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Question on How to Measure Port length-2 diff. designs
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<blockquote data-quote="PowerNaudio" data-source="post: 2726150" data-attributes="member: 561215"><p>because the air in the port ,is not part of the internal volume of the enclosure and seen as a mass by the sub, at all times by the sub.</p><p></p><p>the sub has two strokes a negative stroke and the positive. port end correction is only good for the negative stroke when air is being pulled in. when the sub its in its positive stroke the air is being pushed out. so end correction would have to be looked at from the out side of the enclosure, if there was a wall at that end. inside the enclosure that end correction is none existant on the positive stroke and thats why the end correction is not accounted for as port displacement. because its only good for one half of the subwoofers full stroke and not there for the other half. so it will make zero sence to account for it as a port displacement.</p></blockquote><p></p>
[QUOTE="PowerNaudio, post: 2726150, member: 561215"] because the air in the port ,is not part of the internal volume of the enclosure and seen as a mass by the sub, at all times by the sub. the sub has two strokes a negative stroke and the positive. port end correction is only good for the negative stroke when air is being pulled in. when the sub its in its positive stroke the air is being pushed out. so end correction would have to be looked at from the out side of the enclosure, if there was a wall at that end. inside the enclosure that end correction is none existant on the positive stroke and thats why the end correction is not accounted for as port displacement. because its only good for one half of the subwoofers full stroke and not there for the other half. so it will make zero sence to account for it as a port displacement. [/QUOTE]
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Question on How to Measure Port length-2 diff. designs
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