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What is the ideal High Freq extension?

I think for a world class system to sound like live music, a good smooth grain free silky (if music calls for) high freq extension is mendatory. But in my mind where the 'flatness' should roll off (at what db rate?)is a big unknown and not quite clear. Is it 10k HZ, 12.5k HZ, 15K HZ or the ideal 20k hz.

This assumes you already have excellent bass extension and mid range.

One would think at ideal 20k hz there will most likely excessive ambience and thinner sound.

What is your opinion?

Thanks.
nilthepill

Showing 1 response by tpsonic

tpsonic
1,092 posts
 
I have heard speakers with purposed response to 50Khz.While you might not hear that high up,the over-tone structure may be more completely revealed.A lot has to do with the crossover and phase linearity.
You must remember when digital "brick-walled" everything above 20Khz.Thank goodness we got past that!
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