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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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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.

Posted on Sep 22, 2011

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