JPH01129913U - - Google Patents
Info
- Publication number
- JPH01129913U JPH01129913U JP2637388U JP2637388U JPH01129913U JP H01129913 U JPH01129913 U JP H01129913U JP 2637388 U JP2637388 U JP 2637388U JP 2637388 U JP2637388 U JP 2637388U JP H01129913 U JPH01129913 U JP H01129913U
- Authority
- JP
- Japan
- Prior art keywords
- headphone
- filter
- output
- amplifier
- amplifies
- 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
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図はこの考案の一実施例を示す回路構成図
、第２図は従来の回路構成図である。
Ａ１……アンプ、ＨＪ……ヘツドホンジヤツク
、ＭＴＧ……ミユーテイング回路、ＬＰＦ……ロ
ーパスフイルタ、Ａ２……アンプ、ＳＰ２……ス
ピーカ。
FIG. 1 is a circuit configuration diagram showing an embodiment of this invention, and FIG. 2 is a conventional circuit configuration diagram. A1 ...Amplifier, HJ...Headphone jack, MTG...Muting circuit, LPF...Low pass filter, A2 ...Amplifier, SP2 ...Speaker.
Claims (1)
子に入力した信号を増幅する第１のアンプと、こ
の第１のアンプの出力をヘツドホン駆動時はヘツ
ドホンから再生し、ヘツドホン非駆動時はスピー
カから再生に切換えるヘツドホンジヤツクと、こ
のヘツドホンジヤツクにヘツドホンが装着された
かどうかを判定する手段と、この手段がヘツドホ
ン未装着を判定すると、前記入力端子に入力され
た信号の重低音部分を取出すローパスフイルタと
、このフイルタの出力を増幅する第２のフイルタ
と、この第２のフイルタの出力を再生する再生手
段とからなる重低音再生回路。 An input terminal that inputs a signal to be amplified, a first amplifier that amplifies the signal input to this terminal, and the output of this first amplifier is reproduced from the headphone when the headphone is being driven, and from the speaker when the headphone is not being driven. A headphone jack that switches to playback, a means for determining whether or not headphones are attached to the headphone jack, and a low-pass device that extracts the heavy bass portion of the signal input to the input terminal when the means determines that the headphone is not attached. A deep bass reproduction circuit comprising a filter, a second filter that amplifies the output of this filter, and reproduction means that reproduces the output of this second filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637388U JPH01129913U (en) | 1988-02-29 | 1988-02-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2637388U JPH01129913U (en) | 1988-02-29 | 1988-02-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01129913U true JPH01129913U (en) | 1989-09-05 |
Family
ID=31247937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2637388U Pending JPH01129913U (en) | 1988-02-29 | 1988-02-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01129913U (en) |
-
1988
- 1988-02-29 JP JP2637388U patent/JPH01129913U/ja active Pending
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