How would carpeting a box cause the box to not be air tight? If anything it might seal up any tiny air leaks by wrapping the carpet around it. And are you saying that if the enclosure isn't sitting flat it won't be air tight?
i think what he means is, that the carpeting will HELP form the seal for the sub.. insulation is essentially air pockets joined together.
You asked what air-tightness was. There must be a miscommunication between our posts. I believe OP is saying will adding carpet help in any way shape or form with air leaks?
From first post: "I'm, having a box built right now, already paid extra for carpeting, but how can the sub maintain airtightness if it isn't on a flat surface like bare birch/mdf/etc?"
I was just wondering if the fabric would facilitate leakage via air passing through the very small gaps between the rubber mounting section of the subwoofer (part you screw into the box) and the wood. Because my last setup was just sub on wood (no porous carpet in-between) and that was about as sealed as I could get, so I was worried the fabric would cause said seal to have a slight but sub optimal leakage. I thought it was a pretty good question, I'm usually the first to say something like "are you serious" when someone asks a seriously dumb question but it's a shame that someone with such a strong site-presence reacted in such a way in this case. (not referring to you, whoever I quoted)
Haha fair enough... I just thought y'all knew what I was talking about because it really was a very simple question, but when I realized nobody knew what I was talking about I rephrased it with as much detail as possible. Maybe I worded it pretty dismally thie first time Sorry... So y'all really don't think the carpet will make a difference especially with SQ as long as the sub is screwed down tightly? I use an SA-15 and 1200wrms before rise I thought it was not out of the question to assume there could be some leakage with a porous piece of fabric bridging the gap between sub and box
