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Message: <blockquote data-quote="ciaonzo" data-source="post: 6530494" data-attributes="member: 607015">Yeah, if you take a driver and put it in a sealed and vented enclosure of the same volume (just for simplicity's sake), the sealed will reach much lower in frequency but the vented will have much more output down to the tuning frequency. So while the sealed is much less efficient, it will keep playing to a lower frequency as long as the driver has the excursion and power handling to back it up. The vented is much more efficient because you're using the main resonance in the pass band but once you play a frequency below tuning you get a direct cancellation between the energy coming off the front and rear of the cone. This is the reason for the steep roll-off.It's not a hard and fast rule but sealed will almost always go lower than vented in most practical applications. There are exceptions, like everything else.</blockquote>

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