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    Audio Tuning - Upgrade the car audio with MP3 player ----- Audio Cable

     

    Audio Tuning - Upgrade Car Audio with MP3 Player, Audio Cable Keywords: audio transfer Author: Chen Yun Modifying the MP3 player in the car audio system, the effect is good, the circuit is shown. After the MP3's audio signal is taken out of the earphone cable, the resistor is divided attenuated, and the conversion switch for different signals (MP3 signal / Tape, radio signal), and finally enlarge the power amplifier circuit selected by the selected signal. Modification method: First remove the magnetic tape play portion of the car, find the input of the output and the input of the output and the input of the amplifier (both ends are connected, as long as you find one of the ends, you know one by one. The two-core shield line and the connector are connected. Turn on the power, when the metal objects such as tweezers, the corresponding speakers should be stronger "喀kashi" sounds, and the output and amplifiers of the existing amplification The input is connected according to the circuit of Figure 1. The switch can be used with double-knife double-throwing dial switches or button switches, and secure the appropriate position in the chamber with a small screw. It is best to use a four-core shield line. The earphone cable picked up the MP3 audio signal can be obtained from the waste headset. Test machine: Make sure that the wiring is correct, the tester can be passed. Put the newly installed switch to the tape / radio position, at which time the tape play and radio should be normal.

     

     

     

     

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