[Elecraft] Turn on turn off transients

[Guy Olinger K2AV]

Probably of more consequence in the powered speakers is that they all are
targeted at music use on PC's.  They are in tiny enclosures and have a huge
bass pre-emphasis to keep them from sounding "tinny".  The pre-emphasis
will increase with increasingly lower frequency, likely meaning that
something with components around 5-20 Hz at the amplitude of turn-on pops
is hugely emphasized.

73, Guy.

On Wed, May 2, 2012 at 12:02 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Those "thumps" may be bothersome for those using powered speakers, I am
> using unpowered speakers and while I hear ag the intensity couple of
> "thumps" at turn on and turn off, neither are offensive and bothersome.
> Perhaps you are increasing with your powered speakers
>
> Do your powered speakers run from the same power supply that you K3 is
> connected to?  If so, I would recommend a test made to determine if the
> computer D and CPU/memory is adequate to run that program,
>
> 73,
> Don W3FPR .
>
>  10:35 PM, Wayne Burdick wrote:
> > Randy Farmer wrote:
> >
> >> My K3 also "thumps" with power on and off transitions....
> > This is an important part of the power-on self-test sequence. It
> > allows you, and others, to verify even at some distance from the radio
> > that your speaker(s), KIO3 interconnections, large electrolytic
> > coupling capacitors, AF amp, DSP, and power supply are all functioning
> > properly.
> >
> > Wayne
> > N6KR
> >
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