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Message: <blockquote data-quote="noob with an RS" data-source="post: 1739427" data-attributes="member: 558925">the differences between the amps x-over and the head unit's x-over could be the crossover slope. the slopes are usually 12 db, 18db, or 24 db (12 and 24 being the more common ones). basically what this means is:in a 24db slope with the crossover at 50 hz, 100 hz (which is one octave up from 50hz), would be 24 db less than 50 hz.in a 12db slope with the crossover at 50 hz, 100 hz (which is one octave up from 50hz), would be 12 db less than 50 hz.find out if your HU is 12 db or 24 db or if its adjustable. check your amps manual to see what slope it uses.</blockquote>

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