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Pioneer~Saturn
03-01-2009, 01:11 AM
Hey guys,

I don't see that many threads in here about help with designing enclosures, but it is a fairly common topic for posts. I also get quite a number of PM's about designing enclosures, which I don't mind doing them...but designing your own enclosure by hand is a lot more satisfying (atleast to me).

So I'm going to start this thread to guide through how to design yourself a slot-port enclosure without using any software and for completely free (you'll only have to download 'Google Sketch-Up'...which is free)

Anyone with a highschool education and average skills with computers will be able to do this with a fair amount of ease.

You'll need these things open on your computer:

-RE's Enclosure Designer
-Google Sketch-Up
-Your computer's calculator
-Your computer's 'Notepad' feature

(This tutorial is assuming a standard slot-port that is on one side of the enclosure, firing forwards but you can easily adjust these steps to accomodate a side-firing port along with pretty much any rectangular port setup)

First:

-Go to RE's enclosure designer (this will give you a rough idea of what to draw in sketch-up)

-Type in your dimensions (W, H, D) and start adjusting your port width and length to get a good balance of airspace and port area, with the tuning youre looking for

-I like to have this design be a bit larger in airspace and also tuned a bit lower than what you're looking for, because once the sub is accounted for and any 45's in the corners and supports you may want, it will help account for them


Now you will need to go to your Google Sketch-Up window, using a blank page, to begin drawing up your enclosure

The upcoming posts will be a step-by-step guide on what to do to draw up your enclosure and how to do calculations for tuning...enjoy :)

-I don't know if this should be stickied, but it would sure be helpful to those in need of enclosure designs

Pioneer~Saturn
03-01-2009, 01:12 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/A1.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A2.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A3.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A4.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A5.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A6.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A7.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/A8.jpg

Pioneer~Saturn
03-01-2009, 01:12 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/A9.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B1.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B2.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B3.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B4.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B5.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B6.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B7.jpg

Pioneer~Saturn
03-01-2009, 01:14 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/B8.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/B9.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C1.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C2.jpg

Pioneer~Saturn
03-01-2009, 01:16 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/C3.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C4.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C5.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C6.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C7.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C8.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/C9.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D1.jpg

Pioneer~Saturn
03-01-2009, 01:17 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/D2.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D3.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D4.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D5.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D6.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D7.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D8.jpg

http://i638.photobucket.com/albums/uu107/DugRoosa/D9.jpg

Pioneer~Saturn
03-01-2009, 01:17 AM
http://i638.photobucket.com/albums/uu107/DugRoosa/E1.jpg

Pioneer~Saturn
03-01-2009, 01:18 AM
Now that you have the port's length written down along with the cubic inches of net airspace (that you should copy so you can easily paste it later, it comes in very handy rather than typing it...because it should be a moderately large number) you will just simply need to multiply your ports width x height to get your port area.

With all three pieces of info mentioned above you can start your calc's for the final tuning of your enclosure.

Start by:

-Square-root of the the port area

-Multiply this by .823

-Add the length of the port

-Multiply this by the cubic inches of net airspace (which you can just hit ctrl + V to paste it to your calculator for quicker calcs)

Now copy the number you have after these steps

Next step:

-184000000 x port area

-Devide this by the number you came up with in the last step (just hit ctrl+V to paste it for faster calcs)

-Square root this number

-Multiply this number by .159

And you should now have the tuning for your enclosure :)

PS: If this tuning isn't exactly perfect you can go back and tweak your design...

Some rules of thumb:
-The longer the port, the lower the tuning
-The larger the port area, the higher the tuning
-The larger the airspace, the lower the tuning

So, youre going to have to compensate for having a large port area by making it longer, which will take up more space...something also to consider

gotparts90
03-01-2009, 01:22 AM
just seems easier to just build the box. I guess the 3d box for a customer to see is good marketing I just don't see a real use for it.

Pioneer~Saturn
03-01-2009, 01:32 AM
just seems easier to just build the box. I guess the 3d box for a customer to see is good marketing I just don't see a real use for it.

Why/how would you 'just build a box'...? I'd hope you'd like to know what it's tuned to etc...

This is really about showing people how to calculate tuning using math and these techniques so that they can understand how to calculate other port setups with just three bits of information (port area, length, and net airspace)...

alvitae
03-01-2009, 01:34 AM
Cool stuff, Thnx for taking the time.

MmatsDude
03-01-2009, 01:38 AM
Thanks saturn. This was great info and help.

Ps, you havent sent me my design for the 18. :crap:

This should be sticky.

Pioneer~Saturn
03-01-2009, 01:40 AM
No prob, I just wish a long time ago it was layed-out this clearly for me on calculating enclosures...so I made sure everyone can follow this and see what is actually going on..

And I'll get that to you in a sec ;)

gotparts90
03-01-2009, 03:06 AM
well the sketch up seems a bit much, It just seems like it would be faster on paper for a simple thing like the layout. the tuning info and math is a nice tutorial that wasn't there when I posted. The first program for boxes I think I ever used was blaubox I think about 10 years ago maybe. The pspport calculator is nice and easy to use and then I just use pvc instead with an inset wooden flare.

SSS 18734
03-01-2009, 03:57 AM
Nice write up. Although i feel if you're going to be building a box just like the one on RE's enclosure calculator, you might as well just build it exactly as that calculator specifies. There doesn't seem to be a reason to go to the trouble of using sketchup unless you're trying to build a different type of box.

