Question about Legacy Audio LA470 Car Audio Amplifier

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Legacy LA470 red series2

One day the bass just quit and the protect lite came on and wont go off.The fuse is good, no burnt smell,just no sound...

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  • Jimmy Driver Feb 27, 2007

    One day the sound just quit and the protect lite came on and wont go off.The fuse is good, no burnt smell,I took the top off and everything looks new,no burnt spots anywhere, just no sound. Please try and help thank you

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This can be caused by a blown subwoofer.

Posted on Mar 07, 2007

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I would suspect if the amp is known to be good, that someplace you have a shorted speaker wire... possibly someplace the insulation is cut through or maybe you have a bad connection with frayed strands shorting out the speaker. Use an ohmmeter to check the resistance between each set of speaker leads and then to ground.

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Do you have an ohmmeter to check to see if the sub's voice coils are still intact? Can you try driving the subs with another source to verify they are ok? We need to eliminate the variables here.

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