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Message: <blockquote data-quote="LuvnThatBass" data-source="post: 7706000" data-attributes="member: 561396">Hello all!I have a 12" hdc3 sub and the box I have does not have any internal bracing.  it was constructed by Fischer Customs (bj) using 5/8" Trupan wood (i think its the ultalite, not too sure though), and I was wondering about external bracing?  I know it is not as effecting as internal bracing, but I would like to improve the strength.  I do not see any issues or anything right now, but I would image the flex of the box is decent considering the subwoofer and the wood (strong yes, but not too thick...)  I have a 2' x 4' slab of 1/2" MDF, can I just add this strategically to the sides to help with thickness and reduce flex?  I was also thinking about fiber-glassing all the interior corners and joints, any thoughts on this either?</blockquote>

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