Re: K3 DSP AGC Question

Posted by Mike Reublin on Feb 08, 2010; 8:03pm
URL: http://elecraft.85.s1.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4536972.html

The Yamaha CM-500, recommended by quite a few here, is 120 ohms, right?
So cranking up the AF results is less than optimum operation?

73,
Mike, NF4L

Lyle Johnson wrote:

>> There IS something entirely separate with the headphone audio and HI-Z
>> headsets, high volume levels, maybe a sharp saturation point, and
>> mush, just haven't nailed it yet.
>>    
>
> Note that the headphone audio path of the K3 is designed for 32-ohm and
> lower headphone impedances.  Higher impedance phones provide less audio
> for a given transducer efficiency.  Cranking up the AF gain to
> compensate can lead to clipping-related distortion.
>
> 73,
>
> Lyle KK7P
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