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Date: March 05, 2010 at 22:29:07
From: Craig, [c-68-59-125-59.hsd1.fl.comcast.net]
Subject: Port calculations


I'm building a 15" sub box (5 cu.ft) and I know the port calculations for round ports and rectangular ports, but I don't see any equations for rectangle ports that use one side of the sub box ass a port wall.

I have to think that this effects the tuning some how. I mean after all instead of the port opening up into the box on all sides it only opens on one side which must effect it, correct?

So my questions are:

1) What do you call a rectangle port that uses one side of the sub box? (a shelf port?)

2) What is the equation for this type of port?

Thanks for the help.
Moderated By: brian@diysubwoofers.org


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