Random Theory Question

[99Wolfsburg2.0]

I'm been thinking about this for some time and I'm looking to you guys for some opinions or answers. If a sub was put in a sealed box and then there was a box attached the the face side of that box what would happen? Basically it would be like a bandpass box but the bandpass part wouldn't have any ports so it would be a sub with two sealed boxes built around it.
What would this sound like?
Would it damage the sub?
What you guys think....it ever been tried?

[JimJ]

Basically, you're sealing the sub inside an airtight box.

It's going to sound like ****...you're isolating both the front and back waves - the sub has to work against an "air spring" going both ways.

You need an opening somewhere

[99Wolfsburg2.0]

thats what i thought...thanks

[req]

yep. imaging putting your stereo in a room.

then walking outisde it and closing the door

thats one way to guess how the SPL would be
but you CAN build a horn box, where the cone is sealed, and the rear part is a huge port. kinda cool.