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omnnidirectional synergy horn?
omnnidirectional synergy horn?
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Old 12th April 2019, 08:30 PM   #41
Slothrop is online now Slothrop  United States
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Quote:
Originally Posted by bwaslo View Post
I was thinking a few years back about how easy it might be to make a Unity "Smith" horn...
I'm not familiar with the "Smith" horn. Do you have a link to some info?
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Originally Posted by bwaslo View Post
The one I made sounded pretty good until it got at all close to any wall...
This is my experience as well. Fortunately I have plenty of space in my living room to keep them away from the walls.
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Old 12th April 2019, 08:43 PM   #42
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Originally Posted by KCHANG View Post
... you can design and build 8 mini-synergy horns each with 90-degree horizontal coverage, and combine 4 of them as one channel. You can even combine the 4 mini-synergy horns into one unitary structure, and 3D-print that structure.
Yes, that might work. I would like to avoid buying eight tweeters and however many mids and woofers, though. Part of the fun (for me anyway) of doing all this is the challenge of making it work within my constraints.
Thanks again for your input; it's really helpful to get feedback, even if I don't follow every recommendation.
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Old 12th April 2019, 10:50 PM   #43
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omnnidirectional synergy horn?
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Originally Posted by Slothrop View Post
I'm not familiar with the "Smith" horn. Do you have a link to some info?
Here is one...
Reconstructed Smith Horn Plans
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Old 13th April 2019, 12:51 AM   #44
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Originally Posted by bwaslo View Post
(possibly an ignorant assumption?)
Dunning-Kruger is always an option.

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Originally Posted by KCHANG View Post
After thinking for a while about what you want to achieve, it occurred to me that the real synergy horns are designed to do exactly that. If you put the synergy horns in a ring, you'll get 360 degree (i.e., omnidirectional) sound with also well-controlled angular distribution in the vertical direction.
This is an excellent point, but the combined speaker would be massively larger than the OP's idea. Isn't that the fundamental compromise with all horns?
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Old 13th April 2019, 03:22 AM   #45
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Originally Posted by Slothrop View Post
@KCHANG - Thanks for your reply. The dipole-ness of the tweeters on my earlier speakers is what made me call them ‘half-assed’, i.e. not fully omnidirectional. Still, from 4kHz down they do a pretty good job of sending out 360 degrees of sound. I’ve heard dipoles, and this is not the same. I wish more people could get a chance to hear an omni speaker.
One thing to consider is the potential difference in path length between the inner and outer walls of your radial horn. If they are not equal length the wavefront will exit at an angle. You can adjust path lengths by having different diameters between top and bottom edges of the horn exit.

Omni's are definitely a different listening experience. As noted earlier you need enough room to get them away from the wall (> 1m).

I went through 5 revisions to get mine to a state I was happy with OmniDirectional - work in progress and they are still prototypes. There are lots of design issues in that thread that might help you.
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Old 15th April 2019, 04:13 PM   #46
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DonVK - I'm going through your thread now. Lots of interesting stuff in there that's relevant to what I'm trying to do. Super interesting project! Thanks for the reply.
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Old 15th April 2019, 07:40 PM   #47
Slothrop is online now Slothrop  United States
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Originally Posted by weltersys View Post
1) Yes, only around 15 degrees of dispersion. High frequencies behave pretty much like beams of light, you can trace the reflective rays from the source to visualize the pattern.

2)A 360 x 30 degree horn is not omnidirectional, but if that's what you'd like :^)
I think it probably is what I want; but I also have this detour in progress.
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