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<blockquote data-quote="helotaxi" data-source="post: 2856032" data-attributes="member: 550915">The tuning freq is only the freq at which the majority of the output is coming from the movement of air in the port rather than the movement of the cone of the driver.&nbsp; You can&#039;t infer anything more than that from knowing only the tuning freq of the enclosure.&nbsp; It tells you nothing at all about how the system will sound at that freq.&nbsp; You also can&#039;t just arbitrarily pick a freq and tune to that expecting the sub to sound good.You only have to really worry about damage when playing frequencies below the tuning freq of the enclosure at higher power levels.&nbsp; The enclosure doesn&#039;t provide much of a spring for the driver below tuning and the output from the port is out of phase with the movement of the cone causing a lot of cancellation.&nbsp; The result is the cone flopping around and possibly hitting its excursion limit which will cause damage.&nbsp; The fix for this is either don&#039;t play really low freqs really oud or get a subsonic filter which will attenuate the really low freqs and keep this from being a problem.</blockquote>

[QUOTE="helotaxi, post: 2856032, member: 550915"] The tuning freq is only the freq at which the majority of the output is coming from the movement of air in the port rather than the movement of the cone of the driver. You can't infer anything more than that from knowing only the tuning freq of the enclosure. It tells you nothing at all about how the system will sound at that freq. You also can't just arbitrarily pick a freq and tune to that expecting the sub to sound good. You only have to really worry about damage when playing frequencies below the tuning freq of the enclosure at higher power levels. The enclosure doesn't provide much of a spring for the driver below tuning and the output from the port is out of phase with the movement of the cone causing a lot of cancellation. The result is the cone flopping around and possibly hitting its excursion limit which will cause damage. The fix for this is either don't play really low freqs really oud or get a subsonic filter which will attenuate the really low freqs and keep this from being a problem. [/QUOTE]

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