Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-31 Thread George Danner
Pete,
I'm using a CM500 that is a year or so old. It replaced one that finally
fell apart and I was tired of gluing it back together.
When I replaced the headset, I did not need to make any adjustments!

I went from a K3 to a K4 with the Yamaha headset plugged into the rear
connectors.
My Mic gain on the K4 is set at 12. TX rear mic configuration is Bias ON
Preamp OFF.

73 George AI4VZ



On Mon, Jul 31, 2023 at 9:32 AM Pete Smith N4ZR  wrote:

> My CM-500 is about 4 years old, and shedding ear-pads, but it works fine
> with my K3.
>
> 73, Pete N4ZR
>
> On 7/31/2023 6:52 AM, Alan Bloom wrote:
> > I had never used my CM-500 on a K3 so I can't do that comparison. But
> > on the K4 I had to turn on the internal mic preamp and set the mic
> > gain all the way to maximum.  That seemed to give about the correct
> > level - I could talk at normal loudness to get 5 on the ALC.
> >
> > I also use the CM-500 on my laptop to record a radio show.  I had to
> > turn up the gain close to max on the computer as well.  I think
> > late-production CM-500s just tend to have low microphone sensitivity.
> >
> > Alan
> >
> >
> > On 7/31/2023 1:40 AM, Oscar Staudt wrote:
> >> When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
> >> headphones from my K3, and plugged them into the back of my K4. I set
> >> the
> >> mic input to rear, and mic bias on.  I expected the mic to perform
> >> like it had in the K3.
> >>
> >>
> >> I attempted to get 3-5 bars of ALC by turning up the mic gain
> >> control.  Even
> >> with the gain up to 80, I’d have to speak *very* loudly to just get a
> >> flicker on the ALC meter.
> >>
> >>
> >> I then went back into the mic configuration and turned on the preamp
> >> (14dB).
> >> After that I could get  some ALC bars with the mic gain around 65 or
> >> more.  But
> >> I still  had to talk much louder than I had to with the same mic on
> >> the K3.
> >> (note:  mic level on the K3 was set around 7).
> >>
> >>
> >> Question:  Is it reasonable to expect that I’d have to have the mic
> >> gain at
> >> such a high level - and still have to talk louder than my normal (K3)
> >> level?
> >>
> >>
> >> BTW, I can hook up the MH-4, switch to front mic, and all works
> >> smooth with
> >> mic gain around 12.
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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-31 Thread Pete Smith N4ZR
My CM-500 is about 4 years old, and shedding ear-pads, but it works fine 
with my K3.


73, Pete N4ZR

On 7/31/2023 6:52 AM, Alan Bloom wrote:
I had never used my CM-500 on a K3 so I can't do that comparison. But 
on the K4 I had to turn on the internal mic preamp and set the mic 
gain all the way to maximum.  That seemed to give about the correct 
level - I could talk at normal loudness to get 5 on the ALC.


I also use the CM-500 on my laptop to record a radio show.  I had to 
turn up the gain close to max on the computer as well.  I think 
late-production CM-500s just tend to have low microphone sensitivity.


Alan


On 7/31/2023 1:40 AM, Oscar Staudt wrote:

When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
headphones from my K3, and plugged them into the back of my K4. I set 
the

mic input to rear, and mic bias on.  I expected the mic to perform
like it had in the K3.


I attempted to get 3-5 bars of ALC by turning up the mic gain 
control.  Even

with the gain up to 80, I’d have to speak *very* loudly to just get a
flicker on the ALC meter.


I then went back into the mic configuration and turned on the preamp 
(14dB).
After that I could get  some ALC bars with the mic gain around 65 or 
more.  But
I still  had to talk much louder than I had to with the same mic on 
the K3.

(note:  mic level on the K3 was set around 7).


Question:  Is it reasonable to expect that I’d have to have the mic 
gain at

such a high level - and still have to talk louder than my normal (K3)
level?


BTW, I can hook up the MH-4, switch to front mic, and all works 
smooth with

mic gain around 12.
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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-31 Thread Alan Bloom
I had never used my CM-500 on a K3 so I can't do that comparison. But on 
the K4 I had to turn on the internal mic preamp and set the mic gain all 
the way to maximum.  That seemed to give about the correct level - I 
could talk at normal loudness to get 5 on the ALC.


I also use the CM-500 on my laptop to record a radio show.  I had to 
turn up the gain close to max on the computer as well.  I think 
late-production CM-500s just tend to have low microphone sensitivity.


Alan


On 7/31/2023 1:40 AM, Oscar Staudt wrote:

When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
headphones from my K3, and plugged them into the back of my K4.  I set the
mic input to rear, and mic bias on.  I expected the mic to perform
like it had in the K3.


I attempted to get 3-5 bars of ALC by turning up the mic gain control.  Even
with the gain up to 80, I’d have to speak *very* loudly to just get a
flicker on the ALC meter.


