[Elecraft] K3 Switches Number of Speakers

[Mike Cox]

My k3s occasionally does this too. I finally isolated the problem 
initiator as a burst of very loud signals, such as occurs when listening 
to a very weak DX station when a very strong (speaker rattling) station 
plops on top of him followed by the loud frequency cops. The Sub Rx must 
be is on and the volume for Main Rx is cranked up for the weak station. 
A single loud signal does not appear to initiate the SPKRS parameter 
change. It appears to only happen with multiple loud signals in the 
passband. These signals will be loud enough that I turn down the volume 
very quickly. During this loud outburst, the SPKR config will change to 
"1". I have set up a macro button to toggle the SPKRS configuration so 
that I can quickly return it to "2". If I turn the volume down a bit, it 
doesn't do this so I'm wondering if there's some "safety" mechanism 
built into the audio driver control circuit/firmware. Is it due to 
mixing of close frequency audio signals in a non-linear audio amp 
(clipping mode) producing sub-audible products? I don't know, it's just 
a thought. It's only an occasional annoyance for me so I've never 
pursued a cure.

My AF LIM parameter is currently set at 30 but I seldom have AGC off. It 
does it with AF GAIN "HI" or "LO" but if the gain is set "LO", I must 
turn the volume knob up more to compensate so I end up listening at the 
same relative audio levels. I'm running LP Bridge and at least one 
logging program and a K-Pod but have no other macros that directly deal 
with the SPKRS parameters. My sub Rx card is an older version retrieved 
from my original K3.

A cure or a work-around would be nice,

Mike, AB9V


On 1/30/2018 11:21 AM, Chester Latawiec wrote:
> My old K3 occasionally switches from 2 speakers to 1 speaker (makes it really tough to listen split chasing DX)!
>
>
> Any ideas what may be causing this?
>
>
> 73
>
> Chet VE3CFK
>
>
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