[Elecraft] KX3 Transmit audio has (unwanted) echo effect

[Jim Kutsch, KY2D]

AS of a few days ago I started getting reports of poor transmit audio from
my KX3. Today I had time for more extensive tests with several stations.
According to these reports, the transmit audio sounds like I'm in an echo
chamber or there is a reverb in the audio path. Lower power, lower mic gain,
and 0 compression does not eliminate the effect.

 

Any suggestions? Might I have accidentally turned something on in the menus
to cause this condition? It's the same ElectroVoice RE15 mic I've been using
for months. The only (intentional) recent changes were installing the recent
betas.

Thanks for any thoughts.

 

73, Jim, KY2D