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<blockquote data-quote="audioholic" data-source="post: 4629180" data-attributes="member: 549629">Xmax is linear cone excursion limit. In sealed boxes, pretty much yes its directly proportional to output potential. Assuming the enclosure its placed in allows it to reach full xmax.In ported boxes its much more complex, cone excursion is greatly limited by the enclosure itself. The closure the music note is to tuning, the more restriction the enclosure offers on cone motion, the less cone motion you have.Some people wonder why vented systems display the least cone motion at or near tuning, but also show the most output at these freqs. This is because even though cone motion is minimalized, giving less direct radiated sound, the enclosure is at its most efficient, so the port is exhibiting more output. The increase in port efficiency is greater than the loss in direct radiated sound from the cone motion decreasing, giving you an over all greatest output level. This is all ignoring outside influences like cabin gain.</blockquote>

[QUOTE="audioholic, post: 4629180, member: 549629"] Xmax is [I]linear[/I] cone excursion limit. In sealed boxes, pretty much yes its directly proportional to output potential. Assuming the enclosure its placed in allows it to reach full xmax. In ported boxes its much more complex, cone excursion is greatly limited by the enclosure itself. The closure the music note is to tuning, the more restriction the enclosure offers on cone motion, the less cone motion you have. Some people wonder why vented systems display the least cone motion at or near tuning, but also show the most output at these freqs. This is because even though cone motion is minimalized, giving less direct radiated sound, the enclosure is at its most efficient, so the port is exhibiting more output. The increase in port efficiency is greater than the loss in direct radiated sound from the cone motion decreasing, giving you an over all greatest output level. This is all ignoring outside influences like cabin gain. [/QUOTE]

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