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Message: <blockquote data-quote="amartin_72" data-source="post: 1320003" data-attributes="member: 564679"><p>As long as the NET volume of your box, after you subtract the volume of the ports and the subwoofer displacement (about.1 cubic feet per sub if you cant find the spec.) is 2.0 cubic ft. then the 4 x12.something port will be fine and the box will be tuned to infinitys specifications, but you might want to try to build a box with more port area than 12 sq in from that 4" diamater port. 30 square inches will be louder and the box will have lower group delay(horter time in milliseconds between the note from the face of the sub compared to the note coming off the back of the sub and out the port, basically "punchier" bass).</p></blockquote><p></p>

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