Gee, dunno if I even have the terminology right!
What I mean is the type of chamber that is some sort of cone shaped with stuffing.
As far as I can tell, it is designed to absorb as much as possible the backwave of the driver (I am considering it for my mids).
Are there any rules?, design hints, links?
Much more importantly, is it worth the effort over any old chamber for the mid. At a guess would it be fair to say that a lot of the reasons why some prefer OB IS because there is no return of the backwave thru the diaphragm? If that has some truth to it, then it does tend to suggest that it could be an avenue to explore.
I am nearing the end of the construction of my boxes, so little details like this need to be finalised. If I have a few different options to try, then it should not be too hard to do some experiments and see if there is a worthwhile difference.
Hopefully you can decode my poor descriptions and work out what it is I am asking about!
Here is a link to one guys implementation of it, within it you can download a drawing of how he constructed it, basically many layers of mdf with holes in each, which when sandwiched together provide the sculpted out tapering chamber (it also allowed him to fold it back on itself, to save size presumably)
If there are benefits to this type of construction, would he not have gotten better results if he did not use hard reflecting material like mdf? If say he had substituted compressed f/glass with the same cutouts, would he not have gotten an automatic improvement in absorption?
What I mean is the type of chamber that is some sort of cone shaped with stuffing.
As far as I can tell, it is designed to absorb as much as possible the backwave of the driver (I am considering it for my mids).
Are there any rules?, design hints, links?
Much more importantly, is it worth the effort over any old chamber for the mid. At a guess would it be fair to say that a lot of the reasons why some prefer OB IS because there is no return of the backwave thru the diaphragm? If that has some truth to it, then it does tend to suggest that it could be an avenue to explore.
I am nearing the end of the construction of my boxes, so little details like this need to be finalised. If I have a few different options to try, then it should not be too hard to do some experiments and see if there is a worthwhile difference.
Hopefully you can decode my poor descriptions and work out what it is I am asking about!
Here is a link to one guys implementation of it, within it you can download a drawing of how he constructed it, basically many layers of mdf with holes in each, which when sandwiched together provide the sculpted out tapering chamber (it also allowed him to fold it back on itself, to save size presumably)
If there are benefits to this type of construction, would he not have gotten better results if he did not use hard reflecting material like mdf? If say he had substituted compressed f/glass with the same cutouts, would he not have gotten an automatic improvement in absorption?
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