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Message: <blockquote data-quote="Trixter" data-source="post: 2862507" data-attributes="member: 542668">i would think the wave coming from the back and meeting the front would only be exactly in phase at one freq....since each freq. has a different wave length to it. if you compete and use the 1/4 wave theory, then you only play one freq. because the back of the box is measured exactly, for that freq., to make it in phase when it reaches a given point, usually mic placement, up front.another way to think of it is air comes out as the sub goes in......</blockquote>

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