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<blockquote data-quote="hispls" data-source="post: 8722940" data-attributes="member: 614752">Imagine not using Neodymium motor subs and Lithium batteries in 2020.Sort of a different animal in that sort of full range cabinet, but yes, MDF isn&#039;t the best there.&nbsp; &nbsp; Really IMO if you&#039;re getting &quot;resonance and vibration&quot; you have failed to build thick enough sides or used proper bracing, this should not be an issue with a high powered subwoofer box if done correctly.I personally had good success with OSB sub flooring in my C-pillar wall and have seen it used effectively in another build locally.&nbsp; It is extremely rigid BUT it&#039;s a nightmare to work with, rather ugly, and possibly porous (though mine was all covered with epoxy resin).&nbsp;&nbsp; I have also heard from a reliable source who has done extensive testing that particle board + resin nets the same numbers as MDF + resin for SPL applications.The big benefit of MDF is low cost and it is very easy to router/shape/sand.&nbsp; If I have time next year I&#039;m probably going to rebuild the baffle in my Jeep to try different sub sizes.&nbsp; My plan is to use a variety of wood in the layers and keep MDF on the outside so it can be more easily rounded where needed and provide a nice smooth surface for paint.IMO the bigger question should be how to build the box sturdy, rigid, and airtight.&nbsp; If you focus on these fundamentals it shouldn&#039;t much matter what you use for material.</blockquote>

[QUOTE="hispls, post: 8722940, member: 614752"] Imagine not using Neodymium motor subs and Lithium batteries in 2020. Sort of a different animal in that sort of full range cabinet, but yes, MDF isn't the best there. Really IMO if you're getting "resonance and vibration" you have failed to build thick enough sides or used proper bracing, this should not be an issue with a high powered subwoofer box if done correctly. I personally had good success with OSB sub flooring in my C-pillar wall and have seen it used effectively in another build locally. It is extremely rigid BUT it's a nightmare to work with, rather ugly, and possibly porous (though mine was all covered with epoxy resin). I have also heard from a reliable source who has done extensive testing that particle board + resin nets the same numbers as MDF + resin for SPL applications. The big benefit of MDF is low cost and it is very easy to router/shape/sand. If I have time next year I'm probably going to rebuild the baffle in my Jeep to try different sub sizes. My plan is to use a variety of wood in the layers and keep MDF on the outside so it can be more easily rounded where needed and provide a nice smooth surface for paint. IMO the bigger question should be how to build the box sturdy, rigid, and airtight. If you focus on these fundamentals it shouldn't much matter what you use for material. [/QUOTE]

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