[Elecraft] K3 - 'High Isolation Headphones'

[Bob Cunnings]

Yes, I've learned that there is a difference between headphones with
foam type cushions vs. those with the gel-type cushions (and an NRR
rating), such as the Dave Clark products. The sound of a door closing
is a good indicator. I always come back to using my Dave Clark 10S-DC
stereo headset, with NRR 23dB, because I operate in a very noisy part
of the house and find that it offers the best isolation over a wide
frequency range. I hear a lot of complaints about Dave Clark being
uncomfortable to wear, some based on experience many years ago, but
find the 10S-DC to be just fine myself - perhaps the cushion design
has improved over time?

Bob NW8L

On Wed, Mar 3, 2010 at 7:09 AM, Wes Stewart <n7ws at yahoo.com> wrote:
> I'm an early advocate of the CM-500 (I bought mine in June of last year) but I don't think that they are quite as good for isolation as Hector does.
>
> In fact, what I notice is that certain noises come through "apparently" stronger, since most other noises are eliminated.  One of those is the sound of a door closing.  I often have to yank them off and go determine what's going on, since it sounds like it's been slammed.  I'm often wondering whether the XYL is POed because I'm spending too much time on the radio :-)
>
> I also have an H10-30 David Clark headset and I can guarantee this doesn't happen with it.  Not quite as comfortable tho...
>
> Wes
>