[Elecraft] Bose noise canceling headphones

[Joe Planisky]

I've been using a pair of Direct Sound's Extreme Isolation headphones  
for years.  They are very good for blocking out noisy environments.   
They are not noise canceling, but rather use passive techniques (tight  
fit, sound absorbing material) to reduce ambient noise by 29dB (or so  
they claim).  They are not the most comfortable to wear for long  
periods, but they are very effective.

http://www.extremeheadphones.com/ex-29.html

73
--
Joe KB8AP

On Mar 19, 2009, at 12:49 PM, dw wrote:

> Ah!
> I've always wondered how well Bose noise cancelling phones worked.
> Do they really cancel noise external to the head-set?
> I understand the concept...mic the external noise and mix it back into
> the earphones 180 out of phase.
> Just never got a chance to see how effective.
>
> There are times when I have trouble with noises in the house, and I
> would love it if the head-phones could totally cancel all that out.
> But.... not sure how far advertised is from reality  :)
>
>> I have a pair of Delta Airlines earbuds that
>> basically don't work at all, but my Bose Quietcomfort noise  
>> cancelling
>> phones SCREAM when connected to the rig. It's a pretty low signal  
>> coming out
>> of the jack, but with the right phones, it sounds wonderful.
>
>
> -- 
> Bw_dw at fastmail.net
>
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