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In the Forum: Horn-Loaded Speakers
In the Thread: The absolutely “best” material for horns construction.
Post Subject: Molds are not scalable for different flare rates.Posted by JLH on: 6/27/2009
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decoud wrote: |
Yes, I should have said modular like your bass horns, but with much smaller segments, e.g. 36 segments of 10 degrees. Assuming one keeps the profile the same, the only difference between different sized horns is scale, so a single mould "capped" at variable lengths could be used to make a large range of horns. But I suppose it would not work if, like in your case, one needed to change the profile to suit other imperatives. (Though at 40Hz presumably one would have to start thinking about changing the house....)
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Not to be pessimistic, but I have already visited this idea and it does not work. The problem with trying to “scale” sectioned panels is the amount of curvature in the panel sets the flare rate. Therefore, the flare rate is not “scalable”. The only way to change the flare rate is to change the number of sections. This in turn will change the angle of the mating surfaces along the edge. This then in turn requires a different mold for each flare rate. It is a no win situation.
Rgs, JLH
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