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Ported box help for a 8" Alpine type R
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<blockquote data-quote="ancorp" data-source="post: 8139949" data-attributes="member: 633405"><p>How thick is the wood? If its external dimensions are 17 x 18 x 6, and its .75" thick wood, you have around .66 cubes before displacement. Too small to be ported IMO because the port will eat up a lot of room, unless you use an external port. If you use .5" wood (make sure to brace it), you'd have around .78 cubes. At best, with .78 before displacements, you could try to use a 15" long 3" round port to get it tuned to 40hz. Your goal of 36hz is just too low for a box this small.</p><p></p><p>I think you're better off sealed. Or a bigger box.</p></blockquote><p></p>
[QUOTE="ancorp, post: 8139949, member: 633405"] How thick is the wood? If its external dimensions are 17 x 18 x 6, and its .75" thick wood, you have around .66 cubes before displacement. Too small to be ported IMO because the port will eat up a lot of room, unless you use an external port. If you use .5" wood (make sure to brace it), you'd have around .78 cubes. At best, with .78 before displacements, you could try to use a 15" long 3" round port to get it tuned to 40hz. Your goal of 36hz is just too low for a box this small. I think you're better off sealed. Or a bigger box. [/QUOTE]
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Ported box help for a 8" Alpine type R
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