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Yamaha CM500 Headset is a WINNER (and a BARGAIN)

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Ken Wagner K3IU

Re: Yamaha CM500 Headset is a WINNER ( and a BARGAIN )

The price hasn't changed. Still free shipping. I ordered one on 12/4/09
shortly after I got their email and it is still listed as on "backorder."
73,
Ken K3IU
~~~~~~~~~~~~~~~~~~~~~~~~~
Gary W. Marklund wrote:
> I had them on "watch" at BH and received an email about a week ago that they
> are no longer stocking them, but will handle as special order. Don't know if
> their price has changed.
>
> Gary
>
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sm7vzx

SV: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Bob Maser

Hello Bob,

It will be nice to hear your experience with Yamaha CM500 and K2, when it arrive…

Best Regards

Samir, 7S7V

www.qsl.net/7s7v

Från: Bob Maser [via Elecraft] [mailto:[hidden email]]
Skickat: den 9 december 2009 22:04
Till: sm7vzx
Ämne: Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

I ordered mine through Full Compass. With shipping it was $48 but they are
out of stock and don't expect to be able to ship until after the first of
the year.

Bob W6TR
----- Original Message -----
From: "sm7vzx" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, December 09, 2009 1:48 PM
Subject: Re: [Elecraft] [HAM] Yamaha CM500 Headset is a WINNER (and a
BARGAIN)

>
> Is someone tried on K2? If YES, what kind of settings you are using on K2?
>
> Thanks
> 7S7V
>
>
> Wes Stewart wrote:
>>
>> I second all of this. I've been using one since June.
>>
>> --- On Mon, 11/23/09, Jim Brown <[hidden email]> wrote:
>>
>> From: Jim Brown <[hidden email]>
>> Subject: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN)
>> To: "Elecraft List" <[hidden email]>
>> Date: Monday, November 23, 2009, 11:28 AM
>>
>> Last night, K6MM posted to the NCCC Email list:
>>
>>>Headset Report: The new Yamaha CM500 headset performed flawlessly.
>>>Great reports, comfortable all weekend, good soundproofing. A real
>>>bargain at $40 -- thanks again for the group purchase, Josh (W6XU).
>>
>> After about 22 hours of use in SS-SSB, I'd like to reinforce John's
>> comments on these headsets. I find the headset quite comfortable,
>> the cans sound very good, and the mic produces GREAT audio. I bought
>> three, and they are replacing the EV RE16 that I've used exclusively
>> for contesting for the last five years! If you worked W6BX, K9YC,
>> K6MM, AK6M, or W6XU, you were listening to the CM500.
>>
>> The mic in this headset is not a FLAT mic, but it's quite smooth and
>> clean sounding, and the EQ is close to perfect for ham radio and
>> contesting. It sounds MUCH MUCH MUCH better than most Heils I've
>> heard (and at 1/3 the price). Because it's EQed for communications
>> use and my existing voice messages were recorded with an RE16 (a very
>> flat professional recording/broadcast mic), I had to re-record all of
>> my SS messages.
>>
>> The only negative of this mic (and it's a minor one, because it's
>> easy to work around it) is that it is a bit sensitive to breath pop
>> and handling noise, so you need to roll off the low end AND keep it
>> away from your mouth. I found myself alternating between two
>> positions -- one below my mouth a few inches, and the other a few
>> inches above and to the side, but out of the way of my nose (so that
>> breathing didn't get into the mic). Both positions are quite
>> comfortable, and both sound very good. I used the higher position
>> for recording the messages.
>>
>> One VERY important caution -- the output from this mic is VERY high,
>> and can easily overload the electronics that it is feeding if you
>> don't take care with gain settings. To record, I ran straight into
>> the sound card of my IBM T22 (eight year old Thinkpad) with the mic
>> preamp OFF, the gain at minimum, and the mic about four inches away.
>> Any closer caused the sound card to clip! I did NO eq while
>> recording.
>>
>> When operating, I plugged the mic and headset into the rear panel
>> connectors, turned on the bias (tap 2 on the keypad while in the mic
>> select menu) and set mic gain to Low (tap 1 on the keypad in the mic
>> select menu). I used max cut of the two lowest bands on the K3 to
>> minimize the breath and handling noise. With other rigs, you may need
>> to do that with a series cap.
>>
>> 73,
>>
>> Jim K9YC
>>
>>
>>
>>
>>
>>
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>>
>>
>
> --
> View this message in context:
> http://n2.nabble.com/Yamaha-CM500-Headset-is-a-WINNER-and-a-BARGAIN-tp4052975p4141865.html
> Sent from the [HAM] mailing list archive at Nabble.com.
> ______________________________________________________________
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Jim Brown-10

Re: SV: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

On Thu, 10 Dec 2009 11:03:25 -0800 (PST), sm7vzx wrote:

>It will be nice to hear your experience with Yamaha CM500 and K2

Based on my experience with several mics on my K2, I'd say that it
should work just fine if wired properly. The response and high
output level of the CM500's mic is just what the K2 needs! Simply
study the K2 doc for mic wiring and the tutorial info on my website.

http://audiosystemsgroup.com/publish.htm

73,

Jim K9YC

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Rick Prather

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Jim Brown-10

Got mine a couple of days ago and ran some on the air tests with my favorite audio critic and he liked it a lot once we got the EQ right for me.

However, I have a question about the mic connector. It's a stereo plug (why I don't know except to perhaps make it more compatible with a PC sound card) and the mic input on the K3 is Mono. Should I use a mono adaptor or not? Doesn't seem to matter but I am worried about possible damage to the K3 since I have heard that at one time that mis-match was a problem with the Line In connector.

Rick
K6LE

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Dick Dievendorff

