[Elecraft] Pileup Mush (was:audio board)

[brian]

Won't argue with the experts.

However, I really wonder why one would not want a "brick wall" type 
earphone/speaker which greatly rejected anything outside the audio range 
of interest.  There is the issue of dynamics (e.g. 100 wpm CW) which 
probably needs some higher frequency response.

In the early 60's I had a set of high impedance earphones that had a 
mechanical resonance at about 400 Hz.  It was great for CW.  Zero 
beating was easy too.

The selectivity of RX's in those days wasn't much-- except if you were 
lucky to have a Q-multiplier.  The resonant earphones were welcome.

73 de Brian/K3KO

On 3/23/2016 16:18 PM, lstavenhagen wrote:
> Regarding headphones/speakers, the way I learnt it many years ago was that
> hi-fidelity transducers were generally a no-no in communications, primarily
> because frequency response and other distortions (if done correctly) aided
> in hearing desired signals.
> Of course, back then our receivers weren't even in the same ballpark as
> today's, with their audio processing/filtering capabilities and so forth, so
> I suppose it was more common to seek help by introducing distortions in the
> transducers themselves, like peaks in the frequency response that helped
> shape the signals.
>
> That said, I do use my "hifi" headphones with my K's; I haven't tried my
> aviation headset yet though. I'm tempted to give that a go soon as I can
> retrieve it from the hangar.
>
> But I wonder if hi-fi speakers and headphones aren't still being too
> faithful to what's actually going into them electrically? Even on
> top-of-the-line rigs like ours?
>
> 73,
> LS
> W5QD
>
>
>
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