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<blockquote data-quote="B&amp;amp;amp;R Innovation2" data-source="post: 375696" data-attributes="member: 547489">First. MDF has acoustical properties that you wont find with plywood. It&#039;s not nearly as pourus which is very important. When you&nbsp; get a chance stick your head into a plywood sealed box and yell...and then do it in an MDF and I think you&#039;ll quickly realize why people use it. I&#039;ve made plywood boxes when I was first getting into this stuff and they were positivly horriable.Don&#039;t use dynomat inside...its niether cost effective nor effiecent. The point of polyfill is to slow waves from bouncing off the inside walls which will extend any given basshit and make the box seem bigger. Dynomat will obsorb the sound. Also if you do decide to use plywood...paint the inside of the box...regadless its not anything that MDF will be. Plywood is what I&#039;d call LDF.As for your box size...mine is 16 cubes and it took 2 1/2 pieces precision cut and well thought out. If you buy it at a home depot they&#039;ll make cuts for you so if you think it out well and have them cut sizes you need you can save yourself some home cutting time plus you&#039;ll fit it much easier into your car.</blockquote>

[QUOTE="B&R Innovation2, post: 375696, member: 547489"] First. MDF has acoustical properties that you wont find with plywood. It's not nearly as pourus which is very important. When you get a chance stick your head into a plywood sealed box and yell...and then do it in an MDF and I think you'll quickly realize why people use it. I've made plywood boxes when I was first getting into this stuff and they were positivly horriable. Don't use dynomat inside...its niether cost effective nor effiecent. The point of polyfill is to slow waves from bouncing off the inside walls which will extend any given basshit and make the box seem bigger. Dynomat will obsorb the sound. Also if you do decide to use plywood...paint the inside of the box...regadless its not anything that MDF will be. Plywood is what I'd call LDF. As for your box size...mine is 16 cubes and it took 2 1/2 pieces precision cut and well thought out. If you buy it at a home depot they'll make cuts for you so if you think it out well and have them cut sizes you need you can save yourself some home cutting time plus you'll fit it much easier into your car. [/QUOTE]

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