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<blockquote data-quote="helotaxi" data-source="post: 361058" data-attributes="member: 550915">It stops vibrating when the signal telling it to vibrate quits.If you actually read his post, he describes why a vented enclosure actually restricts the cone movement MORE than a sealed enclosure.&nbsp; You have not proven anything other than you are out of your depth, you like untuned/mistuned/noisy vented boxes and you can agree with PHYSICS, but only to an extent!Here is most of the problem.&nbsp; You are simply sealing a vented box in a free-air environment and expecting it to perform correctly.&nbsp; It won&#039;t, first of all.&nbsp; The volume for a optimal sealed and vented enclosure for the same driver are rarely the same.&nbsp; Second of all, output and sound quality are not the same.&nbsp; Compare the spectrum analyzer to a realtime analyzer to get the true story as to which is more accurate.&nbsp; While you&#039;re at it run some decay plots and see what you get...A proper SQ system will reproduce sound faithful to the original recording.&nbsp; If there is a lot of bass in the recording, then the system would deliver a lot of bass, but it would not over-accentuate the bass.&nbsp; In a car environment, vented systems tend to over-emphasize the bottom end because a system designed for flat response in the free air or large room environment, do not keep their flat response in the car environment due to cabin gain as geolman mentioned.This is irrelevant.&nbsp; PA is not concerned with much else than output.&nbsp; Home audio is working in a near free air environment and does not have as much benefit from cabin gain.&nbsp; Some fidelity is sacrificed for extended low frequency response.</blockquote>

[QUOTE="helotaxi, post: 361058, member: 550915"] It stops vibrating when the signal telling it to vibrate quits. If you actually read his post, he describes why a vented enclosure actually restricts the cone movement MORE than a sealed enclosure. You have not proven anything other than you are out of your depth, you like untuned/mistuned/noisy vented boxes and you can agree with PHYSICS, but only to an extent! Here is most of the problem. You are simply sealing a vented box in a free-air environment and expecting it to perform correctly. It won't, first of all. The volume for a optimal sealed and vented enclosure for the same driver are rarely the same. Second of all, output and sound quality are not the same. Compare the spectrum analyzer to a realtime analyzer to get the true story as to which is more accurate. While you're at it run some decay plots and see what you get... A proper SQ system will reproduce sound faithful to the original recording. If there is a lot of bass in the recording, then the system would deliver a lot of bass, but it would not over-accentuate the bass. In a car environment, vented systems tend to over-emphasize the bottom end because a system designed for flat response in the free air or large room environment, do not keep their flat response in the car environment due to cabin gain as geolman mentioned. This is irrelevant. PA is not concerned with much else than output. Home audio is working in a near free air environment and does not have as much benefit from cabin gain. Some fidelity is sacrificed for extended low frequency response. [/QUOTE]

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