[Elecraft] K3 - 'High Isolation Headphones'

[Wes Stewart]

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

--- On Tue, 3/2/10, Hector Padron <ad4c2008 at yahoo.com> wrote:

> From: Hector Padron <ad4c2008 at yahoo.com>
> Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
> To: "Bob Naumann" <W5OV at W5OV.COM>
> Cc: elecraft at mailman.qth.net
> Date: Tuesday, March 2, 2010, 9:44 PM
> I agree 100% since I purchased the
> CM-500 in january I can't hear anything around me,I spend
> hours listening and its very confortable,now I do have a big
> problem,I don't hear anymore my wife when she tell me the
> "honey does" that's cool.
>  
> AD4C
>  
> 
> 
> "For a refined ham it is compulsory to own a k3"
> 
> --- On Wed, 3/3/10, Bob Naumann <W5OV at W5OV.COM>
> wrote:
> 
> 
> From: Bob Naumann <W5OV at W5OV.COM>
> Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
> To: "'Barry N1EU'" <barry.n1eu at gmail.com>,
> elecraft at mailman.qth.net
> Date: Wednesday, March 3, 2010, 3:29 AM
> 
> 
> I have to agree with this follow-up with the exception that
> I think that the
> CM-500 is actually much better than Heil Pro-Set for
> isolation. 
> For me, the key to this is the larger "muffs" that
> completely cover my ears.
> 
> 
> I used them on an Icom 7800 at NR5M in the ARRL CW contest,
> and they worked
> quite well. 
> 
> They are, without question, the best ham radio bargain I
> can recall since
> the Kenwood TS830 was introduced.
> 
> 73,
> 
> Bob W5OV
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net]
> On Behalf Of Barry N1EU
> Sent: Tuesday, March 02, 2010 4:03 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
> 
> 
> 
> AD4C2009 wrote:
> > 
> > Well I spent this past weekend 18 hours in radio on
> saturday and sunday
> > with my Yamaha CM-500 on my head all the time,either
> on CW or SSB and felt
> > no tired,they are smooth and weight little in my
> head,isolation is
> > perfect.
> > 
> 
> I just wanted to post a follow-up message on this thread. 
> I just acquired a
> CM500 headset - they seem to perform quite well but they
> can hardly be
> considered a high isolation headphone.  The isolation is
> about the same as
> the Heil ProSet but falls far short of the Sennheiser
> HD280.  The CM500
> isn't really suitable if you follow the K3NA approach
> toward maximizing
> dynamic range with AGC off.  On the other hand, the CM500
> seems quite good
> indeed for normal operation with AGC on and the microphone
> gets great audio
> reports.
> 
> 73, Barry N1EU
> 
> -- 
> View this message in context:
> http://n2.nabble.com/K3-High-Isolation-Headphones-tp4530272p4663966.html
> Sent from the [K3] mailing list archive at Nabble.com.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 
> 
> 
>       
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>