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Multi-Way Conventional loudspeakers with crossovers

What are some good example of baffle design to improve diffraction
What are some good example of baffle design to improve diffraction
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Old 27th August 2017, 03:06 PM   #1
andy2 is offline andy2  United States
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Default What are some good example of baffle design to improve diffraction

I am looking for a few baffle designs to improve diffraction. Troels has a few good designs which I posted below. Avalon Acoustic is another good example and looks good too.
What are some of baffle designs you have used in your design to improve diffraction?

Here is an example from Troels which I also use in for my speakers.
Click the image to open in full size.
Somewhat easier to do but probably not quite optimized.
Click the image to open in full size.

A classic from Avalon Acoustic (by the way anyone knows they still have a patent on this design?). Looks beautiful as well.
Click the image to open in full size.
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Old 27th August 2017, 03:15 PM   #2
Bill poster is offline Bill poster  Thailand
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I can't see how they improve anything much. Troels is going for time alignment, but adding diffraction issues in the process. Maybe Magico have it right with their soft curved baffles and just deal with phase issues in the crossover.
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Old 27th August 2017, 03:29 PM   #3
GM is offline GM  United States
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Open cell foam [supra, depending on the app] baffle is my preference.

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Old 27th August 2017, 03:51 PM   #4
andy2 is offline andy2  United States
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Quote:
Originally Posted by Bill poster View Post
I can't see how they improve anything much. Troels is going for time alignment, but adding diffraction issues in the process. Maybe Magico have it right with their soft curved baffles and just deal with phase issues in the crossover.
I've made a typical rectangular monitor box with the tweeter in middle, and another one with the same dimension but now the edges cut out like that of the Avalon and the dips and peaks on the tweeter less pronounce.
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Old 27th August 2017, 03:54 PM   #5
Kindhornman is offline Kindhornman  United States
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The reality is that all the baffle work you can do can never eliminate baffle diffraction. Besides a sphere there is always some diffraction,it is a given. All you can truly accomplish is to change the frequency of the diffraction or carefully smear the diffraction with large rounded radius to eliminate any sharp diffraction, beyond that you are only fooling yourself. No diffraction requires a sphere or a truly infinite baffle.
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Old 27th August 2017, 03:59 PM   #6
scottjoplin is offline scottjoplin  Wales
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Cover baffle in wool felt
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Old 27th August 2017, 04:47 PM   #7
Bill poster is offline Bill poster  Thailand
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To me, this is a good baffle design. Also like the way the tweeter isnt close to the top edgeClick the image to open in full size.
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Old 27th August 2017, 05:03 PM   #8
Jaal is offline Jaal
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15" midbass
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Old 27th August 2017, 05:09 PM   #9
eriksquires is offline eriksquires  United States
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Personally, I am a big fan of the ultra-wide designs. I have never heard anything beat them. Here's an example:

Click the image to open in full size.

Read what Troels says about the wide baffle here:

Poor Man'

Another speaker that took this approach was the Snell A/III, though it only applied to the tweeter/midrange assembly.
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Last edited by eriksquires; 27th August 2017 at 05:20 PM.
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Old 27th August 2017, 05:17 PM   #10
scottjoplin is offline scottjoplin  Wales
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Funny, what's now called ultra wide was the norm when men were in charge of speaker purchase
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