dd ported box.

[btnhfan 5,000+ posts]

am i doing this right? the dd specs call for

3.00^ft (1) 15" 45.00 sq" vent x 13" long tunes to 45Hz

my depth is 13.5", so i put the port 2 inches away from the side, and make it 10.5 inches long, with a bend that is 2 inches long at end. also, how do i make sure its 45"? is that the total amount of space the port takes up?

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[Moe Lester 10+ year member]

45 sq in of port would mean that the port opening would be 10" x 4.5" or something that will multiply together to get 45. 15x3 would give 45 sq in.

 

[btnhfan 5,000+ posts]

ooo. so then i would have to have 3.3x13.5, because they multiply together to get 45? and i still make it 13" long right?

 

[btnhfan 5,000+ posts]

wait i made an error. its 16" high and 13.5" deep

is this right? its about 45" after i round off 2.8

 

[btnhfan 5,000+ posts]

bump. am i right?

 

[Moe Lester 10+ year member]

I dunno about all ur dimensions and all, but if your box is 3 cubic feet after all displacements, and you have right around 45 sq in port, the port needs to be about 12.6" long.

 

[btnhfan 5,000+ posts]

dd said to have it 13 in.

http://www.ddaudio.com/dd/caraudio/enclosureInfo/boxSize_hiEff.asp

should i have it 13 or 12.6?

 

[Moe Lester 10+ year member]

why not right in the middle //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif .4" wont make hardly any difference at all.

 

[btnhfan 5,000+ posts]

okay then. thanks for the help.