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K3 - 'High Isolation Headphones'

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Tom Boucher

K3 - 'High Isolation Headphones'

Someone here made some recommendations for noise-cancelling headphones. For several years, on long-haul flights, I've been using the Fujikon Pro-Luxe NC-4 which are excellent and much lower cost than others - I paid around GBP 22 (about $35). I bought mine from Radioworld here in UK. Can't really imagine why anyone would need noise-cancelling phones for ham operation, unless the rig is in the living room I guess.

73
Tom G3OLB
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Bill W4ZV

Re: K3 - 'High Isolation Headphones'

Tom Boucher wrote

Can't really imagine why anyone would need noise-cancelling phones for ham operation

Amplifier blower noise.

73, Bill

Ed Muns, W0YK

Re: K3 - 'High Isolation Headphones'

> Tom Boucher wrote:
> >
> > Can't really imagine why anyone would need noise-cancelling
> phones for
> > ham operation
> >

Bill Tippet replied:
>
> Amplifier blower noise.
>

And, pounding rain on a tin roof in the Caribbean!

Ed - W0YK
-----------------------------------------------
Ed Muns
Muns Vineyard - www.munsvineyard.com
FaceBook - www.facebook.com/munsvineyard

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David Cutter

Re: K3 - 'High Isolation Headphones'

In reply to this post by Bill W4ZV

Other phone contesters in the same room who don't have sidetone (monitor).

David
G3UNA

----- Original Message -----
From: "Bill W4ZV" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, February 07, 2010 6:52 PM
Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'

>
>
> Tom Boucher wrote:
>>
>> Can't really imagine why anyone would need noise-cancelling phones for
>> ham
>> operation
>>
>
> Amplifier blower noise.
>
> 73, Bill
> --
> View this message in context:
> http://n2.nabble.com/K3-High-Isolation-Headphones-tp4530272p4530474.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Brendan Minish

Re: K3 - 'High Isolation Headphones'

In reply to this post by Bill W4ZV

I have, in previous set-ups used Air-conditioning ducting to help a lot
with blower noise by rerouting the air-flow (further) away from the
operating position. This also allowed me to situate the amp in a
location that would have been otherwise unsuitable due to poor airflow

needless to say if anyone else wishes to try this, then please take good
care to ensure that the airflow is still more than good enough to
provide the required cooling and the duct for the exhaust air can handle
the heat. I used an aluminium flexible duct for the exhaust

On Sun, 2010-02-07 at 10:52 -0800, Bill W4ZV wrote:

> Amplifier blower noise.
>
> 73, Bill

--
73
Brendan EI6IZ

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Bob - W0GI

Re: K3 - 'High Isolation Headphones'

Put some David Clarks on your head. You won't hear outside noise, but after a few hours of those things on your you head, you will wish you were dead. :>)

Sorry, just a pilot joke......

Deni F5VJC

Re: K3 - 'High Isolation Headphones'

I recently tried ear defenders used together with earbuds but I didn't
like them, uncomfortable and too fiddly.

Considered a Dave Clark headset, but too expensive and seemed to start a
whole new thread about best headset...for Pilots!

I ordered and have just received direct from USA the Extreme Isolation
EX-29 headphones and have to say I'm very pleased with them.

Excellent sensitivity, with the K3, good fidelity and completely blocks
my Amplifier and PC fan noise. Great !

73, Deni
F5VJC
K3 325

Bob - W0GI wrote:
> Put some David Clarks on your head. You won't hear outside noise, but after a
> few hours of those things on your you head, you will wish you were dead. :>)
>
> Sorry, just a pilot joke......
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David Cutter

Re: K3 - 'High Isolation Headphones'

Let us know what they are like after several hours in a contest.

David
G3UNA

---- Deni <[hidden email]> wrote:

Doug Turnbull

Re: K3 - 'High Isolation Headphones'

In reply to this post by Deni F5VJC

If one checks the website for these phones previously given there is a link to a UK distributor. The EX 29 price delivered to EI land is about £99.

I have also tried ear defenders and sony earplug phones. It is indeed very quiet but the defenders are uncomfortable to wear. The clamping action over the full period of a contest is uncomfortable and tiring. I would prefer the Pro-Set Plus by Heil even though they do not block external sounds nearly as well. I am going to try the EX 29.

