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cylindrical enclosure
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<blockquote data-quote="adalos" data-source="post: 3060186" data-attributes="member: 577151"><p>I'm going to build a fiberglass enclosure in my 2003 celica. I want to keep everything hidden, so my plan is to build the enclosure in the spare tire well:</p><p></p><p><img src="http://myspace-797.vo.llnwd.net/00257/79/78/257388797_l.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>unlike that guy, i am going to take the tire out and actually make a fiberglass enclosure with an MDF top.</p><p></p><p>i spent a lot of time looking here for people who have built cylindrical enclosures but pretty much came up empty. i have seen some mention that a cylinder should actually perform better than a box or rectangle due to how waves bounce off flat walls vs rounded ones.</p><p></p><p>i'm going to be making a sealed 1.25ft3 enclosure, so check if my math is right here:</p><p></p><p>wheel well dimensions:</p><p></p><p>width = 20 inches</p><p></p><p>depth = 9 inches</p><p></p><p>volume of a cylinder = Pi x Radius^2 x height</p><p></p><p>3.14 x .833^2 x .75 = 1.65 cubic feet</p><p></p><p>So that's the total cubic feet of my wheel well if i did the whole thing. I'm only looking to make a 1.25 cubic foot enclosure, so in order to achieve 1.25, i need to find the appropriate height to make the enclosure:</p><p></p><p>3.14 x .833^2 x X = 1.25</p><p></p><p>X = 1.25/2.18</p><p></p><p>X = 0.57 (feet) = 6.88 inches = ~ 6 7/8 inches</p><p></p><p>So I'll probably just go with an even 7 inch height to make up for the thickness of the fiberglass.</p><p></p><p>This is a rough photoshop job of what I'm trying to do:</p><p></p><p><img src="http://a459.ac-images.myspacecdn.com/images01/118/l_fd120872b0a08ef23ee0518943bb738a.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>As I said, I want everything to be hidden, so the trunk carpet will be going back over it. My plan is to mount a raised wooden square around the sub and then mount metal pipes as a fabricated grill to both keep the carpet a few inches above the sub and to protect it from anything that gets put on top of it (groceries mainly). the hatch that you see will have it's center cut out to allow the sub output to go through without any impedence.\</p><p></p><p>anyhow, that's my plan. does this sound functional and feasible? any issues you can see me running into? i might end up raising the floor a little as well, depending on how far things stick out, and to possibly get my amp and wiring all under there but with enough airflow to not overheat. i want people who look into my car's hatch to see what appears to be nothing but stock flooring.</p></blockquote><p></p>
[QUOTE="adalos, post: 3060186, member: 577151"] I'm going to build a fiberglass enclosure in my 2003 celica. I want to keep everything hidden, so my plan is to build the enclosure in the spare tire well: [IMG]http://myspace-797.vo.llnwd.net/00257/79/78/257388797_l.jpg[/IMG] unlike that guy, i am going to take the tire out and actually make a fiberglass enclosure with an MDF top. i spent a lot of time looking here for people who have built cylindrical enclosures but pretty much came up empty. i have seen some mention that a cylinder should actually perform better than a box or rectangle due to how waves bounce off flat walls vs rounded ones. i'm going to be making a sealed 1.25ft3 enclosure, so check if my math is right here: wheel well dimensions: width = 20 inches depth = 9 inches volume of a cylinder = Pi x Radius^2 x height 3.14 x .833^2 x .75 = 1.65 cubic feet So that's the total cubic feet of my wheel well if i did the whole thing. I'm only looking to make a 1.25 cubic foot enclosure, so in order to achieve 1.25, i need to find the appropriate height to make the enclosure: 3.14 x .833^2 x X = 1.25 X = 1.25/2.18 X = 0.57 (feet) = 6.88 inches = ~ 6 7/8 inches So I'll probably just go with an even 7 inch height to make up for the thickness of the fiberglass. This is a rough photoshop job of what I'm trying to do: [IMG]http://a459.ac-images.myspacecdn.com/images01/118/l_fd120872b0a08ef23ee0518943bb738a.jpg[/IMG] As I said, I want everything to be hidden, so the trunk carpet will be going back over it. My plan is to mount a raised wooden square around the sub and then mount metal pipes as a fabricated grill to both keep the carpet a few inches above the sub and to protect it from anything that gets put on top of it (groceries mainly). the hatch that you see will have it's center cut out to allow the sub output to go through without any impedence.\ anyhow, that's my plan. does this sound functional and feasible? any issues you can see me running into? i might end up raising the floor a little as well, depending on how far things stick out, and to possibly get my amp and wiring all under there but with enough airflow to not overheat. i want people who look into my car's hatch to see what appears to be nothing but stock flooring. [/QUOTE]
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