Why 50-50k speakers?

Question

I am in the search for a good pair of speakers and have found that several speakers for home audio have a frequency response of 50-50k. The human ear sensitivity is 20-20k, why do this speakers need that frequency?

Answer 1

Speakers don't have a flat response. It usually looks like a trapezoid

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The 50--50K speakers have a far more flat response within 20-20K than 150-20K speakers.