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Message: <blockquote data-quote="nVRuckus" data-source="post: 2796301" data-attributes="member: 561806"><p>I have a friend with 4 12" 05 L7s he will be running of 2 KX2500.1 well its a suv setup total space before displacement is 6.77 cubes subs top and port back. How big should the port are be? He wants to compete SPL and still uses it daily so tuning will be about 38hz since he peaks around 45hz in his suv so I figure 7hz below should hit the sweet spot. Im just not sure how big a port I should use since the box will be smaller than I would normally do with so many subs. He wont go down to 2 so thats not even an option, Im just looking to make it as efficient as possible.</p></blockquote><p></p>

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