I use a combination of WinISD and sketchup, along with word/notepad to jot down dimensions/specifics that I find as I go along. Just take total airspace necessary + all displacements, and just build a box with the dimensions necessary to achieve that airspace. Then insert ports and bracing as necessary, making sure to double-check as you go along.

Pioneer~Saturn
03-01-2009, 02:48 PM
Thanks guys, but I intend to go further on this tutorial and incorporate double-baffle, supports, and other stuff into it and add onto the general outline that the RE calculator gave you..and eventually step-up to pretty complicated port setups and calcs...but we'll see

And on a piece of paper you cant highlight an area and it tell you exactly the space you have to work with (granted, some simply geometry and you can find out, but it'd take longer)...it's just really handy to have on sketch-up

Pioneer~Saturn
03-14-2009, 03:21 AM
Bump for information :)

Pioneer~Saturn
06-16-2009, 05:40 PM
Bump for info :)

av8ter
06-16-2009, 08:09 PM
Sweet idea man. I downloaded SU and failed to make anything of use with it.

So in your opinion RE's calc is legit as long as you take woofer displacement into your own consideration? Too many ppl talk smack about it but I love using it to base my more complex enclosures off of..........


Kevin

93dakota
06-17-2009, 02:18 AM
BUMP...This should be stickyed

Pioneer~Saturn
06-17-2009, 01:48 PM
Sweet idea man. I downloaded SU and failed to make anything of use with it.

So in your opinion RE's calc is legit as long as you take woofer displacement into your own consideration? Too many ppl talk smack about it but I love using it to base my more complex enclosures off of..........

Kevin

It isnt horrible, it's just a good basis to start your own calculations with and make it with sketchup


BUMP...This should be stickyed

Joo know eet :D

Pioneer~Saturn
06-23-2009, 04:48 PM
ttt for info

DonH
06-23-2009, 05:56 PM
this is all great info but the re calculator isnt all that accurate...but it works lol nice writeup

Pioneer~Saturn
06-23-2009, 05:59 PM
this is all great info but the re calculator isnt all that accurate...but it works lol nice writeup

Why do people keep saying this!? Lol, I know that...I include that to get a place to start with and go into sketchup to do the math, then adjust to where you want so you know the specs are correct.

The math is done by you with an equation...RE's calculator is just to get you started and give you something to work of off and change to your liking.

DonH
06-23-2009, 06:02 PM
Why do people keep saying this!? Lol, I know that...I include that to get a place to start with and go into sketchup to do the math, then adjust to where you want so you know the specs are correct.

The math is done by you with an equation...RE's calculator is just to get you started and give you something to work of off and change to your liking.

well sooooooooorry! :laugh: my apologies! Everyone disregard my previous statement and keep reading this beautiful thread lol.

My apologies
-Don
D.H. Designs

Pioneer~Saturn
06-23-2009, 06:04 PM
Hahaha, tiz cool :D

DonH
06-23-2009, 06:07 PM
Hahaha, tiz cool :D

good. glasses up... and cheers:toast: lol

Pioneer~Saturn
06-23-2009, 06:10 PM
Haha, cheers

Nut Hair Trick
06-24-2009, 11:33 AM
This is an excellent thread Saturn. I'm sure new people like me appreciate the hell out of it, if they arent confused with all the math. But then they will just need to go back and re-read and they will catch on. I learned some new stuff about sketchup here as far as right clicking to get entity, highlighting multiple lines and spaces to come up with a length/area., and much more. Thanks buddy.

Pioneer~Saturn
06-25-2009, 12:02 AM
No prob :) I do what I can

Pioneer~Saturn
09-10-2009, 12:35 AM
Chyea

RJesus
10-01-2009, 04:59 PM
why isn't this stickied?

ngsm13
10-01-2009, 06:54 PM
There already is one, that's simpler.

nG

dappa5
10-01-2009, 08:54 PM
This should be sticky.


it is look ^^^^ there thanx NG

but thanx Saturn for taking the time

dappa5
10-01-2009, 08:55 PM
There already is one, that's simpler.

nG


lol i didnt even read all the way to the end lol

Pioneer~Saturn
10-01-2009, 10:20 PM
yea, 2 different ways of doing it I guess but with this info you can go off and make all sorts of ported setups accurately as long as you dont mind a little math

tinmanchris217
10-04-2009, 07:12 PM
I prefer this method, but use the12volt's port calculator.

SketchUp is quick and easy for those comfortable with CAD. It really does take the guess work out of more complicated enclosures too.

Bump for a good explanation, and a guy know knows how to build proper boxes.

Pioneer~Saturn
12-29-2009, 04:37 AM
Thanks man, much appreciated :)

snoopdan
12-29-2009, 09:29 AM
I just use pen and paper :confused:

Pioneer~Saturn
12-29-2009, 11:29 AM
Yea, that can be used but its much faster on the comp with sketchup and the copying and pasting for the calcs helps a good bit (but a graphing calc would be helpful too if its on paper)

bassman3
12-29-2009, 04:00 PM
Good write up tutorial Saturn... I was actually meaning on creating something like this, but good job :)

to other members and people wanting to learn how to design enclosures, there are ALOT of ways you can go about designing an enclosure. This is definently one of them. BUT, if you did not want to use RE's calculator, another way is to go about doing this is using the12volt.com and using both the port length calculator (for finding the port length) and using the "volume calculator" to mess around with the dimensions you need (make it a a little bigger to account for sub and port disp.) and use those dimensions + the port length number to draw up your own box. Once you get the hang of it, it's very simple. Just another way :)

Nice thread Saturn.