[Elecraft] K3s Line Out (stereo)

[Bob McGraw K4TAX]

I see no need for isolation transformers with headphones.  Likely the 
transformers is the reason the HP output won't drive a pair of 
headphones.   Isolation transformers?  Are they 3 winding hybrid 
transformers?    I've used them in professional audio installations but 
they are rare and expensive.

73

Bob, K4TAX


>
> On 1/15/2019 11:23 PM, K9MA wrote:
>> I found that the level at headphone output, at least the rear panel 
>> one, was too low to drive two pairs of headphones in parallel in my 
>> setup, which includes some isolation transformers. The speaker output 
>> works fine with the headphones. (Don't try this with super sensitive 
>> low impedance headphones.) I just wired a switch to an external speaker.
>>
>> 73,
>> Scott K9MA
>>
>> On 1/15/2019 20:51, Nr4c wrote:
>>> Why use Line Out for speakers. There is a perfectly good jack marked 
>>> Speakers right next to the Phones jack. Be sure and use a Stereo 
>>> plug but it is for ........wait for it.  Speakers!
>>
>>
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