Help with sonosub volume

basham · 7th July 2005, 04:43 PM

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 · 7th July 2005, 04:47 PM

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

Is 20" the internal height?

GM · 7th July 2005, 06:04 PM

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 · 7th July 2005, 06:27 PM

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 · 7th July 2005, 09:05 PM

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 · 7th July 2005, 09:31 PM

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

7th July 2005, 04:43 PM	#1
basham diyAudio Member Join Date: Jul 2005 Location: OK	Help with sonosub volume 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

7th July 2005, 04:47 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	I get 2.33 Cu ft. That is using pi X 64 X 20 divided by 1728. Is 20" the internal height? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

7th July 2005, 06:04 PM	#3
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	Greets! Assuming the 20" height is i.d.: (((16^2pi)/4)20)/1728 = ~2.327105669 ft^3 minus whatever Vb the driver, etc., takes up. GM __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.

7th July 2005, 09:05 PM	#5
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	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. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

7th July 2005, 09:31 PM	#6
GM diyAudio Member Join Date: Jun 2003 Location: Chamblee, Ga.	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 __________________ Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.


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7th July 2005, 06:27 PM	#4
basham diyAudio Member Join Date: Jul 2005 Location: OK	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.

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