Question about Cerwin Vega LW12 Subwoofer

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Sub woofer cuts on and off.

Theres a continous hum on the transformer even if woofer is not being used, and now it cuts on and off if i play with the audio out jacks it some times comes back on . I was wondering can the amp be replaced and if so where do i find contact info. thanks Israel

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  • Anonymous Oct 23, 2008

    I have similar prob. Just loud hum when turned on, happened shortly after lightning hit and smoked receiver through surge protector. Trying to decide to fix or replace?

  • scotty67 Jan 25, 2009

    i have the same problem when the sub is on it makes a humming noise

  • nocoverage Jan 29, 2009

    My LW 12 just started this same problem with the hum. Anyone know the solution?

  • underwoodd Mar 18, 2009

    I have a cerwin vega avs-sub8. I don't have the hum that everybody else is talking about. Mine shuts on and off . If I turn it up it goes into protection I think. If I turn it down it shuts off and stays off. I took it in and supposedly got it fixed but the problem is still there

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I was rid on my hum just as soon as I took my plug out of my powerstrip and plugged directy into an outlet. Must be something to do with incomplete grounding. It has been working just fine every since I plugged it into the wall.

Posted on Feb 19, 2009

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I am an Electronics Tech and just finished repairing a LW12 for a customer. It also has the HUM. IF I place a finger on the RCA input and another finger on the heatsink..(black metal plate at the back) then the hum goes away. I did notice that Cerwin V maunfactured this older LW12 unit with a 2 prong cord. I personally own a newer CV 10" sub, 3-prong and has never had a problem with it and it has awesome Bass. So for my customer...I am thinking I will add a 3-prong cord. and see what happens.....

Posted on Feb 19, 2009

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