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<blockquote data-quote="graffix989" data-source="post: 710343" data-attributes="member: 557480">ive got two Audioban AW1206T subs... im tryin to build a everyday bass preforming box.&nbsp; they recomend for a single sub the following:Air Space&nbsp;&nbsp; 2.3port size&nbsp; &nbsp;&nbsp; 4x7.25port vel&nbsp; &nbsp; &nbsp;&nbsp; 19.6Tune Freq&nbsp;&nbsp; 38hzSub Disp&nbsp; &nbsp; &nbsp; 0.25Port Disp&nbsp; &nbsp; &nbsp; 0.046Total Vol.&nbsp; &nbsp; &nbsp; 2.5so should i double the port size scense im doubling everything else?? or would it be better to make a 5cf box, with two 4x7.25 ports with a divider in the middle...now my second question is, they give specs for an ultimate box too. its port size is (2) 4x12, with 3.5cf total volume....&nbsp; am i reading that wrong, cuz im takin it that i should make an 8x12 port. i dont even know if i can make a 7cf box yet so im concentrating more on the everyday box.Third, would a coat of polyurithane work for coating the inside of the box?? what would be better for the same cash? what would be the best for more dough...Fourth, what kind of tolerance is there for mis-measuring on the box\port dimentions to get the same result. like would half an inch make it off by 5 or more hz??im still not sure as to how the whole port thing works, i know its all about airflow but which direction an where is it most important..</blockquote>

[QUOTE="graffix989, post: 710343, member: 557480"] ive got two Audioban AW1206T subs... im tryin to build a everyday bass preforming box. they recomend for a single sub the following: Air Space 2.3 port size 4x7.25 port vel 19.6 Tune Freq 38hz Sub Disp 0.25 Port Disp 0.046 Total Vol. 2.5 so should i double the port size scense im doubling everything else?? or would it be better to make a 5cf box, with two 4x7.25 ports with a divider in the middle... now my second question is, they give specs for an ultimate box too. its port size is (2) 4x12, with 3.5cf total volume.... am i reading that wrong, cuz im takin it that i should make an 8x12 port. i dont even know if i can make a 7cf box yet so im concentrating more on the everyday box. Third, would a coat of polyurithane work for coating the inside of the box?? what would be better for the same cash? what would be the best for more dough... Fourth, what kind of tolerance is there for mis-measuring on the box\port dimentions to get the same result. like would half an inch make it off by 5 or more hz?? im still not sure as to how the whole port thing works, i know its all about airflow but which direction an where is it most important.. [/QUOTE]

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