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Date: February 11, 2008 at 19:34:37
From: Brian, [65.48.134.222]
Subject: Re: A Question of Vents


>That seems like it would get me an accurate measure,
>but does anyone have a rule of thumb that gets them
>pretty dang close?

Measure along the center of any curve to get the best length estimate.


>option 2: I was thinking of an "industrial" design
>that would have the vents poking out of the top like
>smoke stacks. Is there a reason that vents cannot
>extend past the physical bounds of the box?

None at all. In fact, I think at least one of Hsu Research's commercial subwoofer offerings has vents that extend outside of the box. What WILL change however is the "end-effect", which is dependent on how the end of the vent is terminated (on a wall, or in free air, sharp, or rounded off, etc.) Have a look at the vent calculations page for more details.


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