[Elecraft] K3 CW Sound Wave Canceling

[Jim Brown]

On Thu, 27 Nov 2008 10:09:10 -0800 (PST), John W2XS wrote:

>Maybe it is not a good idea to have the speakers too far away 
from 
>each other.

Yes, it's a speed of sound issue, and the algebraic addition of 
sound waves that are arriving at your ears at different times. 
This may help you understand what is going on. 

http://audiosystemsgroup.com/AES-StereoASGWeb.pdf

Study the parts about human perception of sound, time issues, and 
the directivity of human hearing.

The best way to set up speakers for the K3 if you're listening two 
two channels (that is, diversity, or two RXs on two different 
frequencies) is with one speaker on your left so that your head 
blocks it to your right ear, and the other on your right so that 
your head blocks it to your left ear. This minimizes the 
destructive cancellations and maximizes your ability to 
discriminate which is which. 

Note also that the K3 plays some games with delay in DSP, which 
can also complicate things. Add to that that the two RXs are NOT 
precisely SYCNHRONIZED in diversity mode, which adds a beat of a 
Hz or so between the left and the right ears that is MADDENING!  

Wayne -- is there a tweak for this?   

73,

Jim Brown K9YC