[Elecraft] K3 AFX, etc...

[Don Rasmussen]

I enjoy the flexibility of the K3 audio system. I use
the AFX stereo setup in non-stereo mode. 

Setup K3 for 2 speakers, place an MS4 or equivalent on
top of a floor mounted Sounds Sweet speaker. 

The MS4 handles the sharp CW notes, the Sounds Sweet
provides rich audio on phone modes,
and it's all automatic with no external audio
amplification. 

A little Rx-Eq is icing on the cake. 

I used to need to use amplified computer speakers to
get a similar effect, it was never
as good and always hard to keep RF out of the speaker
wires. 

Highly recommended and imo -far- exceeds the audio
coming from the K3/PCSDR setup. 
 

[Elecraft] Audio artifacts
Lyle Johnson kk7p at wavecable.com 
Fri Jun 20 17:02:20 EDT 2008 

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> 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