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<blockquote data-quote="eharri3" data-source="post: 5310563" data-attributes="member: 591579">Without having good off the top of the head knowledge of that equipment, my only opinion would be that the amps will give you a finer, more detailed control over some of that stuff, such as crossover settings and boost (if you use it) than the head unit will. And if you use boost it will give you better control over the&nbsp; exact amount of boost and which speakers get&nbsp; the boosted frequencies and which do not. If your amps are set&nbsp; right from the beginning than you probably won&#039;t need to mess with the head unit as much to get what you want.So if you&#039;re going for the most precise tune possible to fit your needs start with the amp. If you just prefer to tune amps text book style, 80 HZ high pass/low pass, zero boost, and whatever the other common recommendations are, then do that and use the EQ to fine tune.Personally, my boosts are zeroed out at the HU and Amp. I use the amp&#039;s crossover settings and turned them off at the HU, as I feel I get the up front mid-bass kick Im looking for without sacrificing undistorted volume at 70HZ. If I go to 80 I start to loose my sense of the drum attack coming from up front. If I go to 65&nbsp; HZ or below my mids give in a little too early when I play anything with a real strong bass line. My Alpine CDA 9883 doesn&#039;t give me this flexibility.&nbsp; You have better filter adjustments at your head unit than mine though so you may find it more convenient to tweak those at the head unit. It really all depends on how good your head unit&#039;s adjustments are vs. your amps and exactly how precise of a starting point you&#039;re lookin for before you equalize.</blockquote>

[QUOTE="eharri3, post: 5310563, member: 591579"] Without having good off the top of the head knowledge of that equipment, my only opinion would be that the amps will give you a finer, more detailed control over some of that stuff, such as crossover settings and boost (if you use it) than the head unit will. And if you use boost it will give you better control over the exact amount of boost and which speakers get the boosted frequencies and which do not. If your amps are set right from the beginning than you probably won't need to mess with the head unit as much to get what you want. So if you're going for the most precise tune possible to fit your needs start with the amp. If you just prefer to tune amps text book style, 80 HZ high pass/low pass, zero boost, and whatever the other common recommendations are, then do that and use the EQ to fine tune. Personally, my boosts are zeroed out at the HU and Amp. I use the amp's crossover settings and turned them off at the HU, as I feel I get the up front mid-bass kick Im looking for without sacrificing undistorted volume at 70HZ. If I go to 80 I start to loose my sense of the drum attack coming from up front. If I go to 65 HZ or below my mids give in a little too early when I play anything with a real strong bass line. My Alpine CDA 9883 doesn't give me this flexibility. You have better filter adjustments at your head unit than mine though so you may find it more convenient to tweak those at the head unit. It really all depends on how good your head unit's adjustments are vs. your amps and exactly how precise of a starting point you're lookin for before you equalize. [/QUOTE]

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