how do I figure out airspace???

yellowmini03 · 07-25-2008, 06:54 PM

I was wanting to build a custom box for the cab and am confused on how to figure out the correct size. anyhelp would be great thanks.

sdime98 · 07-25-2008, 06:56 PM

http://www.bcae1.com/spboxnew2.htm

AVNCHRIS · 07-25-2008, 07:37 PM

welcome

and just punch in the numbers of ur box
http://www.the12volt.com/caraudio/boxcalcs.asp

sdime98 · 07-25-2008, 07:43 PM

i find it funny, you rep kicker in your user title, but don't have anything kicker in your truck?

AVNCHRIS · 07-25-2008, 08:46 PM

Quote: Originally Posted by sdime98

i find it funny, you rep kicker in your user title, but don't have anything kicker in your truck?

haha use too..
soo..ya..

Big_Bake · 07-25-2008, 09:05 PM

geometry? formula for volume is:

length x width x height

don't forget to compensate for material thickness and displacement of the sub itself. or you could do it the easy way and use an online box calculator.

PandaS10 · 07-26-2008, 12:19 AM

Quote: Originally Posted by Big_Bake

geometry? formula for volume is:

length x width x height

don't forget to compensate for material thickness and displacement of the sub itself. or you could do it the easy way and use an online box calculator.

that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness.

01cherryreds10 · 07-26-2008, 04:48 PM

Totally just added that site to my favorites. The RF site is okay but half the time is down for some reason.

Oh wait, it's RF, nevermind.

timtp2004 · 07-26-2008, 05:30 PM

lol thats the one I use from time to time cuz I cant ever remember the other ones when I need too

Tuteuk · 07-26-2008, 05:46 PM

Bass Box pro.....is your friend

skinnyg · 07-26-2008, 06:20 PM

Quote: Originally Posted by 97dimedrop

that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness.

or use basic geometry that you should have learned in 9th grade, jesus christ, wtf would you guys do if there wasnt internet or computer programs? This is why America is getting dumber. But I use those sometimes too haha

Big_Bake · 07-26-2008, 08:24 PM

Quote: Originally Posted by 97dimedrop

that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness.

ok well a wedge is just a triangle right?

area of a triangle:

1/2 x length x width (cause two triangles equals a rectangle)

then just multiply that by the depth and you get volume

area of a circle:

πr2

and just multiply that by your depth again to get volume of a cylinder

and for odd shaped just take a profile and divide it into simple shapes like a rectangle and a triangle. find the respective volumes and add them together. for odd things such as fiberglass boxes you just need to get a material to displace the interior space and measure it that way. example is fill it with packing peanuts. dump those out into a box and measure the depth. do your simple geometry and you have and idea of the airspace.

i'm not knocking computer programs, but you NEED to know what the program is actually doing for you. i took geometry in 8th grade and now i'm going into my second year of college. it's one of the few math courses that i can consistently use. wish i could say the same about calculus

edit - the squared didn't come out right. area of a circle should read "pi times radius squared"

skinnyg · 07-26-2008, 08:50 PM

i use progams too, saves time but it isnt hard, HxWxD in inches divide it by 1728, if you have a wedge you just add the 2 sides together and divide by 2 (average), it isnt that hard

PandaS10 · 07-26-2008, 09:24 PM

i too know those formulas. i can do advanced geometry and trig, but when i'm designing, those programs are easy as ****. plus, i was pointing out that the formula big bake gave, was only for cube shapes.

Big_Bake · 07-27-2008, 04:39 AM

haha i'm not picking on you guys. programs that do shit for you is so nice. i just like working things out on paper to make it feel like i'm more involved in building a box,

and F trig in A. i hated having to know all those inverses and shit.

yellowmini03 · 07-27-2008, 07:40 PM

Thanks for the links... Whenever i get around to building it I let you know

07-25-2008, 06:54 PM	#1
yellowmini03 Registered User Join Date: Mar 2008 Posts: 4 Location: User is: OffLine	how do I figure out airspace??? I was wanting to build a custom box for the cab and am confused on how to figure out the correct size. anyhelp would be great thanks.
	[Reply w/Quote]

07-25-2008, 06:56 PM	#2
sdime98 Carolina S-Series Mod. Age: 23 Join Date: Feb 2003 Posts: 46,595 Location: Laurel Hill, NC User is: OffLine	Re: how do I figure out airspace??? http://www.bcae1.com/spboxnew2.htm
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07-25-2008, 07:37 PM	#3
AVNCHRIS ↓ Ms.No-Name Join Date: Oct 2007 Posts: 581 Location: Cali User is: OffLine	Re: how do I figure out airspace??? welcome and just punch in the numbers of ur box http://www.the12volt.com/caraudio/boxcalcs.asp
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07-25-2008, 07:43 PM	#4
sdime98 Carolina S-Series Mod. Age: 23 Join Date: Feb 2003 Posts: 46,595 Location: Laurel Hill, NC User is: OffLine	Re: how do I figure out airspace??? i find it funny, you rep kicker in your user title, but don't have anything kicker in your truck?
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07-25-2008, 08:46 PM	#5
AVNCHRIS ↓ Ms.No-Name Join Date: Oct 2007 Posts: 581 Location: Cali User is: OffLine	Re: how do I figure out airspace??? Quote: Originally Posted by sdime98 i find it funny, you rep kicker in your user title, but don't have anything kicker in your truck? haha use too.. soo..ya..
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07-25-2008, 09:05 PM	#6
Big_Bake dropt Age: 19 Join Date: Apr 2007 Posts: 1,746 Location: Norfolk, VA User is: OffLine	Re: how do I figure out airspace??? geometry? formula for volume is: length x width x height don't forget to compensate for material thickness and displacement of the sub itself. or you could do it the easy way and use an online box calculator.
	[Reply w/Quote]

