check box specs

[tRiGgEr 5,000+ posts]

Use your brain.

Subtract all displacment from the box size. It is that easy. If you need a bigger box increase the dimmensions. It's not really rocket science.

 

[the_flatlander 10+ year member]

ok now if this one isn't right I'm gonna //content.invisioncic.com/y282845/emoticons/wallbash.gif.1310150c49dd52e0fbe1813a0681e5c3.gif now we got port area=45^2 internal vol=3.5^3 tuning frequency=28hz //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif :uhoh:

went over math again and I think internal depth should be 20" and port wall 1 should be 17" and port wall 2 should be 15.6"

 

[the_flatlander 10+ year member]

I really hope I got it this time

 

[the_flatlander 10+ year member]

could someone plz tell me if I finaly got one right so I can go and build the **** thing today on my snowday

 

[swimfreak26 10+ year member]

Almost there //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

If you have the internal depth to be 20, like you mentioned (but wasn't in the pic) then you're looking at right around 3.5 cubes at 28Hz (a little less, like 3.45ish, no biggie). That's with EXTERNAL dimensions being 21.5 x 31 x 15.

The only other issue I saw with it is that your port area is wrong...it's really 40.5 square inches because you have to account for wood on the top and bottom (3 x 13.5).

I didn't check the port walls, but I assume they're correct as long as you get a port length of 34.5" which is what I am getting.

 

[the_flatlander 10+ year member]

how deep would it have to be to make the length 31" external this shit is putting knots in my brain

would 29.5*19.5*13.5 work?

 

[swimfreak26 10+ year member]

umm, it is 31?

 

[swimfreak26 10+ year member]

would 29.5*19.5*13.5 work?

This is 3.5 cubes before any displacement.

 

[the_flatlander 10+ year member]

I got 4.5^3 before any displacement

 

[the_flatlander 10+ year member]

Almost there //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
If you have the internal depth to be 20, like you mentioned (but wasn't in the pic) then you're looking at right around 3.5 cubes at 28Hz (a little less, like 3.45ish, no biggie). That's with EXTERNAL dimensions being 21.5 x 31 x 15.

The only other issue I saw with it is that your port area is wrong...it's really 40.5 square inches because you have to account for wood on the top and bottom (3 x 13.5).

I didn't check the port walls, but I assume they're correct as long as you get a port length of 34.5" which is what I am getting.

oh I get it I think I just got all screwed up because you but the 21.5 before the 31 in the dimensions //content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif

 

[the_flatlander 10+ year member]

so how does this sound for dimensions to cut

2- 31X21.5

2- 20X13.5

1- 29.5X13.5

1- 26.5X13.5

1- 16.25X13.5

1- 11.5X13.5

 

[the_flatlander 10+ year member]

anybody? plz help