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Reload Thread: What would cause subs to play at only 1/2 power?

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    axeshredder's Avatar
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    What would cause subs to play at only 1/2 power?

    Like the title says. I have 2 jl hd 750 amps going into 2 12" jl W7s. Recently, the subs lost their UMPH. They play, but.......missing. I have an Ohio Gen alternator, and 2 gauge wiring, so the amps get power. Amps green lights are on, soooooooooooo. I'm baffled.







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    Varinabassing's Avatar
    Varinabassing is offline CarAudio.com Elite



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    Re: What would cause subs to play at only 1/2 power?

    Good place to start is check grounds .... Grounds can cause tons of funny issues



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    axeshredder's Avatar
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    Re: What would cause subs to play at only 1/2 power?

    Quote Originally Posted by Varinabassing View Post
    Good place to start is check grounds .... Grounds can cause tons of funny issues
    Thanks. gonna go to audio shop tomorrow. Need to have stuff checked with multi meter too.




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    SounDrive is offline SounDrive RCA



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    Re: What would cause subs to play at only 1/2 power?

    If I remember correctly, newer JL amps halve their power when voltage drops too low




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