07-26-2008, 12:19 AM	#7
PandaS10 Panda s10 driving mofo. Age: 19 Join Date: Aug 2007 Posts: 1,582 Location: Birmingham/Anniston Al. User is: OffLine	Re: how do I figure out airspace??? Quote: Originally Posted by Big_Bake geometry? formula for volume is: length x width x height don't forget to compensate for material thickness and displacement of the sub itself. or you could do it the easy way and use an online box calculator. that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness.
	[Reply w/Quote]

07-26-2008, 04:48 PM	#8
01cherryreds10 Wanna see some magic? Age: 18 Join Date: Jan 2007 Posts: 3,830 Location: Illinois User is: OffLine	Re: how do I figure out airspace??? Totally just added that site to my favorites. The RF site is okay but half the time is down for some reason. Oh wait, it's RF, nevermind.
	[Reply w/Quote]

07-26-2008, 05:30 PM	#9
timtp2004 TTP Age: 23 Join Date: Jun 2006 Posts: 789 Location: Colorado User is: OffLine	Re: how do I figure out airspace??? lol thats the one I use from time to time cuz I cant ever remember the other ones when I need too
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07-26-2008, 05:46 PM	#10
Tuteuk Bovine on NOS!! Age: 44 Join Date: Feb 2007 Posts: 1,058 Location: London, Ontario, CANADA User is: OffLine	Re: how do I figure out airspace??? Bass Box pro.....is your friend
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07-26-2008, 06:20 PM	#11
skinnyg Registered User Age: 28 Join Date: Jun 2005 Posts: 2,715 Location: Hagerstown, MD User is: OffLine	Re: how do I figure out airspace??? Quote: Originally Posted by 97dimedrop that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness. or use basic geometry that you should have learned in 9th grade, jesus christ, wtf would you guys do if there wasnt internet or computer programs? This is why America is getting dumber. But I use those sometimes too haha
	[Reply w/Quote]

07-26-2008, 08:24 PM	#12
Big_Bake dropt Age: 19 Join Date: Apr 2007 Posts: 1,746 Location: Norfolk, VA User is: OffLine	Re: how do I figure out airspace??? Quote: Originally Posted by 97dimedrop that formula only works for common cube shaped enclosures, not wedges, cylinders, or other odd shapes... use the link avnchris posted, its the shit, i use it for every box i build, and it automatically componsates for enclosure thickness. ok well a wedge is just a triangle right? area of a triangle: 1/2 x length x width (cause two triangles equals a rectangle) then just multiply that by the depth and you get volume area of a circle: πr2 and just multiply that by your depth again to get volume of a cylinder and for odd shaped just take a profile and divide it into simple shapes like a rectangle and a triangle. find the respective volumes and add them together. for odd things such as fiberglass boxes you just need to get a material to displace the interior space and measure it that way. example is fill it with packing peanuts. dump those out into a box and measure the depth. do your simple geometry and you have and idea of the airspace. i'm not knocking computer programs, but you NEED to know what the program is actually doing for you. i took geometry in 8th grade and now i'm going into my second year of college. it's one of the few math courses that i can consistently use. wish i could say the same about calculus edit - the squared didn't come out right. area of a circle should read "pi times radius squared" Last edited by Big_Bake : 07-26-2008 at 08:25 PM.
	[Reply w/Quote]

07-26-2008, 08:50 PM	#13
skinnyg Registered User Age: 28 Join Date: Jun 2005 Posts: 2,715 Location: Hagerstown, MD User is: OffLine	Re: how do I figure out airspace??? i use progams too, saves time but it isnt hard, HxWxD in inches divide it by 1728, if you have a wedge you just add the 2 sides together and divide by 2 (average), it isnt that hard
	[Reply w/Quote]

07-26-2008, 09:24 PM	#14
PandaS10 Panda s10 driving mofo. Age: 19 Join Date: Aug 2007 Posts: 1,582 Location: Birmingham/Anniston Al. User is: OffLine	Re: how do I figure out airspace??? i too know those formulas. i can do advanced geometry and trig, but when i'm designing, those programs are easy as ****. plus, i was pointing out that the formula big bake gave, was only for cube shapes.
	[Reply w/Quote]

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07-27-2008, 04:39 AM	#15
Big_Bake dropt Age: 19 Join Date: Apr 2007 Posts: 1,746 Location: Norfolk, VA User is: OffLine	Re: how do I figure out airspace??? haha i'm not picking on you guys. programs that do shit for you is so nice. i just like working things out on paper to make it feel like i'm more involved in building a box, and F trig in A. i hated having to know all those inverses and shit.
	[Reply w/Quote]

07-27-2008, 07:40 PM	#16
yellowmini03 Registered User Join Date: Mar 2008 Posts: 4 Location: User is: OffLine	Re: how do I figure out airspace??? Thanks for the links... Whenever i get around to building it I let you know
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