[Elecraft] Problem with K3 receive audio

[Joe Subich, W4TV]

> At first, I thought there was something in a menu setting or a
> control I wasusing incorrectly that wasn't allowing me to add more
> "lows" (if that's what you call it) that was causing the problem, but
> that wasn't the case.I called Elecraft and talk to people about
 > it, but no cause could be found. I kept it for about two months
 > then sold it.

There have been changes to the DSP board to allow more lows (remove
a low frequency roll off) with low impedance headphones and a high
cut filter has been added to remove noise from the digital to analog
converter above 4.5 KHz.  Those changes may help your perception of
the receiver audio but I believe what you were hearing was the flat
response of the K3.

Unlike just about any other receiver I've tested, the K3 has an
absolutely flat response 100 Hz to 4 KHz other than ripple in the
first IF ("roofing") filter.  Other receivers show a pronounced
roll-off starting between 1000 and 1500 Hz - between 3 and 6 dB
per octave.

> Does anyone remember experiencing something similar with your K3 or
> heard about a possible solution?

It is quite easy to create that "warm" sound with the K3.  Simply
use the RX EQ to duplicate the roll-off you are used to hearing.
Setting 1600 Hz to -3, 2400 Hz to -5 and 3200 Hz to -6 "warms up"
the receive audio nicely.  Use -6/-10/-12 if you want an even more
"mellow" sound.

73,

    ... Joe, W4TV


On 4/9/2011 12:49 PM, Tom Stone wrote:
> I owned and assembled a K3/100 about two years ago and was impressed with
> the high quality of the radio, its design and support from other owners and
> Elecraft.
>
> Everything about it worked fine except that it seemed that I could never
> quite adjust the sound of a person on SSB to the point where it was a
> pleasant, (what I call)
>
> "mellow", armchair-type copy. It seemed too shrill, it had a "high edge" to
> it that couldn't be adjusted out.
>
>
>
> At first, I thought there was something in a menu setting or a control I was
> using incorrectly that wasn't allowing me to add more "lows" (if that's what
> you call it) that was
>
> causing the problem, but that wasn't the case. I called Elecraft and talk to
> people about it, but no cause could be found.  I kept it for about two
> months then sold it.
>
>
>
> Years have gone by and I am still very impressed with the quality of your
> product and company and would like to put together an "Elecraft Shack".  I
> am wondering if the
>
> changes that have taken place over the past few years in the programming of
> the K3 might have solved the "problem" I experienced a few years ago or
> maybe it is just
>
> my level of hearing that is the problem.
>
>
>
> Does anyone remember experiencing something similar with your K3 or heard
> about a possible solution?
>
>
>
> Thanks for any info you could provide.
>
>
>
> 73
>
>
>
> Tom
>
> N3XQ
>
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