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<blockquote data-quote="audioholic" data-source="post: 4827790" data-attributes="member: 549629">Think of the air in your box as an &#039;air spring&#039;. As the cone tries to push in, it compresses the air molecules slightly. This compression force also as an equally opposite force on the cone, trying to force it back to its centered position, thereby equalizing air pressure inside and outside the box.Now imagine two boxes, one being twice as big as the other. The bigger box has more air molecule to compress, yet the speaker&#039;s cone still displaces the same amount of air space (excursion x diameter), so each air molecule will be compressed less. Extrapolating that information you will realize then that the cone, in the twice as large box, could move its cone twice as far before it felt the same return force on the cone as it would in the box half the size. That is ignoring the speaker&#039;s suspension compliance of course.Cliff notes: Bigger box = less resistance to cone excursion, so its easier to &#039;bottom out&#039; sooner. Smaller box = more resistance to cone excursion, so its harder to get it to &#039;bottom out&#039;.</blockquote>

[QUOTE="audioholic, post: 4827790, member: 549629"] Think of the air in your box as an 'air spring'. As the cone tries to push in, it compresses the air molecules slightly. This compression force also as an equally opposite force on the cone, trying to force it back to its centered position, thereby equalizing air pressure inside and outside the box. Now imagine two boxes, one being twice as big as the other. The bigger box has more air molecule to compress, yet the speaker's cone still displaces the same amount of air space (excursion x diameter), so each air molecule will be compressed less. Extrapolating that information you will realize then that the cone, in the twice as large box, could move its cone twice as far before it felt the same return force on the cone as it would in the box half the size. That is ignoring the speaker's suspension compliance of course. Cliff notes: Bigger box = less resistance to cone excursion, so its easier to 'bottom out' sooner. Smaller box = more resistance to cone excursion, so its harder to get it to 'bottom out'. [/QUOTE]

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