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RE: Aye, cynical I am

Posted by Japesgalore (A) on October 20, 2009 at 11:28:55

In Reply to: RE: Aye, cynical I am posted by Jon Risch on October 20, 2009 at 10:31:04:

Q: Are my chunk style corner traps actually doing some 'serious' trapping? The dimensions again are 2' by 2' by 1.66', in a triangular form.

"A: Depends. What panels or material are you using? How thick is it? Density? Until I know the details. I can't comment."

They are stacked triangles of rockwool which have a denisty of 4.5lb/ft3, they're 4" thick with a total height of 2ft. The hypotenuse of the triangle facing the room is about 2.5ft. As I mentioned before, spacing from the wall, of about 2", has made a major difference. Nothing I've read seems to explain this, quite as I've experienced it. My guess is that if 'speedier' air is allowed to get to all parts of the trap, then the frequencies contained within it are more likely to be affected. This seems to go against the pressured principle and supports the correct use of absorption techniques, which in turn seem to be supported by data proposed by Ethan Winer.

"Yes, I responded to that one, it appears that this individual's DIY tube trap was "broken""

Are the tube traps a more 'risky' venture then? Do the materials and sizes involved have to be precisely tuned for them to work harmoniously with each other, for a given frequency range? Could you elaborate on what ways a tube trap could get 'broken'? I'm actually considering getting a couple of them constructed for the rear corners, for that's the only place that sizeable tubes can go (I think I like my triangles in the front corners - unless you think I can do *a lot* better:). What sort of materials are necessary for 16" tube traps - a link here would be great (although I have been through your website in the past)?

My reasoning for the traps in the rear comes from thing's I've just been reading, namely the info on the tube traps page that has been linked to in this thread. However, in my case, I have a large window covering the width of the wall behind me. I would dearly love to know whether this is a good thing, in terms of bass leakage or whatever (yes I've got very thick - I'd say acoustic - curtains covering the length of it).

"> In most cases, Ethan is wrong. <

Dude, what exactly is your problem? More to the point, let's see some hard proof that I'm wrong. I see all kinds of misinformation in audio forums, and when I post corrections I always explain why it's wrong and then state what is right. Saying someone is wrong with no evidence is a cheap shot."

Oh yeah, and this is precisely the stuff that I was alluding at the start of the thread. You guys DO seem to be coming from different places, yet you both have 'science' backing you up. I've come across threads where you two have had very long debates on this issue. And, frankly, Ethan seems to have less of a bone to pick, at least in terms of the way he writes his posts. This is exactly what's adding to my confusion.

You both are invaluable assets to the community, let me just say that. Now, if you could only just get down to the actual, unequivocal, common-ground science, and overcome your differences, or ego trips, or whatever it is that's hindering the communication process, I'm sure you, me and everyone else that has a vested interest in this topic, would be a lot better off. Just my 2 cents, innit:)

Edits: 10/20/09 10/20/09

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