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RE: "The radiation pattern of the KHorn...is at least 180 degrees"--no.

I don't see any measurement conditions listed. The results anechoic will be quite different from in room, with the speaker placed in a corner. Where directivity is concerned that may only be measured anechoic full space, ie., outdoors. How directive the Danley horns are I can't say, as there are no polar plots on the Danley site. But the SH60 with a 28x28 inch mouth area isn't far off from my DR280 woofer horn, which I measured anechoic full space having at least 180 degree dispersion below 500Hz, with 360 degree dispersion below 250Hz. Not that anechoic full space directivity matters here. In room what's heard from the KHorn woofer is just as much indirect as direct. What provides directional cues and along with that precise imaging is the midrange and HF horns, from which what's heard is mainly direct and very little indirect.


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