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Message: <blockquote data-quote="faeezhio" data-source="post: 8136833" data-attributes="member: 653680">Hey everyone, I've got questions I need answers to...1. what difference is there between a  wide sub box(sealed) and a narrow more deeper(sealed) sub box?2.Is it a must to have a amp with a subsonic filter for a ported box? I have a cvr and the lowest Hz it can play in its range is 25hz, could I just port the box to 25/26hz? What will the peak Hz be if it should be tuned that low?</blockquote>

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