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Message: <blockquote data-quote="Buck" data-source="post: 8870313" data-attributes="member: 591582">If you wanna test tunings you can do a front and rear port area the exact same or very close for both front and rear chambers, and see how the tuning works, front adding to rear.  Here's a box I did like a series 6th, except the sub just isn't in the box (front wave exits into cabin instead of "front" chamber):[MEDIA=instagram]CXFF0yIM7T8[/MEDIA]That's 2 chambers with 2 tunings in series, where the "front" port adds to the rear port length basically and the "front" chamber is just a chamber to add boost at higher frequencies, something like 28/56 tuning.  This box was built and used by the owner, and it performed well.  Can't tell you much outside of that.  3500w sub lol iirc.</blockquote>

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