Question regarding the Maelstrom-X II

Hi,

I have just ordered a Maelstrom-X II and I need to build a sealed enclosure. I am trying to determine the right volume for the box. I have used some of the available software but I still need some help. I have 3 basic questions:

1. Is 4 cubic feet the smallest acceptable enclosure? I noticed that by going up in volume to around 7 cubic feet the Qtc goes down to 0.59.

2. I will probably have to add the driver's and the bracing's volume into that, so have you got any idea what the driver's volume is? (4.5 lt?)

3. Filling the cabinet with some material might be an option. How do I choose the correct type and amount?

Thanks in advance...

The 4 cuft yields a Qtc of 0.7. I was under the impression that lower Qtcs were better for music. (I do not even know what I am talking about really )