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Message: <blockquote data-quote="Jeffdachef" data-source="post: 8558789" data-attributes="member: 650438">That only works for slot.  Aeros are completely different you do not go by that unless you want to destroy and tear up your sub mechanically.Try to squeeze a bit more out of that octo and use .5 inch wood instead of .75 and you should be good.octos aren't as efficient as round ports so you might need slightly higher than 9. 10 to 11 port per foot would be good</blockquote>

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