Should this be alright?

[T9X 10+ year member]

I'm working on an enclosure for the pair of Atlas 12"s I've got on the way and I want to have my dimensions checked. I'm going for about 1.3-1.5ft^3 sealed per speaker. The dimensions are -

Height - 14 inches

Width - 30 inches

Length - 16 inches

Total internal volume comes to 2.989ft^3 before displacement or divider. I figure after displacement (I don't know the exact number but I think it's somewhere around .12ft^3) and the .75 MDF dividing the two chamers, I should be right where I want to be.

Also, are there any major advantages/disadvantages to common chamber enclosures? I've never tried one yet and I was considering making this box my first but if there are some noticable disadvantages, I'll spend the extra $1 for the MDF divider. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Click to read more...

 

[AllStar1500bd 5,000+ posts]

Dis - if one sub blows or gets disconnected, you may not be able to tell.

Ad - Save $1

 

[LoudCrownVic 5,000+ posts]

If you wire them parralel and they are brand new drivers right from the start, geting the same power from the same amp...

Screw the divider.

Now if you are running a PA Mofo on one side and a W0 on the other.... Well, a divider would be essential.

 

[T9X 10+ year member]

Now how exactly does the air space per driver formula work? Since it's essentially a 3ft^3 sealed box, is each driver acting as if it was in a 3ft^3 enclosure? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[T9X 10+ year member]

//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[cjjackson85 5,000+ posts]

Now how exactly does the air space per driver formula work? Since it's essentially a 3ft^3 sealed box, is each driver acting as if it was in a 3ft^3 enclosure? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

You n00b.

 

[JimJ 5,000+ posts]

You have to double the airspace if you have two drivers over one.

Remember to take the physical displacement of the drivers into account as well.

 

[T9X 10+ year member]

You n00b.

Word, I am. //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[tRiGgEr 5,000+ posts]

Now how exactly does the air space per driver formula work? Since it's essentially a 3ft^3 sealed box, is each driver acting as if it was in a 3ft^3 enclosure? //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

//content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif No no no, With a comon chamber sealed box of 3ft^3 each driver would see 1.5ft^3.

Not the full amount. Chit I wish that were true. I would have some tiny dual sealed and ported enclosures.

Everything adds up, good job //content.invisioncic.com/y282845/emoticons/thumbsup.gif.3287b36ca96645a13a43aff531f37f02.gif

Only real gain in putting in a divider is for bracing have fun.