Anyone Want To Help Me With A Box Design?

[Jonahdude 10+ year member]

I'm looking to build a ported box for 2 Pioneer TS-W305 subwoofers, but I'm not sure exactly how to make it. I want around 1.4 ft^3 net volume per sub, and tuned to around 30hz. I'm not sure if I should make the port out of PVC pipe or make a slot port, I have no idea how to make slot ports and I don't know how to figure port displacement for the PVC pipe. Would someone like to design a box for me, or at least point me in the right direction? I drive a 1994 Sentra, so trunk space is pretty limited.

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[supa_c 5,000+ posts]

Would you be willing to spend $8 for someone to do it all for you ?

 

[Jonahdude 10+ year member]

Do all what for me?

 

[supa_c 5,000+ posts]

The design.

All you would need to do is make the box out of wood

 

[Jonahdude 10+ year member]

$8? Not really. Really all I need is to know how to calculate port displacement. I'm going to be using 4" PVC pipe for the port.

 

[req 5,000+ posts]

its a little tougher than you think buddy.

 

[monte_carlo97 10+ year member]

not exactly the easiest of things to do. you need to have a good idea what you are doing.

 

[BulldogSr04 10+ year member]

Or you could get it for free by doing my ipod link //content.invisioncic.com/y282845/emoticons/thumbsupwink.gif.129404938effda6ad9cca39e7f4b58a3.gif

I can teach you too, just ^^^

 

[Jonahdude 10+ year member]

not exactly the easiest of things to do. you need to have a good idea what you are doing.

Well I'm willing to learn, everyone has to start somewhere. I'm definitely a DIY kind of guy, I'm not about to pay someone to do something that I'll probably enjoy doing myself.

 

[Simos 10+ year member]

If you know what frequency and box volume you want to use you still need to have an idea of what size port you want to use (cross sectional area). For instance, with 2.8 ft^3 net box volume, tuned to 30 Hz, using a 4" diameter pvc pipe, the pipe would have to be 10.5" long.

 

[Simos 10+ year member]

Check this link out I put on ICIX, might help you out.

http://www.icixsound.com/vb/showthread.php?t=5028

 

[Jonahdude 10+ year member]

If you know what frequency and box volume you want to use you still need to have an idea of what size port you want to use (cross sectional area). For instance, with 2.8 ft^3 net box volume, tuned to 30 Hz, using a 4" diameter pvc pipe, the pipe would have to be 10.5" long.

I know that, but how much air would 10.5" of 4" PVC pipe displace?

 

[Simos 10+ year member]

area of 4" pipe = (Pi)*(radius^2) = (3.14)*(2^2) = 12.56 in^2

volume of 4" pipe, 10.5" long = (12.56in^2) * (10.5in) = 131.88 in^3

convert cubic inches to cubic feet ---> 131.88/1728 = .076 ft^3

 

[Jonahdude 10+ year member]

area of 4" pipe = (Pi)*(radius^2) = (3.14)*(2^2) = 12.56 in^2
volume of 4" pipe, 10.5" long = (12.56in^2) * (10.5in) = 131.88 in^3

convert cubic inches to cubic feet ---> 131.88/1728 = .076 ft^3

Alright thanks, with that formula making a ported box shouldn't be too hard. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[monte_carlo97 10+ year member]

Well I'm willing to learn, everyone has to start somewhere. I'm definitely a DIY kind of guy, I'm not about to pay someone to do something that I'll probably enjoy doing myself.

Then i would not be the one to teach you b/c i am not good at it myself. Just play arround with programs like winisd.