How about the sealed box with "variovent"?

[badman]

No easy answers tomato.

There's no 3dB loss of sealed WRT ported. That's a fallacy, the ported alignments add output around the tuning, but that's not 3dB added to the reference efficiency which is how it's often described.

How it influences the box size depends upon the driver/box combo, there's no simplification that can be applied.

[TomatoBangBang]

Originally posted by badman
No easy answers tomato.

There's no 3dB loss of sealed WRT ported. That's a fallacy, the ported alignments add output around the tuning, but that's not 3dB added to the reference efficiency which is how it's often described.

Oh great to know, i thought that the sealed configuration makes a loss of 3dB of the "factory" effeciency of the driver

So if the effeciency of a driver is 97dB (on correct specs) it will stay 97dB in a sealed enclosure
In fact if i understand you it is the ported enclosure that improve the output only on a frequency range


How it influences the box size depends upon the driver/box combo, there's no simplification that can be applied.


Well there is still physical laws as O_cool's reference to Hoffmann's iron law that i discover not that far

i mean what should i expect ?