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Message: <blockquote data-quote="t-money" data-source="post: 2530974" data-attributes="member: 562029"><p>my friend is thinking about getting a FI Q 15 or 12, hes not sure. He told me that you can determine if a sub is more suited for sealed or ported boxes by doing a little calculation. He said if you take a subwoofers fs and divide it by the qes, if you get closer to 50 its suited for sealed and if you get closer to 100 go ported. Is that true? if so where is the boundary between 50 and 100 to know which type of box to use. When he does the calculation for the 15 Q d2 and the 12 Q d2 he gets numbers to have him believe they're both suited for sealed boxes. Does that mean they will perform best in that box in terms of spl and sq? any help is appreciated</p></blockquote><p></p>

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