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| Date: |
November 18, 2009 at 16:56:45 |
| From: |
Christian, [174.45.40.24] |
| Subject: |
port calculation. |
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Greeting. I'm building this (http://www.parts-express.com/pdf/290-
597c.pdf) medium sized vented cab for the eminence 3015 speaker to
be used from 80hz - 250hz.
I am trying to substitute a single cabinet wide rectangular port instead
of the two 4" diameter round ports. I get a port area of 25.12
(3.14x2x2)x2 for the two round ports, which would give me a 1.15 X
22.5 rectangular port. The baffle is 22.5 wide. This seems wrong to
me, but I'm not sure how.
Is this too narrow a port? It certainly doesn't seem equal in area to the
round ports originally spec'ed. Should the port length remain the
same?
thanks for any insight.
Moderated By: brian@diysubwoofers.org
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