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<blockquote data-quote="keep_hope_alive" data-source="post: 7366031" data-attributes="member: 576029">i would start by de-coupling the sub enclosure from the boat.&nbsp; you&#039;re inducing vibrations structurally - de-coupling will reduce the transfer of enclosure vibrations to the aluminum of the boat.i would start by supporting the sub from only the corners with neoprene closed-cell foam.&nbsp; minimize contact area, and any contact area would be de-coupled.also, if the sub enclosure was more rigid, fewer vibrations would be transferred.&nbsp; decoupling the sub frame from the enclosure is another effective method of reducing structure borne vibrations.&nbsp; non-hardening modeling clay is used to decouple speakers and subs, you just need to enclose the clay with deadening product to hold it in place (gets soft in high temps, which is part of why it works).&nbsp; i&#039;ve seen silicone used (never hardens) but silicone fumes aren&#039;t good for speakers/subwoofers.</blockquote>

[QUOTE="keep_hope_alive, post: 7366031, member: 576029"] i would start by de-coupling the sub enclosure from the boat. you're inducing vibrations structurally - de-coupling will reduce the transfer of enclosure vibrations to the aluminum of the boat. i would start by supporting the sub from only the corners with neoprene closed-cell foam. minimize contact area, and any contact area would be de-coupled. also, if the sub enclosure was more rigid, fewer vibrations would be transferred. decoupling the sub frame from the enclosure is another effective method of reducing structure borne vibrations. non-hardening modeling clay is used to decouple speakers and subs, you just need to enclose the clay with deadening product to hold it in place (gets soft in high temps, which is part of why it works). i've seen silicone used (never hardens) but silicone fumes aren't good for speakers/subwoofers. [/QUOTE]

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