[Elecraft] K3: CM500 vs. SB40

Bob McGraw K4TAX rmcgraw at blomand.net
Wed Mar 21 08:47:55 EDT 2018


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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