Sealed Vs. Isobaric Volume

[Jonahdude 10+ year member]

If you have a single sealed box at the recommended volume for a specific subwoofer, can you just install another sub on top of it and wire it backwards, or should you increase the box volume?

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[jellyfish420 10+ year member]

you have to half the volume for isobaric.

 

[Jonahdude 10+ year member]

So... a sub with a recommended box volume of 0.5 ft^3 would only need 0.25 ft^3? That doesn't make sense to me... someone please explain.

 

[Jonahdude 10+ year member]

So, if I'm not mistaken, with a sealed enclosure the recommended size for one sub you could use four subs like this?

 

[Jonahdude 10+ year member]

TTT before I go to bed...

 

[Exaran 10+ year member]

So, if I'm not mistaken, with a sealed enclosure the recommended size for one sub you could use four subs like this?

You are not mistaken

 

[Jonahdude 10+ year member]

Also, if I'm not mistaken, giving them each the same power you gave that one sub would result in the same output as 2 subs in a box four times as big?

 

[helotaxi 5,000+ posts]

Four subs in two iso-pairs in a box the size required for one of the subs getting four times the power of one would provide the same output as a pair of subs in a box twice as big. Iso loading a pair of subs doubles the Mms and halves the Vas. The doubling of the moving mass halves the efficiency. Treat each pair as a single sub with half the Vas and twice the Mms and twice the thermal power handling.

 

[Jonahdude 10+ year member]

Four subs in two iso-pairs in a box the size required for one of the subs getting four times the power of one would provide the same output as a pair of subs in a box twice as big. Iso loading a pair of subs doubles the Mms and halves the Vas. The doubling of the moving mass halves the efficiency. Treat each pair as a single sub with half the Vas and twice the Mms and twice the thermal power handling.

Thanks, that answered my question. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif