JPS61199995U - - Google Patents
Info
- Publication number
- JPS61199995U JPS61199995U JP8509585U JP8509585U JPS61199995U JP S61199995 U JPS61199995 U JP S61199995U JP 8509585 U JP8509585 U JP 8509585U JP 8509585 U JP8509585 U JP 8509585U JP S61199995 U JPS61199995 U JP S61199995U
- Authority
- JP
- Japan
- Prior art keywords
- power amplifier
- output
- amplifies
- low
- amplifier
- 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
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Description
第１図はこの考案を説明する回路ブロツク図、
第２図はこの考案の実施例の回路ブロツク図、第
３図は低周波帯域増幅器１０の特性図、第４図は
従来例を説明するブロツク図、である。
１０……低周波帯域増幅器、２０……電力増幅
装置、２１……第１電力増幅器、２２……第２電
力増幅器、２３……加算器、３０……スピーカシ
ステム、３１……中高音用スピーカ、３２……低
音用スピーカ、Ａ１，Ａ２，Ａ３……それぞれ演
算増幅器、Ｃ１，Ｃ２，Ｃ３……それぞれコンデ
ンサ、Ｌ１……半導体インダクタンス、Ｒ１，Ｒ
２，Ｒ３…，Ｒ８……それぞれ抵抗器、ＶＲ１…
…可変抵抗器。
Figure 1 is a circuit block diagram explaining this idea.
FIG. 2 is a circuit block diagram of an embodiment of this invention, FIG. 3 is a characteristic diagram of the low frequency band amplifier 10, and FIG. 4 is a block diagram illustrating a conventional example. 10...Low frequency band amplifier, 20...Power amplifier, 21...First power amplifier, 22...Second power amplifier, 23...Adder, 30...Speaker system, 31...Speaker for medium and high frequencies , 32...bass speaker, A1 , A2 , A3 ...each operational amplifier, C1 , C2 , C3 ...each capacitor, L1 ...semiconductor inductance, R1 , R
2 , R3 ..., R8 ...respectively resistors, VR1 ...
...variable resistor.
Claims (1)
低周波帯域増幅器と、該低周波帯域増幅器の出力
を電力増幅する第１電力増幅器と、前記低周波帯
域増幅器の出力の或る定数α（但し、Ｏ〈α〈１
）倍した信号と前記オーデイオ入力信号の１―α
倍した信号とを加算する加算器と、該加算器の出
力を前記第１電力増幅器と逆相に電力増幅する第
２電力増幅器と、前記第２電力増幅器の出力のホ
ツト側端子とアース側端子間に接続の中高音用ス
ピーカと、前記第１電力増幅器の出力ホツト側端
子と前記第２電力増幅器の出力のホツト側端子間
に接続の低音用スピーカとを備えたことを特徴と
する拡声装置。 ２ 加算器の出力が反転出力し、第２電力増幅器
が第１電力増幅器と同相に電力増幅することを特
徴とする実用新案登録請求の範囲第１項記載の拡
声装置。[Claims for Utility Model Registration] 1. A low-frequency band amplifier that amplifies the low-frequency components of an audio input signal, a first power amplifier that amplifies the output of the low-frequency band amplifier, and a first power amplifier that amplifies the output of the low-frequency band amplifier; A certain constant α (however, O〈α〈1
) multiplied signal and 1-α of the audio input signal
an adder that adds the multiplied signal; a second power amplifier that amplifies the output of the adder in a phase opposite to that of the first power amplifier; and a hot side terminal and a ground side terminal of the output of the second power amplifier. A loudspeaker comprising: a medium-high frequency speaker connected between the first power amplifier and the second power amplifier; and a low-frequency speaker connected between the output hot side terminal of the first power amplifier and the output hot side terminal of the second power amplifier. . 2. The public address system according to claim 1, wherein the output of the adder is inverted and the second power amplifier amplifies the power in phase with the first power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8509585U JPH062396Y2 (en) | 1985-06-04 | 1985-06-04 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8509585U JPH062396Y2 (en) | 1985-06-04 | 1985-06-04 | Loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61199995U true JPS61199995U (en) | 1986-12-15 |
| JPH062396Y2 JPH062396Y2 (en) | 1994-01-19 |
Family
ID=30635174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8509585U Expired - Lifetime JPH062396Y2 (en) | 1985-06-04 | 1985-06-04 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062396Y2 (en) |
-
1985
- 1985-06-04 JP JP8509585U patent/JPH062396Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH062396Y2 (en) | 1994-01-19 |
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