Hello everyone,
I would like to put out a few questions regarding the scaling of horns / waveguides. I assume it would be nice and interesting to hear the comments and opinions of the learned forum members on this topic. The main questions would be:
1) Are horns scalable? If yes, then which types are and to what extent?
2) Is it possible to scale a horn along certain directions only? For example, the width and height change with depth remaining the same.
3) How are the characteristics such as cutoff frequency, directivity, frequency response etc. of a scaled horn related to those of the original?
4) What would be the advantages / disadvantages, if any, of horn scaling? Is it worthwhile scaling an existing design ?
I am quite sure that at least some of you have thought about / tried similar things. It would be nice to know the results from such attempts in particular. Thanks.
I would like to put out a few questions regarding the scaling of horns / waveguides. I assume it would be nice and interesting to hear the comments and opinions of the learned forum members on this topic. The main questions would be:
1) Are horns scalable? If yes, then which types are and to what extent?
2) Is it possible to scale a horn along certain directions only? For example, the width and height change with depth remaining the same.
3) How are the characteristics such as cutoff frequency, directivity, frequency response etc. of a scaled horn related to those of the original?
4) What would be the advantages / disadvantages, if any, of horn scaling? Is it worthwhile scaling an existing design ?
I am quite sure that at least some of you have thought about / tried similar things. It would be nice to know the results from such attempts in particular. Thanks.
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The Resize Wizard in Hornresp should give you the answers to your questions.
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In other words, yes horns and waveguides are scalable....good to know...guess I can turn the HVDiff from 170hz to 350hz after all =)
Yes Sir, I do have a copy of your program on my computer and have checked the re-size option you have mentioned. I find the cutoff frequency ratio to be inversely proportional to the scaling factor. The frequency response also seems to shift and scale appropriately. This may also be possibly extended to horns of other shapes as well.
However, I still don't seem to understand how the scaling of the mouth (only) of a rectangular horn affects its beamwidth and directivity. E.g. If the JBL 2380A is usable upto 500Hz, its 2x version should work well upto 250Hz. But what happens if one scales the horn only along the mouth (x & y axes) without changing the depth? By how much do the other properties change?
Thanks.
That is beyond the scope of Hornresp. You would need to use something like AKABAK.
Yes, I have AKABAK (ABEC3) as well but unable to solve anything else other than the Horn400 (from examples), because of CPU incapability. Hence the questions regarding adjustments to existing horn designs.
Thank you for your responses. Sounds like it's high time I get a new computer.
Thank you for your responses. Sounds like it's high time I get a new computer.