Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Jeff KB2M
I picked up one of the CM500 headsets after hearing about them here on the
reflector. I just tried to hook them up by plugging directly into the rear
mic jack, and I'm having some difficulty getting the mic to work. I selected
(of course) rear mic input, and what is happening is I'm getting very
distorted audio when I listen in monitor mode. I tried both hi and low mic
gain, with different mic gain, and compression settings. There appears to be
no sweet spot. Any ideas?

73 Jeff kb2m



-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wes Stewart
Sent: Monday, November 23, 2009 1:52 PM
To: Elecraft List
Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN)

I second all of this. I've been using one since June.

--- On Mon, 11/23/09, Jim Brown j...@audiosystemsgroup.com wrote:

From: Jim Brown j...@audiosystemsgroup.com
Subject: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN)
To: Elecraft List elecraft@mailman.qth.net
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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Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Bruce Beford
Have you turned on the mic bias?
Bruce N1RX


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Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Jim Brown
On Mon, 23 Nov 2009 14:55:43 -0500, Jeff KB2M wrote:

I'm having some difficulty getting the mic to work. Any ideas?

Did you actually READ the last paragraph of my email (of which you quoted the 
entire text)?

73,

Jim Brown K9YC


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Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Jeff KB2M
Yes I did read it Jim. I didn't think it was necessary to mention that I
switched it on, I now see that I was wrong. As you(and more polite repliers)
think that is the problem I will, when I have some time try to determine if
the bias is actually present when switched on. By the way Jim, are you
always this grouchy? You must of not did the Sweep like I did ;) 


73 Jeff kb2m


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown
Sent: Monday, November 23, 2009 3:36 PM
To: Elecraft List
Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN),
maybe

On Mon, 23 Nov 2009 14:55:43 -0500, Jeff KB2M wrote:

I'm having some difficulty getting the mic to work. Any ideas?

Did you actually READ the last paragraph of my email (of which you quoted
the 
entire text)?

73,

Jim Brown K9YC



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Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Jeff KB2M
I had some time this evening so I checked that the K3 was actually putting
out the bias when switched on. It is, I then called the local Guitar center
and talked to the sales person who told me no problem, if their defective I
will be able to exchange them. It's great to be able to buy something's
local, and they even matched the Sam Ash price. I will have the new set
tomorrow...

73 Jeff kb2m


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M
Sent: Monday, November 23, 2009 3:57 PM
To: 'Jim Brown'; 'Elecraft List'
Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN),
maybe

Yes I did read it Jim. I didn't think it was necessary to mention that I
switched it on, I now see that I was wrong. As you(and more polite repliers)
think that is the problem I will, when I have some time try to determine if
the bias is actually present when switched on. By the way Jim, are you
always this grouchy? You must of not did the Sweep like I did ;) 


73 Jeff kb2m


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown
Sent: Monday, November 23, 2009 3:36 PM
To: Elecraft List
Subject: Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN),
maybe

On Mon, 23 Nov 2009 14:55:43 -0500, Jeff KB2M wrote:

I'm having some difficulty getting the mic to work. Any ideas?

Did you actually READ the last paragraph of my email (of which you quoted
the 
entire text)?

73,

Jim Brown K9YC



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Re: [Elecraft] Yamaha CM500 Headset is a WINNER (and a BARGAIN), maybe

2009-11-23 Thread Jim Brown
On Mon, 23 Nov 2009 21:21:57 -0500, Jeff KB2M wrote:

By the way Jim, are you always this grouchy? 

Two things set me off -- one is quotes of entire posts when only a 
few lines are necessary to convey context of the reply. The second 
is folks who say they like what I've written but then ask questions 
indicating that they haven't really read it carefully. 

I offered four specific pieces of info about how to make the mic 
work with the K3. I did that with both of my K3s, and several NCCC 
members did it with their radios. All work fine. BUT -- as I noted, 
the mic is VERY hot (high output) and can easily overload your 
computer or radio, so it's VERY important to back off the gains. If 
you don't, you'll hear LOTS of distortion.  

You must of not did the Sweep like I did ;) 

Congrats on the sweep. I ran a split site operation to maximize 
points for our club -- 10 hours at home, 11 hours at N3ZZ's great 
station. 913x79 mults there, 575x75 at home. I did something similar 
CW weekend, and made the sweep at home in 14 hours, but not at the 
second QTH. 

73,

Jim K9YC


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