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29. Check the box for overall squareness: measure diagonally across the cabinet to see if it measures
the same in both directions.
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If not, clamp the baffle board into one acute corner as shown.
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This will pull the whole box into perfect square. Now tighten all eight cabinet screws on the sides.
If necessary, use the other clamp to hold the joints tight as you drive the screws home.
Time to decide if you want the ports to be removable or not. If you glue them in place, the box will
be considerably stronger and more durable, but if you ever want to service the speaker, you will
have to remove the baffle from the front, which weakens the rigidity of the baffle. See “REPLACING
THE SPEAKER”. It really depends on how likely you are to want to try lots of different speakers in
your cabinet. If that’s you, then do NOT glue the ports in place at this time. If you can’t imagine ever
replacing the speaker unless it has died of old age, then glue in the ports.
30. Installing the Ports (Part # CA04.4&5): The solid port goes in the rear bottom; the port with a hole
goes in the rear at the top.
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If gluing, put some glue on one long edge, and on the back of the
port where it will touch the cleats. Do NOT put any glue on the ENDS of the ports! It will only
squeeze out and make a mess. Whether using glue or not, tap the ports tightly into place.
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