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

I wouldn't bother with a mono adapter.

If I read the KIO3 schematic correctly, the K3's back-panel microphone
connector and Line In connector are stereo jacks with only the tip wired.

I think the damage you refer to might have been from a mono speaker plug
that shorts one side of the speaker amplifier to ground.

Dick, K6KR

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of K6LE
Sent: Wednesday, December 23, 2009 4:57 PM
To: Elecraft List
Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN)

Got mine a couple of days ago and ran some on the air tests with my favorite
audio critic and he liked it a lot once we got the EQ right for me.

However, I have a question about the mic connector. It's a stereo plug (why
I don't know except to perhaps make it more compatible with a PC sound card)
and the mic input on the K3 is Mono. Should I use a mono adaptor or not?
Doesn't seem to matter but I am worried about possible damage to the K3
since I have heard that at one time that mis-match was a problem with the
Line In connector.

Rick
K6LE

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Ignacy

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

I have one and the headphones are pretty good. However, there is RF pickup with high power on 20m. Probably KIO3 needs to be modified. There is no trace of RF pickup with Heil HC5.
Ignacy

Jim Brown-10

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Rick Prather

On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote:

>It's a stereo plug

No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used
for stereo, or can be used for other things like an electret mic. It
could also be used to carry shielded balanced audio wiring.

With this mic, the tip is audio high, the sleeve is audio return and
cable shield, and the ring is +Vdc to power the tiny impedance
converter inside the mic. For more on this, see

http://audiosystemsgroup.com/HamInterfacing.pdf

and the Appendix on audio for ham radio in

http://audiosystemsgroup.com/RFI-Ham.pdf

73,

Jim K9YC

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Rick Prather

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

Jim,

I thought that too but what's puzzling is that the mic gets bias even with the mono adaptor in line.

Rick
K6LE

On 12/23/2009, at 9:11 , Jim Brown wrote:

> On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote:
>
>> It's a stereo plug
>
> No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used
> for stereo, or can be used for other things like an electret mic. It
> could also be used to carry shielded balanced audio wiring.
>
> With this mic, the tip is audio high, the sleeve is audio return and
> cable shield, and the ring is +Vdc to power the tiny impedance
> converter inside the mic. For more on this, see

Joe Subich, W4TV-4

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Jim Brown-10

If its like most current computer microphones tip and
ring are connected in parallel.

73,

... Joe, W4TV

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Jim Brown
> Sent: Thursday, December 24, 2009 12:11 AM
> To: Elecraft List
> Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and
> a BARGAIN)
>
>
> On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote:
>
> >It's a stereo plug
>
> No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used
> for stereo, or can be used for other things like an electret mic. It
> could also be used to carry shielded balanced audio wiring.
>
> With this mic, the tip is audio high, the sleeve is audio return and
> cable shield, and the ring is +Vdc to power the tiny impedance
> converter inside the mic. For more on this, see
>
> http://audiosystemsgroup.com/HamInterfacing.pdf
>
> and the Appendix on audio for ham radio in
>
> http://audiosystemsgroup.com/RFI-Ham.pdf
>
> 73,
>
> Jim K9YC
>

Rick Prather

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

Thanks for all the help guys. I have taken the mono adaptor out of the line and will carry on enjoying the radio and the CM500.

Rick
K6LE

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Jim Brown-10

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Rick Prather

On Thu, 24 Dec 2009 04:01:18 -0800, K6LE wrote:

>I thought that too but what's puzzling is that the mic gets bias even
>with the mono adaptor in line.

There's a wide variation in how computer sound cards are wired, so Yamaha
provides adapters that make the mic work with as many of them as
possible. There are several wiring tricks that can be played to provide
the needed bias current. Since the CM500 works when plugged straight into
my computers and the K3, I haven't bothered to study what those adapters
do.

73,

Jim K9YC

>Rick
>K6LE

>On 12/23/2009, at 9:11 , Jim Brown wrote:

>> On Wed, 23 Dec 2009 16:56:44 -0800, K6LE wrote:
>>
>>> It's a stereo plug
>>
>> No, it's not a "stereo" plug, it's a 3-circuit plug the CAN be used
>> for stereo, or can be used for other things like an electret mic. It
>> could also be used to carry shielded balanced audio wiring.
>>
>> With this mic, the tip is audio high, the sleeve is audio return and
>> cable shield, and the ring is +Vdc to power the tiny impedance
>> converter inside the mic. For more on this, see

W6ODJ

Re: Yamaha CM500 Headset is a WINNER (and a BARGAIN)

In reply to this post by Ignacy

Ignacy,

I've found that it helps to put a small clip-on ferrite choke RIGHT AT the end of the CM500 mike boom, just before the actual electret element. My problem is also 20 meters.

73,

Oliver
W6ODJ

On 23 Dec 2009, at 6:03 PM, Ignacy wrote:

>
> I have one and the headphones are pretty good. However, there is RF pickup
> with high power on 20m. Probably KIO3 needs to be modified. There is no
> trace of RF pickup with Heil HC5.
> Ignacy
> --
> View this message in context: http://n2.nabble.com/Yamaha-CM500-Headset-is-a-WINNER-and-a-BARGAIN-tp4052975p4211513.html
> Sent from the [HAM] mailing list archive at Nabble.com.
> ______________________________________________________________
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>