73 Doug EI2CN

On Mon, 08 Feb 2010 13:03:18 +0100, Deni <[hidden email]> wrote:

> I recently tried ear defenders used together with earbuds but I didn't
> like them, uncomfortable and too fiddly.
>
> Considered a Dave Clark headset, but too expensive and seemed to start a
> whole new thread about best headset...for Pilots!
>
> I ordered and have just received direct from USA the Extreme Isolation
> EX-29 headphones and have to say I'm very pleased with them.
>
> Excellent sensitivity, with the K3, good fidelity and completely blocks
> my Amplifier and PC fan noise. Great !
>
> 73, Deni
> F5VJC
> K3 325
>
> Bob - W0GI wrote:
>> Put some David Clarks on your head. You won't hear outside noise, but
> after a
>> few hours of those things on your you head, you will wish you were dead.
> :>)
>>
>> Sorry, just a pilot joke......
> ______________________________________________________________
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AD4C2009

Dave Clark High Isolation Headphones

In reply to this post by Deni F5VJC

I have been working as electronic and comunications technician for the government for 18 years now and one of my jobs has been installing Motorola radios to the fire dept trucks and all of them use as internal intercom and radio interface as well the famous Dave Clark green color headsets with boom mic and certainly they are a perfect seal,once in your head you will hear almost nothing around you,our fire fighters love them specially when they have to drive opening the traffic with the very loud 100W siren in front of the truck,those are real loud but with the Dave Clarck headset that siren is very weak in your ears BUT I agree they are so heavy and unconfortable that you will not be able to work a contest or even dxing for few hours,they are designed for short runs from the Fire station to the site in problems,
Don't buy them,you will lose your money.

AD4C

"For a refined ham it is compulsory to own a k3"

--- On Mon, 2/8/10, Deni <[hidden email]> wrote:

From: Deni <[hidden email]>
Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
To: "Bob - W0GI" <[hidden email]>
Cc: [hidden email]
Date: Monday, February 8, 2010, 12:03 PM

I recently tried ear defenders used together with earbuds but I didn't
like them, uncomfortable and too fiddly.

Considered a Dave Clark headset, but too expensive and seemed to start a
whole new thread about best headset...for Pilots!

I ordered and have just received direct from USA the Extreme Isolation
EX-29 headphones and have to say I'm very pleased with them.

Excellent sensitivity, with the K3, good fidelity and completely blocks
my Amplifier and PC fan noise. Great !

73, Deni
F5VJC
K3 325

Bob - W0GI wrote:
> Put some David Clarks on your head. You won't hear outside noise, but after a
> few hours of those things on your you head, you will wish you were dead. :>)
>
> Sorry, just a pilot joke......
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AD4C2009

Re: K3 - 'High Isolation Headphones'

In reply to this post by Doug Turnbull

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.Family at the living room with the big TV and sorround sound very loud don't bother me anymore,its another choice,for only $42 sold in the states by B&H NY.

AD4C

"For a refined ham it is compulsory to own a k3"

--- On Mon, 2/8/10, turnbull <[hidden email]> wrote:

From: turnbull <[hidden email]>
Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
To: "Deni" <[hidden email]>
Cc: "Bob - W0GI" <[hidden email]>, [hidden email]
Date: Monday, February 8, 2010, 1:09 PM

If one checks the website for these phones previously given there is a link to a UK distributor.   The EX 29 price delivered to EI land is about £99.

I have also tried ear defenders and sony earplug phones.   It is indeed very quiet but the defenders are uncomfortable to wear. The clamping action over the full period of a contest is uncomfortable and tiring. I would prefer the Pro-Set Plus by Heil even though they do not block external sounds nearly as well. I am going to try the EX 29.

   73 Doug EI2CN

On Mon, 08 Feb 2010 13:03:18 +0100, Deni <[hidden email]> wrote:

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K1LI

Re: K3 - 'High Isolation Headphones'

In reply to this post by Bob - W0GI

I received a Clarity Aloft headset as a gift. I am very impressed with the
quality of RX and TX sound and they are very comfortable to wear. The
headset and boom comprise a continuous wire frame that gently but firmly
grasps the head, while the "earbud" material and transducers are derived
from hearing aids, which are obviously designed for long-wearing comfort.

The earpieces provide excellent isolation from nearby sounds. The noise from
my amplifier blowers -- directly to my left at the operating position --
used to drive me crazy, but no more. I have tried several times to get up
and walk away from the radio with the headset on because I forgot I was
wearing it.

