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<blockquote data-quote="jonathanengr1" data-source="post: 7365065" data-attributes="member: 633698">So... I don&#039;t want to use Dynamat for this purpose?&nbsp; I think that&#039;s what you&#039;re implying.If I choose to use mdf, will it block the sub&#039;s output if I put it in front of the subs?&nbsp; Or will the sound travel through it?&nbsp; If mdf has the tendency to block the output, should I use 3/4&quot; on the two sides where the sub isn&#039;t facing the panels, and a thinner sheet (I think they make 1/4&quot; mdf) in front of the subs?&nbsp; Any idea what type of glue?&nbsp; I assume I&#039;ll need to thoroughly spread the glue so every square inch of the panels is glued to the board so there is no vibration against the board.Also--as mentioned above--I&#039;ll use a fiberglass resin to seal and waterproof the boards first (no direct contact with water in this area--just exposure to the atmospheric humidity).&nbsp; BTW--will the fiberglass resin that is sold in Lowes (I think it&#039;s made by bondo) work okay?&nbsp; I know it might not be the best, but it&#039;s easily accessible.</blockquote>

[QUOTE="jonathanengr1, post: 7365065, member: 633698"] So... I don't want to use Dynamat for this purpose? I think that's what you're implying. If I choose to use mdf, will it block the sub's output if I put it in front of the subs? Or will the sound travel through it? If mdf has the tendency to block the output, should I use 3/4" on the two sides where the sub isn't facing the panels, and a thinner sheet (I think they make 1/4" mdf) in front of the subs? Any idea what type of glue? I assume I'll need to thoroughly spread the glue so every square inch of the panels is glued to the board so there is no vibration against the board. Also--as mentioned above--I'll use a fiberglass resin to seal and waterproof the boards first (no direct contact with water in this area--just exposure to the atmospheric humidity). BTW--will the fiberglass resin that is sold in Lowes (I think it's made by bondo) work okay? I know it might not be the best, but it's easily accessible. [/QUOTE]

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