Thanks Bryan. This is great info.
A few more questions:
1. You're mentioning to strecth tight if I use plastic. Is that important? I just filled a couple of "pillows" with rockwool. I used some plastic bags from the grocery store around the rockwool, but didn't care about strecthing it tight.
2. For the tritrap; Will I loose any effectiveness when using some thin timber on the sides? I need to get some sturdiouness so I can move it around.
3. I see some are saying that for a tritrap and for best bassabsorption, it's an advantage that the material one is using is not too dense. That lower gas flow resistance will actually give a better result. Is that true? We don't have 703's here in Norway (to my knowledge), but there are different kinds of both fiberglass and rockwool.
