Re: K3 Audio

Posted by Joe Subich, W4TV-4 on Oct 19, 2017; 11:52am
URL: http://elecraft.85.s1.nabble.com/K3-Audio-tp7635215p7635225.html


 >      Shift -        1.25
 >      Width -        2.7

This places the lower cutoff at DC!  It is very wasteful and susceptible
to significant hum/buzz.  Far better to use FL=0.30 and FH=3.00 for a
bandwidth of 3 KHz and reduce FH as needed based on QRM.

 >      RX EQ           1        -2
 >                      2         0
 >                      3        +9
 >                      4        +12
 >                      5        +11
 >                      6        +14
 >                      7        +7
 >                      8        -16

Wayne and Lyle have repeatedly warned against using excessive boost in
RXEQ.  One would be far better to reduce all values by 10 to 12 dB as
this will help prevent over driving the audio amplifiers, etc.

This has the same characteristic without the issues of over driving the
audio amplifier.

       RX EQ           1        -16
                       2        -12
                       3        -3
                       4         0
                       5         0
                       6        +2
                       7        -5
                       8        -16

73,

    ... Joe, W4TV


On 10/19/2017 6:25 AM, Bill wrote:

> Once again the good/bad/indifferent K3 audio surfaces. I do not get it -
> never have. The K3 is so audio customizable that it should be pleasing
> to nearly every user (I say nearly, as there are some whom will never be
> happy). To make a long story short, here is link to my current settings.
> Of course, they are my settings and may not please everyone.
>
> ****
>
> **The following are the settings I am /_currently_/ using on 40, 75, 160
> for armchair copy (meaning very reduced hiss, no ANF warbling, and
> pleasing listening). My RX audio goes through amplified Behringer studio
> speakers with bass/treble adjustments.
> **
>
> **
>
> Note: I often make RX Eq changes depending upon mood, attitude, boredom,
> and allergies/colds - as needed.
>
> The speaker adjustments:  bass and treble both set to the middle notch
>
> K3 settings:
>
>   (Config Menu):
>      AGC DCY -    NORM
>      AGC HLD -   0
>      AGC PLS -    NORM
>      AGC SLP -    4 to 6 (low setting reduces artifacts from the
> Automatic Notch Filter)
>      AGC THR -   12
>      AGC F -        120
>      AGC S -        20
>      Shift -          1.25
>      Width -        2.7
>   (front panel):
>      RF Gain -     90 (sometimes less)
>      ATT -           ON
>   (Menu):
>      RX EQ           1        -2
>                           2        0
>                           3        +9
>                           4        +12
>                           5        +11
>                           6        +14
>                           7        +7
>                           8        -16
>
> Be sure to read the "Noisy K3" section on http://www.w3fpr.com/ -
> excellent information!
>
> The disclaimer:  Your mileage for the above settings may (will) vary -
> depending upon speaker selection, personal preferences, and your hearing
> acuity.
>
> Note:  I made all of my settings by hand, using the K3 menus - thus
> affording instant gratification. I used to do all the EQ stuff with
> outboard devices. With the advent of my K3, all those devices took a
> one-way ride to a hamfest.
>
> Bill W2BLC
>
> **
>
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