> On Sun, 6 Sep 2009 18:42:31 -0700, Dick Dievendorff wrote:
>
>> I just tried out my new Yamaha CM500 as well.
>
> Several of the guys in our contest club have bought these headsets
> and fired them up with their K3s. One of them, W6XU, brought one to
> our meeting last night, and I tried it on. It is quite comfortable,
> and well built. The headphones are of the "big closed" type that
> provide some isolation from noise in the shack. They are NOT active,
> noise-cancelling type.
> The mic is a cardioid electret.
>
> Another of the guys, K6TD, had me listen to his on the air. It
> sounded very good with no tweaking of the K3, and with tweaking,
> produced very competitive audio. The tweaking consisted of using
> maximum cut on the three lowest filters, 6dB boost at 2.4 kHz, and
> 10 dB boost at 3.2 kHz. I also had him kick in about 10dB of
> processing. This eq is consistent with most mics designed for SSB
> communications use (like the Shure and Heil products). The
> difference is that this headset sells for only $45 online at Sam Ash
> with free shipping, a bit more at other vendors. For those who don't
> know, Yamaha is a well respected audio company.
>
> 73,
>
> Jim Brown K9YC
>
>
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