Ok, Once more, double check my port length

[qtipextra 5,000+ posts]

Effective port length = 25", right?

Total length, down the center is 28.5. Take away half of the port width (3.5") for end correction, and that gives me an even 25" of effective port length.

Did I get it correct?

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[Immacomputer 10+ year member]

Nope. Your effective port length is:

19+3+3+3.5+3.5 = 32"

End correction gets added, not subtracted.

 

[qtipextra 5,000+ posts]

Oh, OK. Let me try this again:

I shortened up the port so it doesn't go clear to the end of the box.

So now, I get 14 + 3 + 3 + 1 + 3.5 (end correction) = 24.5". 24.5" Is close enough for me.

I sure hope I got it this time.

 

[Immacomputer 10+ year member]

That's correct, but I don't like the look of the positioning.

 

[qtipextra 5,000+ posts]

Yeah I dont especially like that either but I dont know how else to do it. It shouldn't matter though, should it?

 

[qtipextra 5,000+ posts]

Is end correction figured in no matter what, even without a 90* bend?

And I was also wondering:

I am using Bass Box Pro. So when I have it figured that my port should be 24.5" long, is it figuring end correction? Or does it matter? I guess what I mean is, does my effective port length drawn agree with BBP's port length?

 

[qtipextra 5,000+ posts]

Is end correction figured in no matter what, even without a 90* bend?
And I was also wondering:

I am using Bass Box Pro. So when I have it figured that my port should be 24.5" long, is it figuring end correction? Or does it matter? I guess what I mean is, does my effective port length drawn agree with BBP's port length?

???

 

[germandark 10+ year member]

there is trapped air. get rid of all that gunk, make the single port wall longer and then throw one 45 in the corner.

 

[qtipextra 5,000+ posts]

there is trapped air. get rid of all that gunk, make the single port wall longer and then throw one 45 in the corner.

I'd love to take it all the way to the wall and have one 45, but then it screws with the length.

Refer to the thread too:

http://www.caraudio.com/forum/showthread.php?t=378749