JPH0438145U

JPH0438145U -

Info

Publication number: JPH0438145U
Application number: JP7933590U
Authority: JP
Priority date: 1990-07-27
Filing date: 1990-07-27
Publication date: 1992-03-31

Description

[Brief explanation of the drawing]

第１図はこの考案に係るカーオーデイオの自動
切換えスイツチの実施例を示すカーオーデイオシ
ステムの接続図である。第２図及び第３図は従来
例のシステムの接続図である。主な符号の説明、１……ヘツドユニツト、２…
…トーンコントロールアンプ、３……トーンコン
トロールアンプ切換えスイツチ、４……第１のコ
ントロール部、５……コントロール部接続線、６
……グラフイツクイコライザユニツト、７……第
２のコントロール部、８……スイツチ、９……Ｄ
ＩＮケーブル。 FIG. 1 is a connection diagram of a car audio system showing an embodiment of the automatic changeover switch for car audio according to this invention. 2 and 3 are connection diagrams of a conventional system. Explanation of main symbols, 1...Head unit, 2...
...Tone control amplifier, 3...Tone control amplifier changeover switch, 4...First control section, 5...Control section connection line, 6
...Graphic equalizer unit, 7...Second control section, 8...Switch, 9...D
IN cable.

Claims

[Scope of Claim for Utility Model Registration] In a car audio system consisting of a head unit consisting of a broadcast receiving tuner section and a cassette deck section, and a power amplifier section, a graphic equalizer is added between the head unit and the power amplifier section. When doing so, a circuit that passes the tone control amplifier inside the head unit, a switch that switches between connecting and passing the tone control amplifier, a first control section that controls this switch, and a graphic equalizer built into the graphic equalizer are used. A second control section that controls a PASS/ON changeover switch that switches the connection and path of the equalizer circuit and a circuit that connects the first control section are provided, and when the graphic equalizer is connected to the system, the head unit is automatically activated. An automatic changeover switch for a car audio system, characterized in that the switch is configured to control the connection of a tone control amplifier within the car audio system.