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<blockquote data-quote="dopey" data-source="post: 916277" data-attributes="member: 545708">Just make a box. When you start putting it together do the top/bottom and sides first. then put in the port.After that put on the front and back pieces. Then router out the port. As for the port ends , it won&#039;t hurt to round them over to eliminate port noise. Your question about the area of the port. Rule of thumb is the port cannot be any smaller than 1/4 of the speakers surface area (sd). Being this is a square you need to measure the cone, this does not include the surround.Measure from where the cone mets the surround across to the other side. I don&#039;t have a square in front of me but assuming the speaker is 11&quot; across. That&#039;s 11x11=121 , well 1/4 of that surface area is 30.25 . So you&#039;re well in range of not getting port noise.Also something else to remember is if you go with a larger surface area for the port you&#039;ll also get more output , but lose control of the driver with extremely large areas. That&#039;s why spl vehicles have ports large enough to walk through , but if you try to listen to music in them they sound horrible. Hope this answers your questions..</blockquote>

[QUOTE="dopey, post: 916277, member: 545708"] Just make a box. When you start putting it together do the top/bottom and sides first. then put in the port.After that put on the front and back pieces. Then router out the port. As for the port ends , it won't hurt to round them over to eliminate port noise. Your question about the area of the port. Rule of thumb is the port cannot be any smaller than 1/4 of the speakers surface area (sd). Being this is a square you need to measure the cone, this does not include the surround.Measure from where the cone mets the surround across to the other side. I don't have a square in front of me but assuming the speaker is 11" across. That's 11x11=121 , well 1/4 of that surface area is 30.25 . So you're well in range of not getting port noise. Also something else to remember is if you go with a larger surface area for the port you'll also get more output , but lose control of the driver with extremely large areas. That's why spl vehicles have ports large enough to walk through , but if you try to listen to music in them they sound horrible. Hope this answers your questions.. [/QUOTE]

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