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<blockquote data-quote="keep_hope_alive" data-source="post: 7464995" data-attributes="member: 576029">are you just using the cavity between the apillar and the panel as your airspace?&nbsp; how low do you expect to play your mids?&nbsp; how are you sealing the panel to the vehicle?resin on cloth doesn&#039;t provide strength, it&#039;s just a base - you need layers of fiberglass for strength.&nbsp;&nbsp; this method (cloth/resin/filler) usually results in work that doesn&#039;t hold up and cracks during install.i would add a few layers of 1.5oz fiberglass matte, then body filler.&nbsp; i would use weatherstripping foam (closed cell) along the perimeter of the trim where it meets up with the metal.&nbsp; i would fill the cavity (both the steel apillar cavity and the airspace between the trim and apillar) with acoustic fiberglass batt for some absorption.&nbsp; i would also add some deadener to the apillar to control resonance.you&#039;re looking fine from a cosmetic standpoint, but if you want these apillars to perform like speaker enclosures, they need to be constructed like enclosures.&nbsp; //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</blockquote>

[QUOTE="keep_hope_alive, post: 7464995, member: 576029"] are you just using the cavity between the apillar and the panel as your airspace? how low do you expect to play your mids? how are you sealing the panel to the vehicle? resin on cloth doesn't provide strength, it's just a base - you need layers of fiberglass for strength. this method (cloth/resin/filler) usually results in work that doesn't hold up and cracks during install. i would add a few layers of 1.5oz fiberglass matte, then body filler. i would use weatherstripping foam (closed cell) along the perimeter of the trim where it meets up with the metal. i would fill the cavity (both the steel apillar cavity and the airspace between the trim and apillar) with acoustic fiberglass batt for some absorption. i would also add some deadener to the apillar to control resonance. you're looking fine from a cosmetic standpoint, but if you want these apillars to perform like speaker enclosures, they need to be constructed like enclosures. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]

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