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Message: <blockquote data-quote="Jeffdachef" data-source="post: 8459811" data-attributes="member: 650438">you need to calculate volume of the box. Always make it bigger than needed because you need to subtract how much space the sub motor, basket and cone takes up along with how much space the port takes up.  So if its a single 12, you'll want around 2.75 to 3 cubic feet of airspace before sub and port displacement and you'll end up around 2-2.25 cubic feet of Net usuable airspace for the sub going with a pvc or aeroport.These ports will be very long too so either it'll stick out externally or you need to make the enclosure very long in depth, you'll want the subs and port firing to the rear hatch either straight or at an angle slightly upwards either is fine.Slot ports will require much more starting (gross) cubic feet in wooden enclosures.</blockquote>

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