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Hourglass Shapped port?

Printed From: the12volt.com
Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=43849
Printed Date: May 15, 2024 at 7:06 PM


Topic: Hourglass Shapped port?

Posted By: BoominRolla
Subject: Hourglass Shapped port?
Date Posted: November 26, 2004 at 6:38 PM

Ok, The rear opening of my fold down seats is about 29" and with the 2 12" Rockford Fosgate T1 woofers and rings it takes up a good part of that... Now my question is that can I design a port out of who knows what so far? That will be about 4" wide at the top and bottom and be closer to 1 or 2" at the center between the 2 woofers... I'd like to post a pic to show what I mean but hopefully I described it well enough... Has this been down before the internal cubic feet of the box is now 4.6599 before all other displacement of woofers, port, and plexi. I am thinking of making it out of 1/2" plexi cause I know someone with a bender and I think clear ports look nice. I'll have awhile to polish it and get it to look nice. What else do you think I could do for options? I think i'll loose alot of port area if I go with 1/2" plexi. but there again I don't know how much port area I need with that box? maybe someone can PM me with a lil help in that area if they want?  THANK YOU VERY MUCH SO FAR FOR ALL OF YOUR REPLYS!!! 



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Replies:

Posted By: auex
Date Posted: November 27, 2004 at 2:08 AM
I don't think that it would sound too good, but I would make a quick cheap one just to see what it sounds like first before making a decision.

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Posted By: audiomechanic
Date Posted: November 27, 2004 at 1:57 PM
as long as the surface area is correct and the air can move freely with out restriction, you shouls be fine.....another option is to do 2 round 4" ports and make a plexi piece that is cosmetic.

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Posted By: BoominRolla
Date Posted: November 27, 2004 at 3:34 PM
Ok, thanks for the advice so far... Now if I do decide to go with lets say maybe 2 3" or 4" ports  what if the front side of the box is angled slightly? will you just take the dimensions off that and dividel the top by the bottom to get the correct port length... I know it'll be about a matter if maybe a 1/4" to a 1/2" but I just wanna make it as close to accurate as possible

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