[Elecraft] K3 DSP AGC Question

[ab2tc]

Hi, I use the 200 ohm Heil proset and even with the AF gain set to "LO" I
have no problem getting enough audio or distortion free audio. Either there
is a number of defective prosets or K3s out there because this is making no
sense at all.

Knut - AB2TC


Grant Youngman wrote:
> 
> 
> <snip>
> There are two factors here.  One is impedance.  (The impedance actually
> presented by a headphone is frequency dependent and can vary widely from
> the "nominal" value).  The other is sensitivity.  
> 
> I regularly use 250 ohm headphones on the K3 with no issues whatsoever. 
> Why?  They require very little drive to reach an acceptable output level. 
> So even given their relatively high Z (compared to 32 ohms)  it isn't
> necessary to drive the output stage of the K3 into clipping or high
> distortion levels to get plenty of good audio.
> <snip>
> Grant/NQ5T
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