cabinet
EP3461144B1 (en) Dust protection for externally ported speaker enclosure
US5692814A (en) Computer casing
JPH11502768A (en) Filter device with filter case, filter mat and thin plate grid
JPS61234195A (en) Speaker system
US4177873A (en) Loudspeaker equipment
JPS60200698A (en) Fitting device of speaker grill
JP3021726B2 (en) Air filter mounting device
JPH0635595Y2 (en) Speaker device
US4529059A (en) Vibrating diaphragm type audible device with acoustically improved grille and method
JPH0483499A (en) Speaker device
JP2523087Y2 (en) Window frame structure of outdoor electrical equipment storage box
JPS60164133A (en) Door unit of cooking device, etc.
JP2853120B2 (en) Speaker system
GB2288513A (en) Mounting loudspeaker grilles
JPH0918562A (en) Lobby interphone
JP3521437B2 (en) Exposed / embedded housing
JP2703089B2 (en) Baseboard