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  #1  
Old 06-04-2011, 11:43 AM
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Default Can U Caluclate this Port

I want to convert my Sealed enclosure into a ported enclosure... without going out to buy aeroports and modifing them to fit

Building a square port out of scrap MDF is the best route for me but...

How do I calculate the tuning and port area. If someone could do the math for me i'd appreciate it. Box is 2.91 after displacements and I have the rest of the specs if you post here.

Thanks
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Old 06-04-2011, 11:49 AM
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What do you want it tuned to? And what are the dimensions of the box, L x W x H? and is it single baffle 3/4'' mdf all the way around?
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Last edited by NoPh33rRaCiNg; 06-04-2011 at 11:55 AM.
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Old 06-04-2011, 11:55 AM
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We definitely need to know the box dimensions and the what driver.
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Old 06-04-2011, 12:14 PM
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NOTE: Will be an External Port firing through armrest into vehicle

Box:
3/4" birch all the way around...

Dimensions:
15"x31"x15" (3.11 cubes) ....Driver displacement brings it down to (2.9 cubes)

Max port dimensions
12" Height
8.5" Width

I want tuning to be 33hz

Last edited by Slaughterhouse; 06-04-2011 at 12:18 PM.
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Old 06-04-2011, 12:38 PM
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will having the external port first out the back of the box be an issue or does it not matter?
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Old 06-04-2011, 12:39 PM
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What woofer is it?
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Old 06-04-2011, 12:39 PM
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12" tc axis... I don't need a complete design

I have the box already just need to know what size to construct the port in order to get a 33hz tuning.

Last edited by Slaughterhouse; 06-04-2011 at 12:55 PM.
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Old 06-04-2011, 01:11 PM
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2.25x12.5 needs to be 19.5" long for 33hz.
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Old 06-04-2011, 02:09 PM
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Quote:
Originally Posted by Inferno333 View Post
2.25x12.5 needs to be 19.5" long for 33hz.
Thats only 28.x sq inches of port. Don't you think he'd want at least 40
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Old 06-04-2011, 04:43 PM
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Quote:
Originally Posted by NoPh33rRaCiNg View Post
Thats only 28.x sq inches of port. Don't you think he'd want at least 40
you're correct.
This is for 2 12" subs btw... more port please
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