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Do supertweeters matter when we cant hear past 15,000 hz?

So I have read that studies of the brain have shown that frequencies above audible are still somehow processed and generate a sense of ease, well being when associated with musical playback. As in somehow the range far above hearing is stimulating a  part of our brain, (or god knows what nuerons) that associates with a natural pleasing sound. Anybody read of this phenomenom? I see some of these supertweters extending to ridiculous highs and wonder if they do this just becauser the design allows for it or are they trying to market this broad range as somehow better. I know I cant hear above 15khz and i doubt most men here above 40 can either. I know a supertweeter helps with the audible high end but what gives with promoting a range to 65kz?
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Showing 1 response by dgarretson

dgarretson
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I like the extension of a Tannoy ST-100 super-tweeter on top of an Esotar 330D tweeter that has good HF extension of itself. (In the Merlin application the Esotar is down several db at 20khz.) But while the ST is set high at a nominal 18khz, in actuality its third-order crossover rolls down into the more audible mid-treble range. It’s conceivable that a ST is a glorified hearing aid for aging audiophiles with attenuation in their own HF response.

The ST does open up perceived treble extension and air. But put your ear close to it and all you’ll hear is faint chirping.

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