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Multi-Way Conventional loudspeakers with crossovers

Pseudo-coaxial with narrow directivity (and Horbach-Keele filters)
Pseudo-coaxial with narrow directivity (and Horbach-Keele filters)
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Old 29th July 2018, 08:55 PM   #31
bwaslo is offline bwaslo  United States
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Pseudo-coaxial with narrow directivity (and Horbach-Keele filters)
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Old 1st August 2018, 11:32 PM   #32
Brinkman is offline Brinkman  United States
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Wow. Nicely done!
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Old 9th August 2018, 08:16 PM   #33
Patrick Bateman is offline Patrick Bateman  United States
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Click the image to open in full size.

So it looks like you're using DSP delay on the side drivers to extend the beamwidth control down to 500Hz? (I'm too lazy to translate the PDF yet)
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Old 10th August 2018, 05:23 AM   #34
FoLLgoTT is offline FoLLgoTT  Germany
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Quote:
Originally Posted by Patrick Bateman View Post
So it looks like you're using DSP delay on the side drivers to extend the beamwidth control down to 500Hz? (I'm too lazy to translate the PDF yet)
Yes. But it the side woofers are not inverted or delayed like in a cardioid system. Instead the other drivers are delayed so that the side woofers interfere constructive and create directivity only because of their distance to each other.

Of course it has its limitations. Under 500 Hz the speaker radiates uniform in all directions. But the advantage is that there is no loss in maximum SPL in the lower frfequencies compared to a cardioid.
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Old 15th August 2018, 07:08 AM   #35
Patrick Bateman is offline Patrick Bateman  United States
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Some random observations about this speaker here : Combating Pattern Flip
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