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Message: <blockquote data-quote="SlugButter" data-source="post: 8838082" data-attributes="member: 678073"><p>Over excursion usually happens when playing below port tuning. The size of the air space can be a little smaller or larger and it won’t make a huge difference on how far a sub moves in comparison to each space, if the port tuning is correct. What happens often is that someone has a 1.5 cube box tuned to 35 HZ and they stick a sub with .25 displacement in it and they now have a box at 1.25 cubes tuned to 38 or 39 HZ, then they lay rebassed music with 28 HZ clipped sine waves in it.  This happens a lot when people upgrade from small power subs to larger power subs in the same box.</p></blockquote><p></p>

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