[Elecraft] K3S audio board for K3 upgrade?

[lstavenhagen]

I use both the internal speaker and a set of Sony headphones (not comm.
style, but basic hi-fi, can't remember the model number offhand) on
primarily CW but on very rare occasions I'll go up to the SSB bands from
time to time for listening/entertainment purposes. I do own a microphone,
but I'm not sure where it is right now.

But speaking of SSB, I will say that SSB is where the difference from the K3
is most noticeable, even through the internal speaker. Not an order of
magnitude better, but noticeable. So for you voice ops it may be a more
worthy upgrade? Voices are definitely flatter and smoother sounding through
the K3S.

For casual listening and for comparison with my K3, I run the BW at 2.7khz
with the center at the stock 1.5khz (IIRC). As I noted above, it's in SSB
signals that I suppose there's a more noticeable difference but the regular
noise when operating CW still has approximately the same shrill quality on
both rigs (headphones and internal speaker). It's hard to quantify, but it's
just has that harsh, upper midrange kind of rasp that the K3 has as well.

For equalization, I've tried reducing the upper mids and boosting the lows
to emulate my K2, but it doesn't really replicate the K2 regardless of
settings. So I just leave those flat.

Finally, I should mention I do have some mild hearing damage from many years
as a musician, so I just may be more sensitive to heavy mids/upper mids
types of equalization than others. So again, just take my comments with a
grain of salt. Just because I can't hear much improvement doesn't mean there
isn't an improvement or that others won't benefit from it :).

73,
LS
W5QD

Jim Brown-10 wrote
> Do you listen on the internal speaker or on headphones? CW or SSB? Have 
> you used RX EQ to shape the tonal balance? How do you set the IF 
> bandwidth and centering? If headphones, which type/model? If external 
> speaker, which one?
> 
> I'm retired from a career in pro audio, including lots of live 
> recordings of acoustic jazz. My operating style is to use the speaker 
> only for casual monitoring when I'm doing something else in the shack, 
> and to help me tune in digital signals. I listen mostly on headphones, 
> both Yamaha CM500 and Sony MDR7506. The Sony headphones are widely used 
> in recording studios, and the sound of the CM500 is pretty close in 
> sound quality. I'm quite satisfied with the sound of my original K3s. I 
> don't use any RXEQ at all.
> 
> 73, Jim K9YC
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