STEREO SPEAKER OUT

[Richard Thorpe]

When I attach my K3, using stereo speakers out, to a set of powered  
speakers  noticeable hum occurs.  Also the powered speakers have two  
inputs, just plugging the K3 in, even though the K3 is not turned  on  
reduces the output volume from the other source by half.  Am I doing  
something wrong?

R Thorpe KD6LAZ/AE
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[wayne burdick]

Richard,

The K3's external speaker output requires a stereo plug. Also set  
CONFIG:SPKRS to 2.

Hum pickup is a very common problem with some powered speakers,  
regardless of what they're used with. You may be able to fix it with  
different cabling, moving the DC adapter, etc.

I recommend using non-powered speakers with the K3. It has plenty of  
drive, and this eliminates a few variables caused by powered speakers.

The speakers I use are from Best Buy: "Insignia, 4-inch, 3-way  
surround speakers"; same as the KLH Model 970A or other similar  
models. They're very inexpensive and sound great. Size: about 4"W x  
8"H x 4"D.

73,
Wayne
N6KR

On Dec 17, 2009, at 12:30 PM, Richard Thorpe wrote:

> When I attach my K3, using stereo speakers out, to a set of powered
> speakers  noticeable hum occurs.  Also the powered speakers have two
> inputs, just plugging the K3 in, even though the K3 is not turned  on
> reduces the output volume from the other source by half.  Am I doing
> something wrong?
>
> R Thorpe KD6LAZ/AE
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

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[KARL MARDERIAN]

N6XVT,
I am in need to the answer to this question myself. Not for my K3, but  
for my stereo Amp.. No hum, loss of singal. In this case it is hooked  
up to a preamp out. If the other amp is not on it cuts the volume.  
Must have something to do with line loading.


Sent from my iPhone

On Dec 17, 2009, at 12:30 PM, Richard Thorpe <[hidden email]>  
wrote:

> When I attach my K3, using stereo speakers out, to a set of powered
> speakers  noticeable hum occurs.  Also the powered speakers have two
> inputs, just plugging the K3 in, even though the K3 is not turned  on
> reduces the output volume from the other source by half.  Am I doing
> something wrong?
>
> R Thorpe KD6LAZ/AE
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html

______________________________________________________________
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