[Elecraft] K3s Line Out (stereo)

[Walter Underwood]

When I need to drive two sets of headphones, I use a $25 Behringer HA400 headphone distribution amp.

https://www.amazon.com/Behringer-HA400-Ultra-Compact-4-Channel-Headphone/dp/B000KIPT30

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Jan 16, 2019, at 7:36 AM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> 
> The K3/K3S Line Out already has isolation transformers internal to the K3.  I do not understand any need to put additional transformers in the audio path(s).
> 
> What happens if you cable to LINE OUT signals to a computer soundcard (with both left and right channels - some only are one channel if the input is set for MIC)?  You should hear the main RX in the left channel and the SubRX in the right.
> 
> Your external transformers/cabling raises the question of "is it the K3S or is it your external devices that are causing the problem".
> 
> Time to strip everything down to the essentials and begin to determine where the "failure" is occurring.  Test one thing at a time.
> 
> 73,
> Don W3FPR
> 
> On 1/15/2019 8:00 PM, Dave Sublette wrote:
>> My K3s arrived over the weekend and I have been setting it up. I am using
>> the rear Audio jacks to drive either headphones, or the Line out to drive
>> an amplifier and two speakers in the stereo mode.
>> The headphone jack has stereo output ok.  But the line out only has right
>> channel audio.  Left channel has nothing but a low hum.
>> I am testing them one at a time, using the same cable. So it is not a case
>> of a bad cable.  The plug inserts to the same depth in both the headphone
>> and line out jacks, so I believe the plug is properly inserted,
>> I have been through both the Main Menu and Config menus, item by item.  I
>> see nothing that would give the option to turn off the left channel of the
>> line out.
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