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I have a cda-9825 alpine head unit that turns off my amp to my subs only on the tuner source. i belive that i have it all wired correctly. i only have this problem with the tuner the cd and aux sources work fine. my amp isnt going into safe mode it seems to just turn off completly.

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  • jadedogy Apr 28, 2010

    no the remote on for the amp is connected to the blue with a white stripped wire and i belive if i did that then it wouldnt work at all instead of just not the tuner

  • jadedogy Apr 29, 2010

    the amp turns off when i do both.when the head unit is on a cd the amp works fine then i press the button to change it to the tuner and it turns off. when i just turn on the car and it is on the tuner the amp turns on for a split second then quickly shuts off agin but then i change the source to the cd again and it turns and stays back on.

  • jadedogy Apr 29, 2010

    i found what was causeing the problem it was indeed a very hiddin setting that for some reson would turn of my amp thank you for the advice.

  • jadedogy Apr 30, 2010

    yea i dont even think it was that setting cuz i tryed that and it turned off all signal from the deck like front and rear as well as the sub but what was hapining was only the sub amp wounds turn off and the speakers would still play idk what was wrong for sure.

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Is the radio shutting down?
Remove the antenna connector and re-try.

Thanks!

Posted on Apr 28, 2010

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  • blueextc3221
    blueextc3221 Apr 29, 2010

    no - not the remote turn on wire - im talking behind the radio - the antenna plug.



    Thanks!!

  • blueextc3221
    blueextc3221 Apr 29, 2010

    remove the faceplate and press the reset button too.

  • blueextc3221
    blueextc3221 Apr 29, 2010

    as there may be a setting that got turned off or on by accident.



    CLICK HERE for a copy of the user and install manual if you dont have it.



    ALSO - be sure the pink/black MUTE wire is terminated - and not touching bare wire behind the radio.



    Thanks

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You didn't mistakenly connect the Amp remote line to the head units power antenna line (Blue) did you? You should be connected to the Blue/White wire for the amp remote line... Just a thought.

Posted on Apr 28, 2010

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  • Adam Halfhill
    Adam Halfhill Apr 28, 2010

    I had a friend who used the power ant line... it is -12v switched. Worked for a while, then knocked his amp out. You need to prob that amp remote line (use a prob light or a volt meter)... to see if it is turning off when you switch to the tuner. I suspect it is. Also, does this happen when you have the head unit on and switch to Tuner or does this happen when you turn the head unit on and you are already on the Tuner source?. If you are out of warranty and just need a solution, you can use the Power Ant line through a relay to create a secondary Remote Amp line. If this is something you want to do, I will put together a diagram for you, let me know.

  • Adam Halfhill
    Adam Halfhill Apr 29, 2010

    Well, I hope you find a solution that makes your head unit work correctly... If you don't... This should be a working solution to get around the problem. I hate Radio Shack's part selection, but this should be an easy part to work with:






    Power Antenna is a switched ground, turns relay on, sends new 12+ line to amp. I've seen the Radio Shack guys solder for the customer... you may be able to get them to attach the wires for you... you'll then just need to splice them in to the wire harness.

  • Adam Halfhill
    Adam Halfhill Apr 29, 2010

    Cool, glad it worked out for you. I did see in the manual that you could shut off the internal amp to improve clarity when you are using external amps... never would have thought they broke things down THAT far. Best wishes.

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