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    PhishingJacket's Avatar
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    Subwoofer Control not working?

    I have an alpine head unit CDA-9847, I had it installed by tweeter, however, several things are a bit off. The sub only kicks on if you turn your volume up high enough, then you can slowly back it down. Also the subwoofer control seems to have no effect on the actualy level of subwoofer output, any ideas? I have a JL 250/1 mono amp if it makes a difference







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    Re: Subwoofer Control not working?

    RCA's plugged into wrong preamp output?





    I'm lazy...

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    bri487's Avatar
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    Re: Subwoofer Control not working?

    is your amp utilizing the signal sensing turn on or the conventional remote wire?




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    Chevyaudio's Avatar
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    Re: Subwoofer Control not working?

    check the preamp output you probably used the wrong one




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