As another ham who is deaf in one ear (although I was in my 50s when it
happened), I was wondering if I am out of luck when it comes to the dual
watch function of the KX2.
Bob, N7XY
On 7/26/16 3:50 PM, Don Wilhelm donw...@embarqmail.com [KX3] wrote:
Joe,
I suggest that you are looking at the wrong parameter. Audio folks have
not done "impedance matching" for a long time now.
You should be looking at the SPL ratings for the headphone instead -
that is an indicator of the sensitivity.
The audio amplifier output is a low impedance and will feed as much
power into the connected device (speaker or headphones) as it can take.
Consider a parallel - plugging a lamp into an AC mains receptacle.
The AC Mains receptacle is a low impedance source. If you plug in a 25
watt bulb, it will produce the light of a 25 watt bulb, but if you plug
in a 100 watt bulb, it will produce more light - same low impedance
driving source.
Just guessing here ---
Is it possible that your single headphone has a mono plug on it? If so,
it is shorting out one channel of the KX2 audio. Change it to a stereo
plug with the tip and ring connected together. (caution, wires in
headphones can be difficult to solder, some are nylon fiber wrapped
loosely with copper braid for flexibility).
Alternately, just use a regular set of headphones - yes, you will not
hear one side, but the audio should be better.
73,
Don W3FPR
On 7/26/2016 5:15 PM, kn2a2...@icloud.com [KX3] wrote:
>
> Hi all.
> I have SSD. Born deaf from my left ear.
> Can anyone recommend an affordable headphone that I can use with the
> KX2? I recently purchased a Stanton DJ Pro 300 headphone ( it only has
> one side). It seems that there is a impedance mismatch because I can't
> get a loud output when I use it. It works fine when connected to my
> iPhone or laptop.
> Any suggestions? I can probably cook up a impedance matching circuit
> or just buy a "normal " headphone and call it a day however I like the
> single headset concept.
> Any ideas or suggestions are appreciated.
> Thanks
> Joe KN2A
>
>
__._,_.___
------------------------------------------------------------------------
Posted by: Don Wilhelm <donw...@embarqmail.com>.
__,_._,___
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