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im45pl

level 6 18 in a 4th order

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Since I have to rebuild my box due to a water leak I was thinking of going for a 4th order enclosure, question is what cubic footage would be required in the sealed section?

Any info would be appreciated


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I would say it depends on how much power you have going to it. If your going to running close to full RMS power to it youll want to keep the box on tbe smaller side 5 - 5.5 cu ft with whatever ratio you decide for the ported side. If the sub will be used gently make it a bit bigger if you have room 6 - 7.5 cu ft. Just remember that anything done on the sealed side needs to be changed accordingly on the ported side (bigger sealed means bigger ported side of you are trying to hit  a specific ratio.


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