Beaming / Karlson

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Beaming / Karlson

#1 Post by Rich4349 » Fri Jul 30, 2021 12:34 pm

Is the odd, arcing aperture on the fronts of Karlsons to reduce beaming of the large driver by half, while maintaining some beaming for controlled directivity? Is this why subs are locatable > 100hz, due to the beaming?

Would a similar aperture on the mouths of a Titan or Tuba behave similarly, adding any benefit? What about an unfolded tuba with a Karlson flare in the mouth: could it be used to a higher low pass? Are there "full range" drivers that would let you use an enclosure as an all in one, WITH a better than mass produced industry standard amount of bass? ... CF0008.jpg

(Yes, Bill, I know: If it would be better that way I would have *designed* them that way. 8) )
2 DR250s, 2 27" Lab15 T-60s, 2 30" Neo Titan 39s, 1 Autotuba...and looking for more!

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Bill Fitzmaurice
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Re: Beaming / Karlson

#2 Post by Bill Fitzmaurice » Fri Jul 30, 2021 1:38 pm

That baffle configuration is supposed to be a horn, or at least Karlson thought so. It isn't. It's a series tuned dual chamber band pass. It has no directivity control properties.

The reason subs, or any speaker, are locatable above 100Hz or so has nothing to do with the baffle, it's because of the wavelengths and the distance between your ears. The brain triangulates the position of sound sources by comparing the arrival times of sound waves at each ear drum. It can't do so when the wavelengths are too long compared to how far they're apart. That's why we can't directionally locate below roughly 100Hz.

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