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Message: <blockquote data-quote="12Voltz" data-source="post: 3662198" data-attributes="member: 583752"><p>You need to set your gains to the input voltage of your head units RCA outputs.  If you have a 5v preout, then you can just set your gain to 5v.  If you want to be more accurate, Set your DMM to read 12vdc then check the output voltage of your RCA's by placing the positive lead on the center conductor of the RCA, and the negative lead on the outside conductor of the RCA.  This will only work if you have a scale on your gain that shows you the voltage setting.</p></blockquote><p></p>

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