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Message: <blockquote data-quote="ckunke002" data-source="post: 7642598" data-attributes="member: 637083"><p>My old headunit didn't have any low or hi pass filter options and I just upgraded to one that does. I use the 3 rca preouts to power 1 4 channel amp (my speaker amp) and 1 sub amp. Both amps have their own hi and low pass filters which I use, but is there any benefit from using the ones on the head unit instead? And if I was to use the head unit filters, what would I set the filters at on the amps since they can't be turned off?</p></blockquote><p></p>

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