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<blockquote data-quote="audioholic" data-source="post: 6982443" data-attributes="member: 549629"><p>If some speakers are closer to the port opening than others, excursion will vary. The speakers moving less will generate less pressure. But the ones closer will move more. How this affects the over all SPL score is difficult to say, because it depends on many factors (like how uneven the pressure varies inside the box, how many speakers are involved, etc). It would take some fairly extensive testing to determine exactly how it affects an SPL score, and that would not be a universal affect from one system to another.</p></blockquote><p></p>
[QUOTE="audioholic, post: 6982443, member: 549629"] If some speakers are closer to the port opening than others, excursion will vary. The speakers moving less will generate less pressure. But the ones closer will move more. How this affects the over all SPL score is difficult to say, because it depends on many factors (like how uneven the pressure varies inside the box, how many speakers are involved, etc). It would take some fairly extensive testing to determine exactly how it affects an SPL score, and that would not be a universal affect from one system to another. [/QUOTE]
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