Re: K3 DSP AGC Question

Posted by Mike K2MK on Feb 08, 2010; 7:40pm
URL: http://elecraft.85.s1.nabble.com/K3-in-a-cw-pileup-needs-work-tp4523884p4536595.html

Hi Lyle:

I was very disappointed to read your post. I purchased a Proset headset directly from Elecraft when I bought my K3. According to Heil this headset has an impedance of 200 ohms. Is that why I have to plug my headphones into the rear speaker jack to get sufficient audio output from them? Why would you folks sell a headset that does not complement the K3? I am really disappointed.

Mike K2MK


>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