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<blockquote data-quote="pnthr30" data-source="post: 449561" data-attributes="member: 550164">I am planning on building a sealed box for a 10&quot; Alpine Type R (SWR 1021d) sub. I have looked and read a bit on the whole process, but I have seen some differing points regarding shape and wanted to see what you guys think. I am clear on the whole size (volume) issue - in my case, my sub suggests between a .5 and a .8 cubic volume box. I want to make a box with around .66 cubic feet internal volume. Here is where my confusion lies.........Does the shape matter?&nbsp; I have heard that a perfect cube is a bad idea.&nbsp; I would like to stay away from slanted sides (different bottom and top sizes) because I don&#039;t want to have to make angular/mitre cuts. Basically, something resembling a rectangle is easier to make. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Many people say that as long as it isn&#039;t an exact cube you are good to go, but I have seen several places (for example)<a href="http://www.loudspeakers101.com/BoxCalc.htm" target="_blank">http://www.loudspeakers101.com/BoxCalc.htm</a><a href="http://www.kbapps.com/construction.html" target="_blank">http://www.kbapps.com/construction.html</a>that talk about the &quot;golden ratio&quot;. Is this ratio of side length that important? Will there be a noticable difference in sound? I calculated my side length with this ratio and I don&#039;t really like the shape. Also, it appears that the pre-made boxes (Q logic for example) do not follow this ratio.&nbsp;&nbsp; Anyone have any insights?Also, what gauge speaker wire do you suggest? I am pushing this sub with a RF 250a2.Thanks!By the way, the shape I want to use (outside edge to outside edge) is 12 x 12 x 12 (with 3/4&quot; MDF) (internally 10.5 x 10.5 x 10.5) which gives me an internal volume of .6699. What do you guys think of that?</blockquote>

[QUOTE="pnthr30, post: 449561, member: 550164"] I am planning on building a sealed box for a 10" Alpine Type R (SWR 1021d) sub. I have looked and read a bit on the whole process, but I have seen some differing points regarding shape and wanted to see what you guys think. I am clear on the whole size (volume) issue - in my case, my sub suggests between a .5 and a .8 cubic volume box. I want to make a box with around .66 cubic feet internal volume. Here is where my confusion lies.........Does the shape matter? I have heard that a perfect cube is a bad idea. I would like to stay away from slanted sides (different bottom and top sizes) because I don't want to have to make angular/mitre cuts. Basically, something resembling a rectangle is easier to make. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] Many people say that as long as it isn't an exact cube you are good to go, but I have seen several places (for example) [URL="http://www.loudspeakers101.com/BoxCalc.htm"]http://www.loudspeakers101.com/BoxCalc.htm[/URL] [URL="http://www.kbapps.com/construction.html"]http://www.kbapps.com/construction.html[/URL] that talk about the "golden ratio". Is this ratio of side length that important? Will there be a noticable difference in sound? I calculated my side length with this ratio and I don't really like the shape. Also, it appears that the pre-made boxes (Q logic for example) do not follow this ratio. Anyone have any insights? Also, what gauge speaker wire do you suggest? I am pushing this sub with a RF 250a2. Thanks! By the way, the shape I want to use (outside edge to outside edge) is 12 x 12 x 12 (with 3/4" MDF) (internally 10.5 x 10.5 x 10.5) which gives me an internal volume of .6699. What do you guys think of that? [/QUOTE]

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