[Elecraft] K3s Hearing low level rear speaker audio with SPKR+PH no and low AF set

[KK1W]

You might try tapping "1" when in CONFIG>SPKR+PH to display 
"PH.R SW-". That fixed mine so that when SPKR+PH was YES, 
plugging the phones in the REAR phone jack caused the 
external speakers to be muted. If the PH.R+ was selected, 
the speakers did NOT mute when the phones were plugged into 
the Rear Panel, but did mute when thephones were plugged 
into the Front Panel.

73,
Ken K3IU
K3s #10691
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Thanks for the tip Ken. Unfortunately that was already set to PH.R SW-.
Changing it to + definitely didn't mute the speakers!

The issue we're seeing is the speakers are not completely muted. You can
still hear audio coming out of the speakers, nowhere near as loud, but it's
still there. Unlike the built in speaker which is completely muted under the
same circumstances.

You did prompt me to try a regular speaker in the SPKRS jack
(non-amplified). Interestingly there is NO audio heard when SPKR+PH = YES.
This leads me to believe there is 'some' audio at the jack, enough to be
amplified. Why, that I can't answer, maybe something to do with input
impedance of the amplified speakers?

Anyway, just another data point in something that's not a big issue but
makes for good discussion.

Jim/KK1W




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