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<blockquote data-quote="audioholic" data-source="post: 2157630" data-attributes="member: 549629">Hmmmm.What an enclosure do for a speaker? It creates an air cushion behind the spekaer to work as a suspension, tuning the overall system and dampening cone motion in the process.How does this work? It work by air molecules inside the enclosure. When the cone move in, the space inside the enclosure gets smaller (by cone taking up more room), the box is &#039;sealed&#039; so the air molecules have no where to be displaced, they simply squeeze together tighter (tighter than ambient air prssure outside the enclosure). This compressing effect on the molecules now means there is a high pressure zone on the inside side of the speaker&#039;s cone, and a low pressure zone on the outside. This makes the cone naturally want to move back out and equalize pressure on both sides of its cone. Simple physics. When the cone moves out, same thing only in reverse... air molecules expand apart creating low pressure inside the box and high outside, again wanting to cetner the cone back to neutral.Now, remove the air molecules from the box. Your air spring/cushion has just been removed, enclosure &#039;tuning&#039; just went right out the window. Due to having low pressure inside the enclosure from ******* a vacuum, as was said above, the cone would simply **** in and never move back out. This would hurt performance, not help it. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifAnd I agree with above, even if it were a good idea, building an enclosure so sealed it didnt lose its vacuum... would be almost impossible. Even the wood ifself would need to be sealed.</blockquote>

[QUOTE="audioholic, post: 2157630, member: 549629"] Hmmmm. What an enclosure do for a speaker? It creates an air cushion behind the spekaer to work as a suspension, tuning the overall system and dampening cone motion in the process. How does this work? It work by air molecules inside the enclosure. When the cone move in, the space inside the enclosure gets smaller (by cone taking up more room), the box is 'sealed' so the air molecules have no where to be displaced, they simply squeeze together tighter (tighter than ambient air prssure outside the enclosure). This compressing effect on the molecules now means there is a high pressure zone on the inside side of the speaker's cone, and a low pressure zone on the outside. This makes the cone naturally want to move back out and equalize pressure on both sides of its cone. Simple physics. When the cone moves out, same thing only in reverse... air molecules expand apart creating low pressure inside the box and high outside, again wanting to cetner the cone back to neutral. Now, remove the air molecules from the box. Your air spring/cushion has just been removed, enclosure 'tuning' just went right out the window. Due to having low pressure inside the enclosure from ******* a vacuum, as was said above, the cone would simply **** in and never move back out. This would hurt performance, not help it. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] And I agree with above, even if it were a good idea, building an enclosure so sealed it didnt lose its vacuum... would be almost impossible. Even the wood ifself would need to be sealed. [/QUOTE]

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