I then went back into the mic configuration and turned on the preamp (14dB).
After that I could get  some ALC bars with the mic gain around 65 or more.  But
I still  had to talk much louder than I had to with the same mic on the K3.
(note:  mic level on the K3 was set around 7).


Question:  Is it reasonable to expect that I’d have to have the mic gain at
such a high level - and still have to talk louder than my normal (K3)
level?


BTW, I can hook up the MH-4, switch to front mic, and all works smooth with
mic gain around 12.
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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-30 Thread Jim Brown

On 7/30/2023 4:40 PM, Oscar Staudt wrote:

I attempted to get 3-5 bars of ALC by turning up the mic gain control.  Even
with the gain up to 80, I’d have to speak*very*  loudly to just get a
flicker on the ALC meter.


Do the headphones work?  Are you sure that the mic is plugged all the 
way into the jack?


73, Jim K9YC

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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-30 Thread David Herring
Actually, I had (have) this very same problem and brought it up on here quite 
some time ago.  CM-500, mic and phones plugged into proper jacks on rear, 
preamp on, bias on, mic gain at max, mic right at my lips, and I still have to 
talk very loudly to get any response out of the ALC meter.  I got another 
CM-500 and swapped it in, and it was better…I didn’t have to talk as loud, but 
still way louder than I’d like or should have to. 

I never did puzzle out a solution for this.  So if I need or want to get on SSB 
and can’t talk loud (say like if the XYL is trying to sleep in the next room), 
I put another mic on the front connector and have no problems getting plenty of 
response out of that, even if talking in a hushed voice. 

Oscar, if you find a solution to this, please be sure to post it on here…I’d 
like for this work…failing that I might try someday to find a different 
headset/mic combo...

73,
Dave - N5DCH




> On Jul 30, 2023, at 6:17 PM, Mike Dodd  wrote:
> 
> On 7/30/2023 7:40 PM, Oscar Staudt wrote:
>> When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
>> headphones from my K3, and plugged them into the back of my K4.  I set the
>> mic input to rear, and mic bias on.  I expected the mic to perform
>> like it had in the K3.
>> I attempted to get 3-5 bars of ALC by turning up the mic gain control.  Even
>> with the gain up to 80, I’d have to speak *very* loudly to just get a
>> flicker on the ALC meter.
> 
> My CM500 mic is plugged into the rear mic jack. I turned on the 14dB preamp 
> and bias. With the front panel MIC set to 15, I get 5 on the ALC meter with a 
> normal voice -- no shouting or extra-loud is needed.
> 
> Don't know what's different, but those are my settings and result.
> 
> 73. Mike N4CF
> 
> 
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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-30 Thread Mike Dodd

On 7/30/2023 7:40 PM, Oscar Staudt wrote:

When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
headphones from my K3, and plugged them into the back of my K4.  I set the
mic input to rear, and mic bias on.  I expected the mic to perform
like it had in the K3.


I attempted to get 3-5 bars of ALC by turning up the mic gain control.  Even
with the gain up to 80, I’d have to speak *very* loudly to just get a
flicker on the ALC meter.


My CM500 mic is plugged into the rear mic jack. I turned on the 14dB 
preamp and bias. With the front panel MIC set to 15, I get 5 on the ALC 
meter with a normal voice -- no shouting or extra-loud is needed.


Don't know what's different, but those are my settings and result.

73. Mike N4CF


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Re: [Elecraft] K4 and Yamaha CM-500 Mic?

2023-07-30 Thread G4GNX
This may sound like a silly question, but are you sure you have the plugs in 
the right way round? i.e. Not swapped over.

AFAIK this problem has not been reported on the K4 reflector and I know other 
folks are using them.

73,
Alan - G4GNX
South Coast UK
Elecraft K4D / KPA500 / KAT500 / IC-9700




> On 31 Jul 2023, at 00:40, Oscar Staudt  wrote:
> 
> When I got my K4D a month ago, I unplugged my Yamaha CM-500 mic and
> headphones from my K3, and plugged them into the back of my K4.  I set the
> mic input to rear, and mic bias on.  I expected the mic to perform
> like it had in the K3.
> 
> 
> I attempted to get 3-5 bars of ALC by turning up the mic gain control.  Even
> with the gain up to 80, I’d have to speak *very* loudly to just get a
> flicker on the ALC meter.
> 
> 
> I then went back into the mic configuration and turned on the preamp (14dB).
> After that I could get  some ALC bars with the mic gain around 65 or more.  
> But
> I still  had to talk much louder than I had to with the same mic on the K3.
> (note:  mic level on the K3 was set around 7).
> 
> 
> Question:  Is it reasonable to expect that I’d have to have the mic gain at
> such a high level - and still have to talk louder than my normal (K3)
> level?
> 
> 
> BTW, I can hook up the MH-4, switch to front mic, and all works smooth with
> mic gain around 12.

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