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Anonymous Posted on Mar 26, 2011

I plugged up an Legacy LA470 300x2Ch amp. It stayed in protect mode and never changed to power mode. I checked the power and ground, works fine, then remote, works fine. I then checked the output to the speakers and nothing. What do u think is wrong? I haven't checked the fuse in the amp yet, its an 15. I'm running 4 gauge wires for the power and ground. 16 gauge speaker wires. Using RCA wires to amp.

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Fred Yearian

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  • Master 5,603 Answers
  • Posted on Sep 22, 2011
Fred Yearian
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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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