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<blockquote data-quote="Heresy" data-source="post: 106749" data-attributes="member: 540683"><p>Plexiglass is a lot more flexible than MDF, even the 1" stuff will flex if it is a large enough piece. But it can be braced and secured to where it doesn't really matter as much(key term "as much"). I don't know how to seal it exactly because I have never worked with it in a sub box application.</p><p></p><p>As far as dynamat, don't worry about it. It shouldn't make any audible difference if it is there or not. It is meant to change the resonant frequency of the material it is sprayed on, with 3/4" MDF, it won't really matter.</p><p></p><p>Ask the more experienced members of the board if you need to know more(or if they want to correct me<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /> ).</p></blockquote><p></p>
[QUOTE="Heresy, post: 106749, member: 540683"] Plexiglass is a lot more flexible than MDF, even the 1" stuff will flex if it is a large enough piece. But it can be braced and secured to where it doesn't really matter as much(key term "as much"). I don't know how to seal it exactly because I have never worked with it in a sub box application. As far as dynamat, don't worry about it. It shouldn't make any audible difference if it is there or not. It is meant to change the resonant frequency of the material it is sprayed on, with 3/4" MDF, it won't really matter. Ask the more experienced members of the board if you need to know more(or if they want to correct me:D ). [/QUOTE]
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