JPS6064698U - Loudspeaker system for conference hall - Google Patents
Loudspeaker system for conference hallInfo
- Publication number
- JPS6064698U JPS6064698U JP15582483U JP15582483U JPS6064698U JP S6064698 U JPS6064698 U JP S6064698U JP 15582483 U JP15582483 U JP 15582483U JP 15582483 U JP15582483 U JP 15582483U JP S6064698 U JPS6064698 U JP S6064698U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- preamplifier
- test
- switch
- test switch
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の議場用拡声装置を示す系統図、第２図は
本考案による議場用拡声装置の１実施例を示す系統図で
ある。 ゛ −１・・・マイクロ、ホン選択
回路１．２用前置増幅器、３・・・電力増幅器、４・・
・スピーカ選択回路、５・・・レベル計、６・・・帯域
通過ろ波器、７・・・試験用周波数発生源、Ｍ１〜Ｍｎ
・・・マイクロホン、ＳＰ１〜ｓＰ。・・・スピーカ、
Ｓ１〜Ｓ−−Ｗｕ〜Ｗｎ・・・スイッチ接点、（１、（
：２ ＊＊＊切換接点、ｆｌ、ｆ２−・・固定接点、ｂ
ｌ、ｂ２−・・ブレーク接点、ｍｌ、ｍ２”” 。
メーク接点。 。FIG. 1 is a system diagram showing a conventional loudspeaker system for conference halls, and FIG. 2 is a system diagram showing one embodiment of the loudspeaker system for conference halls according to the present invention.゛ -1...Micro, phone selection circuit 1.2 preamplifier, 3...Power amplifier, 4...
・Speaker selection circuit, 5...Level meter, 6...Band pass filter, 7...Test frequency generation source, M1 to Mn
...Microphone, SP1-sP. ...speaker,
S1~S--Wu~Wn...Switch contact, (1, (
:2 ***Switching contact, fl, f2-...Fixed contact, b
l, b2--Break contact, ml, m2"". Make contact. .
Claims (1)
回路の各スイッチ接点の末々を介して１個の前置増幅器
及びこの前置増幅器の出力を入力とする１個の電力増幅
器を通じてスピーカ選択回路の各スイッチ接点を介して
複数個のスピーカの夫々より増幅拡声されるようになさ
れ、かつ上記前置増幅器の出力側に分岐接続されたレベ
ル計で−計測されるようになされた議場用拡声装置にお
い上記前置増幅器と上記レベル計とは試験用スイー゛ン
チの第１の切換接点のブレーク接点及び固定接点とを介
して接続され、上記前置増幅器と上記電力増幅器とは上
記試験用スイッチの第２の切換接−点のブレーク接点及
び固定接点とを介して接続され、上記マイクロホン及び
スピーカの試験時には、上記試験用スイッチの作動によ
り、上記前置増幅器と上記レベル計と１よ一端が上記前
置増幅器−の出力側に他端が上記試験用スイッチの第１
の切換接点のメーク接点に夫々接続された試験周波数−
のみ通過させる帯域通過ろ波器を介装した態様をもって
上記試験用スイッチの第１の切換接点のメータ接点及び
固定接点を介して接続され、上記電力増幅器は上記前置
増幅器と切離されて一端が接地され他端が上記試験用ス
イッチの第２の切換接 。 点のメーク接点に夫々接続された上記試験周波数を発生
する試験周波数発生源に上記試験用スイッチの第企の切
換接点の固定接点及びメーク接点を介−て接続されたこ
とを特徴とする議−用拡声装置。[Claims for Utility Model Registration] The output signals of several W microphones are transmitted through the end of each switch contact of the microphone selection circuit to one preamplifier and one preamplifier to which the output of this preamplifier is input. The sound is amplified and amplified from each of the plurality of speakers through each switch contact of the speaker selection circuit through a power amplifier, and is measured by a level meter branch-connected to the output side of the preamplifier. In the public address system for a conference hall, the preamplifier and the level meter are connected through a break contact and a fixed contact of the first switching contact of the test sweep, and the preamplifier and the power amplifier is connected through the break contact and the fixed contact of the second switching contact of the test switch, and when testing the microphone and speaker, the preamplifier and the level meter are connected by actuation of the test switch. and 1, one end is connected to the output side of the above preamplifier and the other end is connected to the first side of the above test switch.
The test frequency connected to each make contact of the switching contact of -
The power amplifier is separated from the preamplifier and connected through the meter contact and the fixed contact of the first switching contact of the test switch, and the power amplifier is separated from the preamplifier and connected to one end. is grounded and the other end is the second switching connection of the test switch. A device characterized in that the test switch is connected to a test frequency generation source that generates the test frequency, which is connected to a make contact of each point, through a fixed contact and a make contact of the switching contact of the test switch. public address system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15582483U JPS6064698U (en) | 1983-10-07 | 1983-10-07 | Loudspeaker system for conference hall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15582483U JPS6064698U (en) | 1983-10-07 | 1983-10-07 | Loudspeaker system for conference hall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6064698U true JPS6064698U (en) | 1985-05-08 |
| JPH0113520Y2 JPH0113520Y2 (en) | 1989-04-20 |
Family
ID=30344026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15582483U Granted JPS6064698U (en) | 1983-10-07 | 1983-10-07 | Loudspeaker system for conference hall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6064698U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51111328A (en) * | 1975-03-26 | 1976-10-01 | Jujo Giken Kk | Speaker-test device |
| JPS58129800U (en) * | 1982-02-26 | 1983-09-02 | 株式会社東芝 | Speaker inspection device |
-
1983
- 1983-10-07 JP JP15582483U patent/JPS6064698U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51111328A (en) * | 1975-03-26 | 1976-10-01 | Jujo Giken Kk | Speaker-test device |
| JPS58129800U (en) * | 1982-02-26 | 1983-09-02 | 株式会社東芝 | Speaker inspection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0113520Y2 (en) | 1989-04-20 |
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