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Re: Isolation headphones

Subject: Re: Isolation headphones
From: "Michael Raphael"
Date: Wed Dec 12, 2007 7:23 pm ((PST))

These should do the trick . . . .


On Dec 12, 2007, at 8:58 PM, Mike Feldman wrote:

> On 12 Dec, 2007, at 8:38 PM, Russell wrote:
> > I continued to be disappointed with headphones (not earphones) that
> > claim to be isolation headphones. Can anyone recommend a model that
> > gives say 40db(A) isolation?
> >
> No such animal -- your head is too leaky, sound-wise.
> Best you can do with "perfect" over-the-ear hearing
> protectors is about 39 dB at 1 kHz, and maybe 42 at
> 4 and/or 8 kHz. But you'll get less attenuation at lower
> frequencies.
> For example:

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