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<blockquote data-quote="audioholic" data-source="post: 6297152" data-attributes="member: 549629">Well Im still confused, because your video seemed to show the port approx the same length as the diameter of your speakers. Sorry if you consider this a flame, I just really dont see how things add up here. 12&quot; speaker, 18&quot; port. The video should clearly show a discrepancy in the size of these two objects. Am I seeing the enclosure wrong or what?More port area is not always better. More port area allows the enclosure to unload faster below tuning (bad for music after some point) and increases port length to keep the same tuning (bad for SPL at some point). The port length and port area provide a resistance to air flow that, in conjunction with enclosure volume, creates port tuning.Imagine blowing through a straw. If the straw is large enough diameter, no matter how long it is, it will create no resistance to your blowing motion. It would be like blowing into mid-air, not a straw at all. At this point, the enclosure would like much like an infinite baffle situation as far as cone motion is concern, but without isolating back waves from the front waves.Hope this answers your question.</blockquote>

[QUOTE="audioholic, post: 6297152, member: 549629"] Well Im still confused, because your video seemed to show the port approx the same length as the diameter of your speakers. Sorry if you consider this a flame, I just really dont see how things add up here. 12" speaker, 18" port. The video should clearly show a discrepancy in the size of these two objects. Am I seeing the enclosure wrong or what? More port area is not always better. More port area allows the enclosure to unload faster below tuning (bad for music after some point) and increases port length to keep the same tuning (bad for SPL at some point). The port length and port area provide a resistance to air flow that, in conjunction with enclosure volume, creates port tuning. Imagine blowing through a straw. If the straw is large enough diameter, no matter how long it is, it will create no resistance to your blowing motion. It would be like blowing into mid-air, not a straw at all. At this point, the enclosure would like much like an infinite baffle situation as far as cone motion is concern, but without isolating back waves from the front waves. Hope this answers your question. [/QUOTE]

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