Elecraft › [K3]

Yamaha CM500 Headset

Classic

List

Threaded

4 messages Options

Jaime P.Ullivarri

Yamaha CM500 Headset

Hello,
I have a Yamaha CM500 and looks exactly as Koss SB40 but this one in EUis
easy to get from Amazon and cheaper.
Both headphones have the same characteristics 120 ohm, 96 dB etc. and both
have Dynamic Mic.
<http://www.shopping.com/xSBS-Koss-Koss-SB-40-Headset-ear-cup-Yamaha-Yamaha-CM500-Headset-with-Built-In-Microphone~PRDLT-21312157-30843141>

Well I have ordered a Koss SB40 and will see.
73.
Jaime, EA6NB.

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Don Wilhelm-4

Re: Yamaha CM500 Headset

Jamie,

Without regard to what that ad states, the CM500 has an electret element
- NOT a dynamic element.
I don't know about the Koss SB40, I could not find any reliable data,
but they seem to be universally advertized as "computer headset" and
since most if not all computer microphones are electret types, I suspect
the SB40 is also electret type.

When you get yours, see if it works without bias - if so, it must be a
dynamic type, but if it needs bias, it is an electret.

73,
Don W3FPR

On 2/18/2012 1:10 PM, Jaime P.Ullivarri wrote:

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Mitch Wolfson, DJØQN / K7DX

Re: Yamaha CM500 Headset

In reply to this post by Jaime P.Ullivarri

Thanks, Jaime, then I will let you play guinea pig instead of me and
wait for your feedback.

73,
Mitch DJ0QN

On 18.02.2012 19:10, Jaime P.Ullivarri wrote:

> Hello,
> I have a Yamaha CM500 and looks exactly as Koss SB40 but this one in EUis
> easy to get from Amazon and cheaper.
> Both headphones have the same characteristics 120 ohm, 96 dB etc. and both
> have Dynamic Mic.
> <http://www.shopping.com/xSBS-Koss-Koss-SB-40-Headset-ear-cup-Yamaha-Yamaha-CM500-Headset-with-Built-In-Microphone~PRDLT-21312157-30843141>
>
> Well I have ordered a Koss SB40 and will see.
> 73.
> Jaime, EA6NB.
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
>
> --
> Mitch Wolfson
> DJØQN / K7DX
> Georg-Kerschensteiner-Str. 42, 81829 Muenchen, Germany
> Skype: mitchwo - Home:+49 89 32152700 - Mobile:+49 172 8374436
> Echolink: 3001 - IRLP: 5378

Jaime P.Ullivarri

Re: Yamaha CM500 Headset

In reply to this post by Jaime P.Ullivarri

Yes I see, the advert is wrong but I think the Koss is also electret, just a
few days to know.
I don't plug my CM500 directly to the K3, it is connected with its battery
to a NCS Multi=Switcher, I use it with other rigs also, so I have the K3
bias OFF.
I will try the Koss directly to the K3 with bias ON.
73.
Jaime, EA6NB.

-----Mensaje original-----
From: Pete Smith N4ZR
Sent: Saturday, February 18, 2012 19:40
To: [hidden email]
Subject: Re: [Elecraft] Yamaha CM500 Headset

My Yamaha CM500 does not have a dynamic mike, rather an electret.

73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at
reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000 and
arcluster.reversebeacon.net, port 7000

On 2/18/2012 1:10 PM, Jaime P.Ullivarri wrote: