[Elecraft] annoying resonance with internal speaker in K3

[Phil & Debbie Salas]

"... It's a little more subtle than a continuous buzzing along with the 
tones of CW. Sort of a scratchy sound.  I thought it was in the audio, but 
no, it's gone when I use headphones
or an external speaker..."

I had this same problem on my K3.  Headphones and an external speaker both 
sounded good.  It turns out that the K3 speaker was bad.  Take your cover 
loose and hold it above the K3 while still listening to the speaker.  If it 
is still buzzy/scratchy, then the speaker is bad.  Elecraft replaced the 
speaker and everything sounds great.

Phil - AD5X