[Elecraft] Audio artifacts

[Lyle Johnson]

> It's the first time I've noticed this problem.  I assume Lyle that you are
> not suggesting that it's a by-product of using the AFX, because I use AFX
> all the time and had not noticed it before.  I don't have the settings for
> SPKR+PH _and_ SPKRS=1 on.

AFX provides a delay between the two channels. If the channels are then 
summed, there will be peaks and nulls depending on the pitch.  The same 
thing happens if you have two speakers in a room with hard walls and no 
draperies.  It is not distortion, it is combining signals that are no 
longer in phase due to the intentionally introduced delay.

73,

Lyle KK7P