[Elecraft] : K3 receiver noise questionable test results

[Julian, G4ILO]

Dunc Carter - W5DC wrote:
> 
> Is this for voice or cw reception?  The consonant sounds in voice, are 
> mainly contained in the 1600 to 3200 Hz range; rolling this range off is 
> likely to reduce voice readability.  Are there or will there be mode 
> dependent settings for the receive equalizer?  I've tried using an 
> external high/low/bandpass filter with the K3 on cw and it's not 
> beneficial for me but then my hearing is damaged with midrange loss and 
> distortion in one ear as a result of having meniere's disease.
> 

We're talking about SSB here but I also like the same kind of sound when
receiving CW with the filter wide open. The idea is not to make the audio
sound muffled and lose intelligibility. Personally I think the bass boost is
more important to improving the sound than the treble cut. But a lot depends
on what you are listening on. The K3 internal speaker has a lot more bass
than headphones or many external speakers. I can't fault the audio on the
internal speaker or on computer headphones plugged in round the back, using
the settings given below, but two pairs of hi-fi stereo headphones and some
external passive speakers (all of which probably 8 ohm impedance) are
lacking in bass and tiring to listen to. 

The settings I'm currently using are:
50Hz    +0
100Hz  +3
200Hz  +6
400Hz  +6
800Hz  +3
1600Hz +0
2400Hz -3
3200Hz -9

I do hope there will be mode dependent settings eventually because FM, in
particular, doesn't need equalization like this.

-----
Julian, G4ILO. K2 #392  K3 #222.
* G4ILO's Shack - http://www.g4ilo.com
* KComm - http://www.g4ilo.com/kcomm.html
* KTune - http://www.g4ilo.com/ktune.html

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