Internal volume dimensions

[abbster]

Hi,

I wonder if there are any tests/theories of how the internal dimension ratios influence the enclosure response? I know the external dimensions are important, such as the front baffle in particular of course, but I cant really find any material of how the air reacts internally. (exept that you will have standing waves and might want to seperate the three main)

Im thinking of building a box that has different ratios externally vs internally, thats why Im asking.

Well, Im happy for any suggestions or links or anything!

thanks,

[nigelwright7557]

Originally posted by abbster
Hi,

I wonder if there are any tests/theories of how the internal dimension ratios influence the enclosure response? I know the external dimensions are important, such as the front baffle in particular of course, but I cant really find any material of how the air reacts internally. (exept that you will have standing waves and might want to seperate the three main)

Im thinking of building a box that has different ratios externally vs internally, thats why Im asking.

Well, Im happy for any suggestions or links or anything!

thanks,

Most people get around this with acoustic wadding inside the enclosure.

[Svante]

Yes, there will always be resonance modes ("standing waves") inside a box, regardless of its geometry. The only difference between boxes with different dimensions is the frequencies at which the modes appear.

The way to get rid of the resonance problems is to use stuffing inside the box.