enclosure design, need some checking

[paulie 10+ year member]

hi, working on building a box for one 13Ov.2. Tempe helped me with the design, but i had to draw it out, cuz i have to see it before i build it. just wanted to check and make sure everything looks right....its a crappy paint drawing, i know, but thats all i could get to work right.

http://h1.ripway.com/Bobby_7/BOX2.JPG

oh yea, it is supposed to be 2 cubes tuned to 32Hz. in WinISD, im getting that with that setup it would be tuned to like 35Hz, but i know WinISD sux compared to others and Tempe is probably right.

Click to read more...

 

[paulie 10+ year member]

bump.........anybody.......?

 

[Beat_Dominator 5,000+ posts]

In the drawing, outside on inside dimensions? If outside...wood thickness =?

 

[Beat_Dominator 5,000+ posts]

I got almost 3.0 cubes....

 

[Beat_Dominator 5,000+ posts]

Subtract the sub displacement and it's still too big.

 

[paulie 10+ year member]

all dimensions are exterior. i am getting 2.4 cubes, then i figure with the displacement of the sub and the port, it will be about 2.2 cubes. i guess it really dont matter if it is exactly 2 cubes, but either way, will this box work well? i like the design of the box really well, but should i subract like an inch somewhere to make the box a bit smaller? i could kinda go for subtracting an inch on the height, cuz my max height is a little over 15...

 

[Beat_Dominator 5,000+ posts]

If you take an inch off the top, making it 14x15x25 I get about 2.06 cubes. Tuning is 30.9 hz. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif pretty close......if it is indeed 3/4" MDF.

 

[Beat_Dominator 5,000+ posts]

^ that's with port disp. but not sub disp.

 

[paulie 10+ year member]

sorry, i forgot to tell ya it will be 3/4" MDF. so if i made it 14x15x25 with a 22.75" port, it would be 1.97ft^3 tuned to 30.9Hz? (that is including .09ft^3 displacement of the sub). just wanting to make sure i understand it all. i put it into WinISD and with that box i get a tuning of like 34Hz and with the 15x15x25 box i get 33.37Hz, but thats WinISD...

 

[Beat_Dominator 5,000+ posts]

WinISD and Bass Box pro are a little off on tuning measurements.