The RX and TX transducers are both of the "wide range" variety. The first TX
audio reports I received said that the audio was very "bassy," so the ESSB
"community" should *really* love them. The RX and TX equalizers on the K3
have become very valuable for tailoring the response to "communications"
standards for both day-to-day and contest use.

--
73 -- Brian -- K1LI
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Barry N1EU

Re: K3 - 'High Isolation Headphones'

In reply to this post by AD4C2009

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

lstavenhagen

Re: K3 - 'High Isolation Headphones'

In reply to this post by Bob - W0GI

>Put some David Clarks on your head. You won't hear outside noise, but after a few hours of those things on your you head, you will wish you were dead. :>)

Sorry, just a pilot joke...... <

Speaking of that, I've been thinking of plugging my Telex 50-D ANR headset into my K2 just for these very reasons you guys have been talking about hi hi.

And yes I agree on the David Clark's (My CFI used to call them "David Clamps").

Sorry for the off-topic pilot jokes ;)

73,
LS
W5QD (PP-ASEL)

Bob Naumann W5OV

Re: K3 - 'High Isolation Headphones'

In reply to this post by Barry N1EU

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: [hidden email]
[mailto:[hidden email]] On Behalf Of Barry N1EU
Sent: Tuesday, March 02, 2010 4:03 PM
To: [hidden email]
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.
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Dick Dievendorff

Re: K3 - 'High Isolation Headphones'

For CW contests, I tried a pair of Direct Sound EX-29 "Extreme Isolation"
headphones. They don't have a model with a boom mike.

I find them very isolating, but over a few hours I'm sweating under them a
bit more than I'm comfortable with. They're great as part of the headphone
rotation. I find that sometimes I can change headphones and stay in the
chair longer than if I just stay with one headset.

I prefer isolation to phase-cancelling noise reduction. Without any real
knowledge of the acoustic science, I have an opinion that noise cancellation
is yet another distortion, and it all adds up. Phase cancellation can't be
perfect. I use noise cancelling headphones on airplanes and enjoy them for
that purpose.

The EX-29 headphones aren't the bargain that the Yamaha CM-500 is.

73 de Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Bob Naumann
Sent: Tuesday, March 02, 2010 7:29 PM
To: 'Barry N1EU'; [hidden email]
Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'

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: [hidden email]
[mailto:[hidden email]] On Behalf Of Barry N1EU
Sent: Tuesday, March 02, 2010 4:03 PM
To: [hidden email]
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.
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Philippe Trottet

Re: K3 - 'High Isolation Headphones'

In reply to this post by Barry N1EU

Dears,
I'm using a SONY MDR 7505 since 2003 with various rigs.
Not a noise cancelling headphone but great comfort, with a very clear
audio on cw, ssb & am/fm.
Power (mW):1000
Impedance: 24 Ω
Frequency response: 10Hz - 25Khz
Sensibility (dB / W / m): 106
Weight: 220g without cable
73's
Philippe A65BI (F5LTB)
K3#3616

>>> Barry N1EU <[hidden email]> 03-03-2010 2:02 >>>

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.
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AD4C2009

Re: K3 - 'High Isolation Headphones'

In reply to this post by Bob Naumann W5OV

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 <[hidden email]> wrote:

From: Bob Naumann <[hidden email]>
Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
To: "'Barry N1EU'" <[hidden email]>, [hidden email]
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: [hidden email]
[mailto:[hidden email]] On Behalf Of Barry N1EU
Sent: Tuesday, March 02, 2010 4:03 PM
To: [hidden email]
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.
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n7ws

Re: K3 - 'High Isolation Headphones'

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 <[hidden email]> wrote:

> From: Hector Padron <[hidden email]>
> Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
> To: "Bob Naumann" <[hidden email]>
> Cc: [hidden email]
> 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 <[hidden email]>
> wrote:
>
>
> From: Bob Naumann <[hidden email]>
> Subject: Re: [Elecraft] K3 - 'High Isolation Headphones'
> To: "'Barry N1EU'" <[hidden email]>,
> [hidden email]
> 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: [hidden email]
> [mailto:[hidden email]]
> On Behalf Of Barry N1EU
> Sent: Tuesday, March 02, 2010 4:03 PM
> To: [hidden email]
> 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.
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Bob Cunnings NW8L

Re: K3 - 'High Isolation Headphones'

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 <[hidden email]> 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
>
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