[Elecraft] K3: CM500 vs. SB40

[Walter Underwood]

The ModMic I mentioned above seems to be a popular addition to the Bose noise-cancelling headsets. That adds a boom mic.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Mar 21, 2018, at 5:58 AM, Michael Blake <k9jri at mac.com> wrote:
> 
> I do own and use Yamaha CM500 headsets on both my KX3 and my K3s.  The CM500 is a wonderful headset!  When I don't need a mic I also use Bose QC25 noise cancelling headsets.
> 
> I am also a hearing aid user and both the Bose and Yamaha headsets are large enough to include my BTE hearing aids within the earcups.  Works well.  If your hearing aids have built in Telecoils (for magnetic pickup) the earphone drivers in the CM500 are unshielded and provide the necessary magnetic drive for the hearing aid's Telecoil pickup.  In this mode the CM500 is PERFECT!
> 
> Very 73 - Mike - K9JRI
> 
> 
> On Mar 21, 2018, at 08:49 AM, Bob McGraw K4TAX <rmcgraw at blomand.net> wrote:
> 
> I've not use a CM-500 but I do have and use the SB-40.  I have different EQ values programmed for the SB-40 as compared to the Shure SM-58 which I use.   Both, being dynamic mikes,  get great audio reports.
> 
> The issue with the SB-40, being a dynamic mike, if it is too close to the mouth it sounds a bit bottom heavy.    With most dynamic mikes, mike-to-mouth distance is very important.  To close = too much bottom end.  With the SB-40 about 2" from the mouth and about mid lip/chin level I find to be best.  Don't get it up high above the mouth as breathing through the nose will be noticed.
> 
> 73
> 
> Bob, K4TAX
> 
> 
> On 3/20/2018 10:54 PM, elecraft-request at mailman.qth.net wrote:
> Subject: Re: [Elecraft] K3: CM500 vs. SB40
> Message-ID: <9A862635E05A4F9FA3EB35C7737539E3 at Toshiba>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>        reply-type=original
> 
> The SB-40, with its dynamic mic element, has a lot of bad
> reviews on Amazon regarding mic audio quality, so I never have
> tried it.
> 
> The Koss SB-45 on the other hand, with its electret element,
> sounds great, and is very comfortable and affordable. I prefer
> it over my Yamaha CM500 because it has a nice padded headband
> that doesn't abrade my bald head like the rough webbing on the
> CM500.
> 
> So how is the SB-40 working for you? Are you happy with the
> sound in the monitor, and with on the air reports?
> 
> Dave Hachadorian, K6LL
> Yuma, AZ
> 
> 
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