[Blaser]

Hello Friends!

I have read that filling subwoofer walls with an insulation material has for main target to make the enclosure act like a bigger one (enhance LF response). From the other side, I have also read that this helps with wall resonances.

Moreover, there are many types of insulation materials: Fiberglass, Fiberfill, Dacron, open cell foam, closed cell foam.....

Here are some points I would like to discuss:

- How much bigger the enclosure will appear? what's the rule?(related to thickness, wall length?)

- Should the insulation volume be substracted from the effective volume before insulation?

- What if the enclosure is big enough (LLT for ex.), is stuffing mandatory? What about the tuning frequency if the enclosure appears bigger than it is?

- What are the differences between insulation materials? Why use one and not the other type?

- When to apply insulation or not?

If others have questions, they are wellcome to add. Those who have answers are wellcome to educate!!

Thanks.