[milkweg]

Quote:

Originally Posted by rhythmdevils /img/forum/go_quote.gif And don't most headphones only produce up to 20?

Most headphones have the high end rolled off below 20khz because it can be harsh on the ears with the driver so close to your ears. My DT9990pro are not rolled off and have upper extension to 35khz. The reason for upper driver extension is to make sure all frequencies are reproduced. DT990pro is designed as a studio headphone so need to reproduce all frequencies, that's why some people don't like them.

 

[milkweg]

Quote:

Originally Posted by Specialzed /img/forum/go_quote.gif I easily hear 12k, hurts alot though.

Is that a typo? I think most can hear 12k unless you are deaf. It's when you get above 17k that you have good hearing.

 

[milkweg]

Quote:

Originally Posted by nauxolo /img/forum/go_quote.gif My Grado RS-1 makes clicking noises at 17k and above ... for the OP's first link. Any idea what this is? I also get it at 30Hz

Maybe going beyond the range of what the drivers are capable of?

 

[milkweg]

Quote:

Originally Posted by Tridacnid /img/forum/go_quote.gif I can hear 21kHz if I crank my speakers up to 40%, but I can hear 20kHz and down just fine at 15-20%.

Wow, how old are you? If you are over 30 then I would classify you as having golden ears.

 

[milkweg]

Quote:

Originally Posted by plonter /img/forum/go_quote.gif if i may ask a question...i was always interested in why headphones frequency range capabilities is far beyond the capabilities of the human hearing? why do they make them like that? and what is the diferences between a 20-20 can and a 5-45 one? is there a diference between them?

Yea, deeper bass and brighter highs. DT990pro are a good example of that, 5hz - 35khz. But you have to look at their decibel level across all frequencies though, the flatter it is the better.

 

[rhythmdevils]

Quote:

Originally Posted by milkweg /img/forum/go_quote.gif It is normal not to hear very high frequencies as you get older. In the UK they are testing devices to keep teens from loitering outside convenience stores by playing high frequencies through outdoor speakers that only younger people can hear.

are you serious? That is so messed up. It's like those bark control devices for dogs. I mean if they don't want youngens around, fine, but use a broom or something.

 

[rhythmdevils]

Any bay area, California head-fier's here who are really bothered by the noise on Bart (subway)? When it goes under the bay, there's this really loud howling noise, which I'm sure is causing hearing damage to everyone on the train. But maybe it hurts me cause I can hear 20khz. I always cover my ears and everyone is like what's this guy on about? Either that or if I wear my K81dj's it's fine.

 

[immtbiker]

Quote:

Originally Posted by rhythmdevils /img/forum/go_quote.gif are you serious? That is so messed up. It's like those bark control devices for dogs. I mean if they don't want youngens around, fine, but use a broom or something.

Or play Celine Dion 24/7 on Radio Shack outdoor speakers.

 

[milkweg]

Quote:

Originally Posted by rhythmdevils /img/forum/go_quote.gif are you serious? That is so messed up. It's like those bark control devices for dogs. I mean if they don't want youngens around, fine, but use a broom or something.

Yes, I am very serious. I read the article about a year ago. Think it was maybe a BBC article but can't say for sure now.

 

[milkweg]

Quote:

Originally Posted by rhythmdevils /img/forum/go_quote.gif Any bay area, California head-fier's here who are really bothered by the noise on Bart (subway)? When it goes under the bay, there's this really loud howling noise, which I'm sure is causing hearing damage to everyone on the train. But maybe it hurts me cause I can hear 20khz. I always cover my ears and everyone is like what's this guy on about? Either that or if I wear my K81dj's it's fine.

Ever heard of city hum that only some people can hear? Low frequency hum that drives some people nuts and only some cities exhibit this phenomena. I think Vancouver, B.C. is one of them.

 

[milkweg]

Quote:

Originally Posted by immtbiker /img/forum/go_quote.gif Or play Celine Dion 24/7 on Radio Shack outdoor speakers.

But everyone can hear that so will drive real customers away too.

 

[nullstring]

I can hear 22khz? I don't think it's right >_>

 

[Peyotero]

I couldn't hear past 17k. I think working in a carpentry shop for a few years helped. Gonna use earmuffs 24/7 from now on

 

[milkweg]

I used to work in printing and the presses can get very loud. For the first 6 months I wore nothing and then finally had a pair of custom ear plugs made for me at the companies expense. That's what you need to get because they block sound better than ear muffs and are much more comfortable to wear for long periods. They make molds of the inside of your ears and then make the ear plugs from those.

 

[Peyotero]

Thanks for the kind tip

But ear plugs would be to much of a hassle (in terms of hygiene) in a dusty environment. Tried to use some in ear canal phones at work but gave up after a few days..