[Elecraft] Audio

[WB4X (Brent Sutphin)]

I have K2 #2571. It has always worked very well with the KSB2, KNB2, =
KAF2 and KAT2 options installed.  Recently I installed the revision A to =
B upgrades. I didn't notice any problems after the upgrades. Last =
weekend I installed the KIO2 option.  It also works just as it is =
supposed to.  The problem I am having is that now if I turn up the =
volume to a medium level the audio gets really distorted.  It is more =
noticeable while coping cw.  The distortion seems to occur right at the =
cw note frequency (600hz). If I tune off frequency slightly it seems to =
get better.  Anybody have any ideas?

Brent
WB4X  

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