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In the Forum: Horn-Loaded Speakers
In the Thread: How to USE “Resonating Oops” in loudspeakers
Post Subject: The “Oops-resonator” is quite complex Posted by Romy the Cat on: 3/6/2007

 jessie.dazzle wrote:
Have you considered replacing the cover on the tail of your Upper-Bass horn?

...With a large-diameter circular cover, made from a more resonant material (when I say large diameter, I mean quite a bit larger than the diameter of the rear chamber)?
Well, it is hard to explain but to use the “Oops” I the way how I would like is NOT suitable with back-chamber of a horn. BTW, for a proper “Oops-operation” the design should be relatively narrow bandwidth. The problem with using of the back-chamber’s lid is that it is very small. It is not the “resonant material” that I am after but the way how the “resonant material” is USED. This “usage” requires a LOT of volume (for instance 5 cub feet, depends form the “Oops-volume” that I need to produce). Obviously a 5 cub feet back chamber on the 100Hz horn will not be a back chamber anymore but rather an open air chamber and the excursion of the horn drive will not be able to pressure that large chamber. So, I do not see hot the back chamber might be used… unless it will be an…. active pressure magnifier. How different would it be from another defalcated channel loaded to the “Oops-resonator”? Anyhow, it becomes quite complex as I need to deal with unnecessary sound that the “Oops-resonator” creates in case a separate chamber would be used.…. Here is juts a conceptual idea how it "might" be done with the back chamber.

Oops-resonator.JPG

The caT

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