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<blockquote data-quote="audioholic" data-source="post: 4827735" data-attributes="member: 549629">Like Hintzboy said, cone excursion is greatly controlled by the enclosure/tuning in a vented setup. To say the sub isn&#039;t reaching its mechanical limits, in a ported box, makes me think you don&#039;t realize this.Excursion also increases as the signal moves up from tuning. Alot of people will tell you excursion means nothing in ported boxes, or only factors in below tuning. Both of these statements are based on partial truth, but aren&#039;t quite accurate.When burping for an SPL, the signal does not vary from tuning much, thus excursion is minimized and mechanical limits become a minor factor (except in extreme cases). That is where the idea that excursion is meaningless in ported systems comes from. but we dont burp at tuning when we play music, its transient, and cone excursion can become a factor.As said before, a speaker basically has 2 limit thresholds... mechanical and thermal. Surpassing either one can lead to premature speaker failure. Just because your speaker, in its ported box, has more mechanical capabilities does not mean the speaker is not running to its full potential. In ported boxes, again due to decreased excursion at/near tuning, thermal limits tend to become the limiting factor, not mechanical. That&#039;s not always the case, as I stated above, but you need to at last consider thermal limits when deciding the sub has more potential to give you.</blockquote>

[QUOTE="audioholic, post: 4827735, member: 549629"] Like Hintzboy said, cone excursion is greatly controlled by the enclosure/tuning in a vented setup. To say the sub isn't reaching its mechanical limits, in a ported box, makes me think you don't realize this. Excursion also increases as the signal moves [B]up[/B] from tuning. Alot of people will tell you excursion means nothing in ported boxes, or only factors in below tuning. Both of these statements are based on partial truth, but aren't quite accurate. When burping for an SPL, the signal does not vary from tuning much, thus excursion is minimized and mechanical limits become a minor factor (except in extreme cases). That is where the idea that excursion is meaningless in ported systems comes from. but we dont burp at tuning when we play music, its transient, and cone excursion [I]can[/I] become a factor. As said before, a speaker basically has 2 limit thresholds... mechanical and thermal. Surpassing either one can lead to premature speaker failure. Just because your speaker, in its ported box, has more mechanical capabilities does not mean the speaker is not running to its full potential. In ported boxes, again due to decreased excursion at/near tuning, thermal limits tend to become the limiting factor, not mechanical. That's not always the case, as I stated above, but you need to at last consider thermal limits when deciding the sub has more potential to give you. [/QUOTE]

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