Silvia Club of NSW
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Stereos - Blue prints or size of box for a 12" sub
https://www.silviansw.com/forum/viewtopic.php?f=11&t=15800		 Page 1 of 1
Author:  U2RNVS [ Wed Apr 27, 2005 8:16 pm ]
Post subject:  Stereos - Blue prints or size of box for a 12" sub
hey fella's

im making a 12" sub enclosure this weekend and was wondering about how to go about this, well all i need is to know how big to make the boz, i have searched the internet and it comes up with all this interior cubic cm bullshit i just wanna know how much MDF i have to buy. how big i should make each side, etc.

all help on how to make a sub box will be very much appreciated

thanks

asher:):):)
Author:  U2RNVS [ Fri Apr 29, 2005 4:35 pm ]
Post subject: 
chimon!!!!

any links for me???

:)
Author:  Magnet [ Fri Apr 29, 2005 7:57 pm ]
Post subject: 
3/4 inch think MDF is the prefered wood. Do you want ported or sealed? It may seem like it is easy to build a box, but to do one proply it takes effort. For ported, you want 1 cubic foot volume, for tight bass. 1.5 cubic foot for normal bass, and 2 cubic foot for deep bass. The port varies to the volume inside the box, not the diplacement of the speaker. For 1.5 cubic foot the port is 3.5 inxh diametre by 7 inch i think, cant remember the other 2.

For sealed...0.5 cubic foot for tight bass, 1 cubic foot for normal bass, and 1.5 cubic foot for deep bass.

Have you considered a drone cone? You have 1 sub and one speaker of the same size without a magnet. Naturally the other speaker compensates for what the sub does and makes very low frequency noises. Very efficent.

People say that it is not good to use cyloclone in the boxes, but it is fine. Just make sure the clone is completly dried. With some subwoofers i think it voids warrenty to use it near the speaker.

I have all the measurements of the boxes which give different cubic feet, and all the port sizes, etc. If you can wait till sunday i can post everything up then.

There are a few different variations of how to construct the box. I would say to use alot of screws if you are going to do sealed as there is alot of pressure inside the box, the litrally collapse if they are not constructed proply. I forgot their name but in the box, where there are 90 degree angles, nail and glue in small long blocks of wood. Seal all of the inside with silicone so you dont get any airleaks. Use pillow stuffing inside the box to add to the sound the box makes and to reduce the airspace inside the box.

Its also good to paint the box, helps any air leaks. The box shouldnt be a cube or rectangualar prism. The vibrations the sub makes will bounce back off the opposite wall and will affect the way it opourates. You want angles. The 45 degree one, anything. Preferably you dont want any 90 degree angles inside the box either. If you were going to do a cube, you times one length by 2, its like cutting it in half corner to corner and screwing it on the side.

But as i said, i can get all measurments to get different cubic feet, what size port for how many cubic feet, etc, etc on sunday
Author:  U2RNVS [ Sat Apr 30, 2005 11:52 am ]
Post subject: 
hey Pig Magnet,
thanks heaps for the reply, it helped me a lot! im making it today i think, but post the stuff up anyway, it will be helpful in the future

thanks

asher:)
Author:  U2RNVS [ Sun May 01, 2005 12:33 pm ]
Post subject: 
turns out that i couldnt make it yesterday, i have a throat infection and i couldnt get out of bed...... so could u plz post up the pics and info when u have the chance, thanks

asher
:):)
Author:  Magnet [ Sun May 01, 2005 4:53 pm ]
Post subject: 
Have you bought a sik habbib subwoofer yet???

I think they come with instructions, may have some prefered dimensions.
Author:  U2RNVS [ Sun May 01, 2005 6:03 pm ]
Post subject: 
SIk SiK siK
yeah i have got the fulli big sub(well its not mine, its my mates, he just doesnt have a user name on this forum..., i'll have a geezer and see if its got anything.

thanks mate
:):)
asher
Author:  Magnet [ Sun May 01, 2005 6:59 pm ]
Post subject: 
Just see if anyone you know has the little booklet thing, mabey someone on here could post em up.

Probly go for about, 500 x 350 x 300...or some variation of that
Author:  eckshale [ Tue May 10, 2005 12:20 am ]
Post subject: 
theres a program that calculates the dimension needed for the prefered volume of air needed for the sub.
BUT
i dont know what its called lol so guess you could try google search for something similar
Author:  SSS610 [ Sun Jan 22, 2006 2:00 am ]
Post subject: 
the program is on the car audio australia car club site

pretty sure thats the name of it

cheers
Author:  ZEi250t [ Sun Jan 22, 2006 8:58 am ]
Post subject: 
honestly, i dont think he cares now. that thread was 9 months old
Author:  Turbo_Brian [ Sun Jan 22, 2006 10:12 am ]
Post subject: 
zei20l wrote:
honestly, i dont think he cares now. that thread was 9 months old


Might be true Zei, but he's not the only person that's interested in this information :wink:

This type of info is very good for anyone looking at swapping Subwoofers, planning on a new system, or who has gotten a new car and looking at stereo systems, demensions, etc.

B.
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