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square port calculator

Printed From: the12volt.com
Forum Name: New Ideas for the12volt.com
Forum Discription: Tells us what you'd like to see on the12volt.com.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=107422
Printed Date: March 29, 2024 at 6:13 AM


Topic: square port calculator

Posted By: SOUND PRESSURE
Subject: square port calculator
Date Posted: September 14, 2008 at 1:16 AM

Hello all,

Is there a way we can put a square port calculator up as we did with the round port calculator to where we can input different length, and width's to come up with the correct tuning frequency port?

Thanks!

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Sound Pressure

You know you have the right amount of pressure when your eyes start to water! Now you've got Juice!



Replies:

Posted By: i am an idiot
Date Posted: September 14, 2008 at 4:53 AM

In case there are too many variables with height and width of a slot port to make a calculator, all you need to do is convert the round port to a slot or square port with the same surface area.  For example, a 6 inch round port has a surface area of 28 square inches.  This will be the same as a port of 2 X 14 inches, or 4 X 7 inches  or a square port of 5.3 inches.

The formula for for determining the surface area of a circle is,  PIE X Radius Squared.   A 6 inch port  3.14159 X  (3 X 3)  = 28.27431

4 inch port   3.14159 X (2 X 2)  = 12.566  Which is the same area as a port 1 X 12 inches.  Or a 2 X 6 inch port. 

Hopefully he can help you out with a calculator, but if he can't I hope this helps you. 





Posted By: SOUND PRESSURE
Date Posted: September 14, 2008 at 2:54 PM
You are absolutely right thankyou!
I was just thinking that to take out the math for some the calculator idea would be fast and simple as is figuring the port size but just an idea.
Thanks bud!




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Sound Pressure

You know you have the right amount of pressure when your eyes start to water! Now you've got Juice!




Posted By: the12volt
Date Posted: September 15, 2008 at 7:01 PM
It's on my list. I'll do what I can to make some time to knock it out this week-end.

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Posted By: SOUND PRESSURE
Date Posted: September 17, 2008 at 10:29 AM
Thanks 12volt

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Sound Pressure

You know you have the right amount of pressure when your eyes start to water! Now you've got Juice!




Posted By: the12volt
Date Posted: December 06, 2008 at 2:18 PM
i am an idiot wrote:

In case there are too many variables with height and width of a slot port to make a calculator, all you need to do is convert the round port to a slot or square port with the same surface area.  For example, a 6 inch round port has a surface area of 28 square inches.  This will be the same as a port of 2 X 14 inches, or 4 X 7 inches  or a square port of 5.3 inches.

The formula for for determining the surface area of a circle is,  PIE X Radius Squared.   A 6 inch port  3.14159 X  (3 X 3)  = 28.27431

4 inch port   3.14159 X (2 X 2)  = 12.566  Which is the same area as a port 1 X 12 inches.  Or a 2 X 6 inch port. 

Hopefully he can help you out with a calculator, but if he can't I hope this helps you. 


The slot port length calculator is finally available. I used your math in the examples above to calculate the diameter of an equivalent round port based on the area of the slot determined by the width and height fields, but I did not round off Pi, so the output will differ slightly from your examples. Give it a try and let me know if this is what you wanted.



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Posted By: i am an idiot
Date Posted: December 06, 2008 at 3:44 PM
Don't use my calculations, did you notice my username???




Posted By: the12volt
Date Posted: December 06, 2008 at 3:45 PM
Too late.

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Posted By: the12volt
Date Posted: December 06, 2008 at 3:47 PM
Actually I used my own math, but I did base it on converting the area of the slot to that of a cirlce to get a diameter to calculate length. 

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Posted By: SOUND PRESSURE
Date Posted: December 08, 2008 at 10:05 AM
Thanks guys! I am sure that this will help not only me but others as well. I appreciate it.

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Sound Pressure

You know you have the right amount of pressure when your eyes start to water! Now you've got Juice!




Posted By: the12volt
Date Posted: December 08, 2008 at 10:49 AM
You're welcome. I only wish I would have had the time to get to it sooner.

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