JPS5978793U - speaker device - Google Patents
speaker deviceInfo
- Publication number
- JPS5978793U JPS5978793U JP17460582U JP17460582U JPS5978793U JP S5978793 U JPS5978793 U JP S5978793U JP 17460582 U JP17460582 U JP 17460582U JP 17460582 U JP17460582 U JP 17460582U JP S5978793 U JPS5978793 U JP S5978793U
- Authority
- JP
- Japan
- Prior art keywords
- power amplifier
- bias circuit
- btl
- speaker device
- speaker
- 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
Landscapes
- Amplifiers (AREA)
- Stereophonic Arrangements (AREA)
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図及び第２図は従来例を示す図、第３図は本考案の
一実施例を示す図である。
１１・・・第１電力増幅器、１２・・・バイアス回路、
１７．１８・・・切換えスイッチ、１９・・・第２電力
増幅器、２０・・・スピーカ。1 and 2 are diagrams showing a conventional example, and FIG. 3 is a diagram showing an embodiment of the present invention. 11... First power amplifier, 12... Bias circuit,
17.18... Changeover switch, 19... Second power amplifier, 20... Speaker.
Claims (1)
るスピーカ装置であって、ＢＴＬ （Ｂｅｌａｎｃｅｄ
、 Ｔｒａｎｓｆｏｒｍｅｒ Ｌｅｓｓ）接続の電力
増幅器が前記第１の電力増幅器として用いられた際、前
記ＢＴＬ接続の電力増幅器のアース端子と接続される第
１の端子と、前記第１の電力増幅器の出力信号をバイア
スするバイアス回路と、接続される前記第１の電力増幅
器に応じて前記バイアス回路を切換える切換えスイッチ
と、前記バイアス回路にてバイアスされた信号が印加さ
れる第２の電力増幅器と、該第２の電力増幅器にて駆動
されるスピーカとを備え、前記第１の電力増幅器として
前記ＢＴＬ接続の電力増幅器を用いた際には前記第１の
端子を前記ＢＴＬ接続の電力増幅器のアース端子に接続
すると共に前記切換えスイッチを切換えることにより前
記バイアス回路を切換え、前記第１の電力増幅器の出力
信号を前記バイアス回路にて通常の略２倍にバイアスし
て前記第２の電力増幅器に印加し、以って前記第２の電
力増幅器の出力信号にて前記スピーカを駆動するように
したことを特徴とするスピーカ装置。A speaker device to which left and right channel signals are applied from a first power amplifier, the speaker device being a BTL (Belanced
, Transformer Less) connection is used as the first power amplifier, a first terminal connected to the ground terminal of the BTL connection power amplifier and an output signal of the first power amplifier a bias circuit for biasing, a changeover switch for switching the bias circuit according to the first power amplifier connected thereto, a second power amplifier to which a signal biased by the bias circuit is applied; a speaker driven by a power amplifier, and when the BTL-connected power amplifier is used as the first power amplifier, the first terminal is connected to the ground terminal of the BTL-connected power amplifier. At the same time, the bias circuit is switched by switching the changeover switch, and the output signal of the first power amplifier is biased at approximately twice the normal level in the bias circuit, and then applied to the second power amplifier. The speaker device is characterized in that the speaker is driven by the output signal of the second power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17460582U JPS5978793U (en) | 1982-11-17 | 1982-11-17 | speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17460582U JPS5978793U (en) | 1982-11-17 | 1982-11-17 | speaker device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5978793U true JPS5978793U (en) | 1984-05-28 |
| JPS6325823Y2 JPS6325823Y2 (en) | 1988-07-13 |
Family
ID=30380078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17460582U Granted JPS5978793U (en) | 1982-11-17 | 1982-11-17 | speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5978793U (en) |
-
1982
- 1982-11-17 JP JP17460582U patent/JPS5978793U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6325823Y2 (en) | 1988-07-13 |
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