Sealed Vs. Isobaric Volume

[Jonahdude]

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?

[jellyfish420]

you have to half the volume for isobaric.

[Jonahdude]

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]

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

[Jonahdude]

TTT before I go to bed...

[Exaran]

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]

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]

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]

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.