When adding braces to an enclosure always add the displacement of the extra wood to the gross box
volume as it is designed.
Another type of brace, called a cross brace, should be used in any span that is 12” (30cm) or more to pre-
vent panel vibration. The most common application will be from the front baffle to the rear wall and
between the top and the bottom walls. This type of brace is usually made of 3/4” x 2” wood. The brace will
contact the enclosure only on its ends where it should be glued and screwed or stapled. Place the brace
slightly off center for maximum rigidity. A perfectly centered cross brace can actually increase cabinet flex
and resonance (at a higher, more audible frequency
).
Kicker Technical Tips
Page 7
Vol. 1
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