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Message: <blockquote data-quote="raptor727" data-source="post: 8131568" data-attributes="member: 641393"><p>hey guys I recently got two obsidian 15's and will start building a box with two seperate chambers tomorrow.... Reason for seperate chambers is I have two american bass ph4000's one for each dual 2 sub and they are not strappable.... Going to be about 3.25 cu ft per sub after displacements but how much port are per sub should I use the typical 14" of port per cube sound good with these?? Thanks for any help</p></blockquote><p></p>

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