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<blockquote data-quote="wolfey" data-source="post: 83720" data-attributes="member: 544404">lone ranger, are the internal or external dimensions?&nbsp; are you going to have lots of bracing inside or what? seems like you&#039;ll have larger than a 5 cf box even if you do, but weather those are internal or external dimensions is a big difference, cus then you&#039;ll have to subtract 1.5 inches off the hight, width, and depth, maybe more if you double baffled it.external dimensions i get:(18x35x24) /1728 =8.75 cf - (5x14x11/1728)=8.3 cfnow lets say you gave us external dimensions, and you have a double baffle, and the baffle is on top, this gives you:15.75 x 33.5 x 22.5 /1728= 6.8 -(5x14x11/1728)=6.4 cfso it makes a big difference depending on what measurements you gave us, but theres no way you would get 5 cf with those dimensions unless you had the whole thing double baffled and tons of extra bracing, i don&#039;t know any subs that would need that much though.&nbsp; oh and you can subtract .1-.2 tops for your sub, i don tthink anything except 18&#039;s are bigger than .2, not sure on that though, i might be totally wrong, i thought someone said my brahma was lke .12 though and its pretty **** big.&nbsp; Also, why do you want to port so high, thats gunna sound like ***. and that long of a port should be lower than 52 like lone ranger said. i guess if its only for spl then tune it at 52 hz</blockquote>

[QUOTE="wolfey, post: 83720, member: 544404"] lone ranger, are the internal or external dimensions? are you going to have lots of bracing inside or what? seems like you'll have larger than a 5 cf box even if you do, but weather those are internal or external dimensions is a big difference, cus then you'll have to subtract 1.5 inches off the hight, width, and depth, maybe more if you double baffled it. external dimensions i get: (18x35x24) /1728 =8.75 cf - (5x14x11/1728)=8.3 cf now lets say you gave us external dimensions, and you have a double baffle, and the baffle is on top, this gives you: 15.75 x 33.5 x 22.5 /1728= 6.8 -(5x14x11/1728)=6.4 cf so it makes a big difference depending on what measurements you gave us, but theres no way you would get 5 cf with those dimensions unless you had the whole thing double baffled and tons of extra bracing, i don't know any subs that would need that much though. oh and you can subtract .1-.2 tops for your sub, i don tthink anything except 18's are bigger than .2, not sure on that though, i might be totally wrong, i thought someone said my brahma was lke .12 though and its pretty **** big. Also, why do you want to port so high, thats gunna sound like ***. and that long of a port should be lower than 52 like lone ranger said. i guess if its only for spl then tune it at 52 hz [/QUOTE]

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