40W 4 channel audio amplifier

Posted on Feb 7, 2014

With the integrated audio TDA8571J designed for automotive applications, this circuit can expand the sound of the car radio or connect a portable MP3 playerin it. Internally, thechiphas eightoperationalamplifierseton the bridge, allowingeachspeaker terminalbeing energized. Dontconnect thenegative terminal ofthe mass ofthe speaker, becausetheywillproducea short circ

40W 4 channel audio amplifier
Click here to download the full size of the above Circuit.

uiton theoutput. This circuitprovidesa total of fourspeakers4 ohmsand40Wat12vpowered. It is thereforeidealfor usein the car. Totalharmonic distortionis rather high, about 10%at full power. Butwithhalf the powerrequirements(20W)is lessthan 2%. Anyway itis not intendedtohave ahigh performancesystemin the car. With theintegratedaudioTDA8571Jdesignedforautomotive applications, this 40w amplifier circuit can expandthe soundof the car radioorconnecta.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Video IF circuit TV Schematic Diagram
    Telephone Call Recorder
    relay found in switch mode power supply
    tx atv
    Positive voltage to negative voltage converter
    555 Christmas Lights Project
    LED Volt Meter
    An electronic music rotating lights circuit