Speaker jack

[Jeremiah McCarthy]

This speaker jack problem applies only to basic K-2's...I assumed that Dohn was talking about a basic K-2...The basic K-2 cover is not installed in a KPA-100 so the external speaker jack cannot cause a problem...I always use the external speaker jack to obtain output to the computer sound card when aligning the filters with Spectrogram...This is how I discovered that the new style jacks were different from the old ones...When an external speaker (or a cable to your computer) is plugged into one of these new speaker jacks, the internal speaker goes mute and there is no output to the computer...Reversing the "AF" and "SP" connections at the jack (page 79) corrects it...

Jerry, wa2dkg



>>I have encountered several of these "faulty" jacks...If the jack has a 7/16" hex nut to attach it to the panel, it is a new jack in the >>Elecraft world and it is internally wire in reverse to the originals, which had a knurled thumb screw type nut...The fix is >>simple...Referring to page 79 in the manual, reverse the positions of wires "AF" and "SP"...

>>Jerry, wa2dkg
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[n8ewy]

I kind of figured that.  However, I think the problem lies in the front
headphone jack anyway.  At least I can receive some audio for now by wearing
my headphones.  If I unplug them though, there is no audio through the
speaker.  

I think a swap out of the headphone jack is going to solve the problem.
Then it will be on to the rear one <grin>  Truth is, the rear "ext spkr"
jack looks to be of fairly good quality.

Dohn N8EWY

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Jeremiah McCarthy
Sent: Sunday, February 11, 2007 10:54 AM
To: [hidden email]
Subject: [Elecraft] Speaker jack

This speaker jack problem applies only to basic K-2's...I assumed that Dohn
was talking about a basic K-2...The basic K-2 cover is not installed in a
KPA-100 so the external speaker jack cannot cause a problem...I always use
the external speaker jack to obtain output to the computer sound card when
aligning the filters with Spectrogram...This is how I discovered that the
new style jacks were different from the old ones...When an external speaker
(or a cable to your computer) is plugged into one of these new speaker
jacks, the internal speaker goes mute and there is no output to the
computer...Reversing the "AF" and "SP" connections at the jack (page 79)
corrects it...

Jerry, wa2dkg



>>I have encountered several of these "faulty" jacks...If the jack has a
7/16" hex nut to attach it to the panel, it is a new jack in the >>Elecraft
world and it is internally wire in reverse to the originals, which had a
knurled thumb screw type nut...The fix is >>simple...Referring to page 79 in
the manual, reverse the positions of wires "AF" and "SP"...

>>Jerry, wa2dkg
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[Geoffrey Mackenzie-Kennedy-2]

Jerry,

I could be wrong but I think Dohn's problem is due to a faulty switch in the
headphone jack which if stuck 'open' prevents audio getting to the speaker
circuits.

 73

Geoff
GM4ESD

----- Original Message -----
From: "Jeremiah McCarthy" <[hidden email]>
To: <[hidden email]>
Sent: Sunday, February 11, 2007 3:53 PM
Subject: [Elecraft] Speaker jack

> This speaker jack problem applies only to basic K-2's...I assumed that
> Dohn was talking about a basic K-2...The basic K-2 cover is not installed
> in a KPA-100 so the external speaker jack cannot cause a problem...I
> always use the external speaker jack to obtain output to the computer
> sound card when aligning the filters with Spectrogram...This is how I
> discovered that the new style jacks were different from the old
> ones...When an external speaker (or a cable to your computer) is plugged
> into one of these new speaker jacks, the internal speaker goes mute and
> there is no output to the computer...Reversing the "AF" and "SP"
> connections at the jack (page 79) corrects it...
>
> Jerry, wa2dkg
>

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