Building New Box???

 

New member
Username: Tom_k

Post Number: 2
Registered: Jul-04
Hi,I got a 12WO,in a box I made out of 1/2" wood at max,from a old entertainment center. Its about 1.8 cubic feet internal. Im thinking about making a new box out of 3/4 MDF,around 1.4 Would it sound alot better, Because Im kinda impressed with it in the box its in? But If I could get even BETTER sound?? Thanks.
 

Silver Member
Username: Davids2004

Houston, TX USA

Post Number: 559
Registered: Jun-04
What is the recommend size for that sub?
 

New member
Username: Tom_k

Post Number: 3
Registered: Jul-04
1-1.7. Thanks
 

Silver Member
Username: Davids2004

Houston, TX USA

Post Number: 560
Registered: Jun-04
I would proably give each sub about 1.4.

These are outside dimensions
15.5-deep
14.5-tall
29.5-wide

Internal dimensions
14-deep
13-tall
28-wide

This is how I got it

14*13*28/1728

5096/1728

2.95-.14(drive disp)
2.81-after disp/2

1.405=1.41

Good luck.



 

Silver Member
Username: Iamduff_87

Michigan America!

Post Number: 199
Registered: May-04
ok i am trying to get into building a box. why did you divide the area by 1728? the rest i believe i do understand.
 

Silver Member
Username: Iamduff_87

Michigan America!

Post Number: 200
Registered: May-04
also he only has 1 sub so wouldnt he divide the width by 2 to have a width of about 15.5?
 

Anonymous
 
Yea,I knew how to do that too,but I now dont. Whats the .5 for? Thickness of the wood I think? Im confused on how you take the first dimensions off the internal,thanks.
 

Silver Member
Username: Davids2004

Houston, TX USA

Post Number: 562
Registered: Jun-04
Well the reason You get the .5 is becuase the internal dimensions when made out of 3/4 material you have to add an extra 1.5 on top of the internal dimensions to get outside dimensions to take the place of the wood displacement.

The reason you divide by 1728 is becuase that is the number you get for a cu ft.

12*12*12=1728
 

Bronze Member
Username: Insearchofbass

Post Number: 74
Registered: Jun-04
just for the record if you build a smaller box you will probably gain spl but lose some lower frequencies you used to be able to play in the bigger box.

thanks,

in search of bass
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