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<blockquote data-quote="Beat_Dominator" data-source="post: 912155" data-attributes="member: 560107">I personally would say 35 is your best bet. The reality is that a tune change from 5hz or so isn&#039;t noticeable at all to a human ear. The only thing that notices these small tune changes is a mic in a SPL competition.You could tune to 40+ but that might kill the low end. You could tune below 30 but you&#039;ll most likely run into problems with the enclosure being too large for the sub or your car. You also run the risk of killing your transition to midbass frequencies which can make everything sound like crap.On top of this, the reality is your box will NOT tune to what ever you build it for. There is going to be some error in the build and the final volumes wont exactly equal what you were aiming for. For instance my box is about .01cu.ft. off from where I was trying to build, but that&#039;s hardly going to ruin performance.In a ported box the port length/cross-sectional area combined with the volume of the box determine the tune. There are calculators and stuff on the net to figure this out.</blockquote>

[QUOTE="Beat_Dominator, post: 912155, member: 560107"] I personally would say 35 is your best bet. The reality is that a tune change from 5hz or so isn't noticeable at all to a human ear. The only thing that notices these small tune changes is a mic in a SPL competition. You could tune to 40+ but that might kill the low end. You could tune below 30 but you'll most likely run into problems with the enclosure being too large for the sub or your car. You also run the risk of killing your transition to midbass frequencies which can make everything sound like crap. On top of this, the reality is your box will NOT tune to what ever you build it for. There is going to be some error in the build and the final volumes wont exactly equal what you were aiming for. For instance my box is about .01cu.ft. off from where I was trying to build, but that's hardly going to ruin performance. In a ported box the port length/cross-sectional area combined with the volume of the box determine the tune. There are calculators and stuff on the net to figure this out. [/QUOTE]

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