Question about Sony XM-502Z Car Audio Amplifier

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My amplifier and speaker works fine on Battery. After I start the car engine the amp runs for 5 seconds then shuts down and the power protect comes on. Turn off the engine and run the amp on battery again and all is fine until I switch the engine on.

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  • craigp849 Jul 26, 2009

    I have checked the voltage produced by the battery and the alternator and they are both around 13.4V

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Hi ....
There seem to be a return voltage issue. Don't run the amp until you get it checked as that can create more problems. When a vehicle is running the alternator provides power to the whole system.
When a vehicle is not running the battery provides power to the whole system.
You have to get it checked for return voltage and low voltage produced by the alternator.

Let me know
Thanks and rate
Smith

Posted on Jul 26, 2009

  • Shereena M Smillan
    Shereena M Smillan Jul 26, 2009

    Amplifier going into protect mode is caused by too low of an impedance.
    You have to get the alternators and the wiring checked.



    Thanks

    Smith

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