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Multi-Way Conventional loudspeakers with crossovers

omnnidirectional synergy horn?
omnnidirectional synergy horn?
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Old 1st January 2015, 03:50 AM   #11
TMHutson is offline TMHutson  United States
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How do you measure the frequency response of an omni? Same as regular? I have an omni that sounds like, and measures like poo. I am sure the low quality driver and crappy cabinet plays a part. I try to pay attention to anybody talking about omnis so I can see if they are worth playing with.
I like the curved deflector on the ones I have. Not too different from the deflector in the original post.
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Old 1st January 2015, 04:26 AM   #12
ewollowe is offline ewollowe  Australia
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Omni is something I'm interested with too (interested in most things to be honest

I've not seen many designs like this one,

http://www.roger-russell.com/omni/citationback.jpg

Roger Russell has an interesting page about them and others.
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Old 1st January 2015, 04:39 AM   #13
TMHutson is offline TMHutson  United States
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Funny, I was just about to post that website.
I found that website after picking up my omnis.
His description of the Zenith was being nice to say the least.
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Old 1st January 2015, 03:48 PM   #14
Slothrop is online now Slothrop  United States
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Yes, those old Zenith's really are poo, but not because they're 'omnidirectional'. They're just cheap. An old friend of mine had that system back when we were kids, and I remember the sound. There was a fad for omnis back in the 60s/70s, along with quadrophonic sound.

My impressions from listening to my new speakers for a week or so are very positive. They make the room seem bigger. The sound seems to be coming from a wider and more enveloping source. And the sound is good from just about anywhere in the room. So I'd say if you're thinking about trying some sort of omni build, go for it. And let us know how it goes.
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Old 1st January 2015, 06:48 PM   #15
mightym is offline mightym  United States
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Slothrop, The multi-sided approach you have utilized with the small dia. woofers works to further enhance the omni characteristic of the speaker, out of curiousity, where did you cross to the Linaeum tweeters? Do you employ any level shading on the woofers? Or do they all run without any padding, except that to match the tweeter....


BTW, those speakers look neither quick nor dirty to me!

John
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Old 1st January 2015, 07:14 PM   #16
Slothrop is online now Slothrop  United States
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Quote:
Originally Posted by mightym View Post
Slothrop, The multi-sided approach you have utilized with the small dia. woofers works to further enhance the omni characteristic of the speaker, out of curiousity, where did you cross to the Linaeum tweeters? Do you employ any level shading on the woofers? Or do they all run without any padding, except that to match the tweeter....


BTW, those speakers look neither quick nor dirty to me!

John
Thanks, John. The mid/high crossover is at 4kHz, keeping it out of the voice band. I have a sub for <120Hz or so. All the midwoofers are running at the same level.

Maybe I should give them their own thread.
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Old 3rd January 2015, 01:55 AM   #17
Patrick Bateman is offline Patrick Bateman  United States
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In an omnidirectional synergy horn, you can put the midrange and the compression driver face-to-face, like an oreo cookie.

That works better than what's pictured in post #1, as it allow you to get tighter spacing.
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Old 5th January 2015, 11:40 AM   #18
Flaesh is offline Flaesh  Russian Federation
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What about coaxials as in some Danley's speakers?..

Just assemled one really quick&dirty conventional (~80*50) synergy (1000years bedside-table remains, 2*5" 3W paper mids w\o magnets and $100 China 3" B&C, blanket instead of mids boxes), first order xover. Working from ~100-150 Hz.Mids are forward about 0.2 ms.
Seem's I practically like synergy concept..
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Old 5th January 2015, 03:37 PM   #19
Patrick Bateman is offline Patrick Bateman  United States
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Quote:
Originally Posted by Flaesh View Post
What about coaxials as in some Danley's speakers?..

Just assemled one really quick&dirty conventional (~80*50) synergy (1000years bedside-table remains, 2*5" 3W paper mids w\o magnets and $100 China 3" B&C, blanket instead of mids boxes), first order xover. Working from ~100-150 Hz.Mids are forward about 0.2 ms.
Seem's I practically like synergy concept..
For a radial horn, the pancake method is easier.

With a coax you have to figure out how to match the angle of the horn walls with the angle of the woofer cone in the coax.

I'm guessing that's why all the Danley speakers that use coaxials are molded*. The tolerances required with a coax basically dictate something made with a mold.

* there are some wooden Danley horns that use the BMS coaxial compression driver, but that's a different beast altogether.
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Old 5th January 2015, 04:35 PM   #20
Flaesh is offline Flaesh  Russian Federation
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I meant just cone+comp/ driver coax. Like SM60* not as SM100\80.
Such way horn and drivers matching is even more complex..
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