Cerwin Vega Avs-sub8 150 Watt Amplified Stereo 8" Subwoofer Sub Woofer Logo
Matt Hall
Matt Hall Posted on Dec 08, 2013
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The subwoofer starts to make a loud thumping sound

After the woofer has been on for a few minutes, it begins to make a loud thumping noise that continues until I shut it off. If I let it go, it seems to continue for a few minutes, then stops for a while, then happens again. Any ideas why it is doing this?

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Robert

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  • Posted on Dec 08, 2013
Robert
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Remove the signal source and power it on to see if the problem occurs without any input signal. The problem could be in the receiver and not the sub

  • Matt Hall
    Matt Hall Dec 08, 2013

    I unhooked the line-in, and turned the unit on. After a few minutes, the thumping sounds returned. Eventhough it didn't work, I didn't think about it being a receiver problem. What should I try next?

  • Robert Dec 09, 2013

    it appears that something is wrong with the amplifier in the sub. You'll probably have to send it out for repair.

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