Actually the side view isn't right.
The compression drivers would almost meet at the throat of the horns. facing each other. Don't know if that would have some ill effects?
The compression drivers would almost meet at the throat of the horns. facing each other. Don't know if that would have some ill effects?
As I see it, it has the same flaw as the Duevel. Its just a up firing speaker with some more or less uncontrolled early reflections.
"uncontrolled"? What do You mean by an uncontrolled reflection vs a controlled reflection?
I use up firing full range but without reflector or guide. I eq to more or less flat in room response. This works great for me. It's not based on CD, but sound does not change much, and presents a uniform sound no mater whare I am.
You can arrange Unity horns in a ring
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Beolab 90 can radiate omnidirectionally, or it can radiate into a narrow beam
An externally hosted image should be here but it was not working when we last tested it.
Beolab 5 has a wide beamwidth
Having said all that, it's quite hard to beat the cornerhorn approach promoted by Cask05. I've heard the Beolab 90s and the Beolab 5 and the MBL speakers. The corner horns I'm using, designed by Bill Waslo, are right up there.
The Beolab 5 is clever though. It doesn't look like a waveguide speaker, but it is, the waveguides are basically pointed UP instead of forward and there's a reflector at the throat.
I think we so often overlook the advantageous sound a room can provide......it’s the ambient field that can make imaging so breathtaking........or a catastrophe. In Walls and corner speakers eliminate those spacial effects.......so IME a very clinical detailed presentation........and equally dull and lifeless.
I’m always looking to surpass my narrow 4” wide floorstanders and subs placed 4 ft out into the room and have not been able to do so. The only drawback is limited dynamics with conventional dome tweeters and 3.5” fullrangers suffer from power compression on dynamic peaks.
I’m always looking to surpass my narrow 4” wide floorstanders and subs placed 4 ft out into the room and have not been able to do so. The only drawback is limited dynamics with conventional dome tweeters and 3.5” fullrangers suffer from power compression on dynamic peaks.
Measurements for a typical omni with reflectors
SoundStage! Measurements - Mirage OMNI 60 Loudspeakers (6/2003)
SoundStage! Measurements - Mirage OMNI 60 Loudspeakers (6/2003)
I've never seen one, but building a 360 deg Smith horn would not be too hard. Of course the Smith is said to rely on diffraction - but they don't sound bad.
What if you made it out of conical horns instead of exponential horns?
How would one make the transition from throat to horns? It has a bend of 90 degrees at that point.
A few years ago I saw a patent for a cylindrical omni AMT driver.
Looked like a killer design. A quick search of this site tuned up nothing. Anyone remember?
Looked like a killer design. A quick search of this site tuned up nothing. Anyone remember?
This looks like a very interesting omnidirectional speaker - very unconventional: 34c9 a MDD full range speakers.
I am just bulding my own as these look like a perfect match for my small working room, which is kind of reflective with brick walls, drywall partly sloped ceiling and laminate floor.
I am just bulding my own as these look like a perfect match for my small working room, which is kind of reflective with brick walls, drywall partly sloped ceiling and laminate floor.
An externally hosted image should be here but it was not working when we last tested it.
The Beolab5 gets pretty darn close, because those platters allow for very tight vertical spacing. With 3D printing, you could probably get the vertical spacing down to about ten centimeters. With a crossover point of 1870 and the correct filters, that will give you omni radiation on the horizontal axis and seventy degrees of beamwidth on the vertical.
It basically creates an adjustable beam on the vertical, which is determined by the crossover points and slopes, and an omni beam on the horizontal.
There IS some rejection to the back, due to the conical baffle. So technically, it's like a cardioid on the horizontal and controlled directivity on the vertical.
How predictable is the “waveguide” on these things? Does it follow a certain mathematical shape? I remember you made a 360 degree paraline (YouTube). Have you ditched that idea? If so, how come?
The shape is likely to be optimized with a finite element analysis. It is based on an ellipsoid with the dome tweeter in one of its focal points. Out of reach for most DIY people unfortunately. 🙁
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