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Re: Isolation headphones

Subject: Re: Isolation headphones
From: "Mike Feldman" gidney_n_cloyd
Date: Wed Dec 12, 2007 6:58 pm ((PST))
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

For example:

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