Help with sonosub volume

[basham]

Can someone here verify my numbers for my sonosubs volume. (math was always my weakest subj.)

16.5" OD
16" ID
20" H
.25" wall thickness
My calculations give me 2.27f^3. Is this right?
Thank you to all that respond. JB

 

[Cal Weldon]

I get 2.33 Cu ft. That is using pi X 64 X 20 divided by 1728.

Is 20" the internal height?

 

[GM]

Greets!

Assuming the 20" height is i.d.:

(((16^2*pi)/4)*20)/1728 = ~2.327105669 ft^3 minus whatever Vb the driver, etc., takes up.

GM

 

[basham]

The actual height of the tube is 22", but the total thickness of the caps are 2" so I am deducting 2 from the height. 20" will be my internal volume. Thank you Cal.

 

[Cal Weldon]

As G.M. has pointed out, you will need deduct the volume of the driver from the box.

...and don't forget to calculate to 9 decimal points.

 

[GM]

Greets!

Yeah, that's the problem with electronic calculators, they don't round off unless you use scientific notation, which flummoxes too many folks to use on most forums.

GM