We did this from PJ4A in the CQ WW CW contest using a passive splitter
pretty much as you describe. There were several headsets used before
and during the contest. It worked just fine.
The bigger problem is having two operators needing to access the front
panel of a small radio and, in our
On 6/1/14 at 7:45 AM, li...@subich.com (Joe Subich, W4TV) wrote:
On 2014-06-01 1:02 AM, Don Wilhelm wrote:
You should have no problems with paralleling 2 headphones on the
audio output of the K3, with no need for any external mixer.
I would not risk it. The K3 headphone amplifier is only
On 6/2/2014 11:03 AM, Bill Frantz wrote:
I had this problem when installing a FTM-10 in my Mazda Miata. I
placed the speakers in series so as not to overload the audio
amplifiers. The output level is somewhat marginal when traveling at
freeway speeds with the top down, but so is conversation
On 2014-06-01 1:02 AM, Don Wilhelm wrote:
You should have no problems with paralleling 2 headphones on the
audio output of the K3, with no need for any external mixer.
I would not risk it. The K3 headphone amplifier is only rated for
105 mW at 16 Ohms. Both power dissipation (heat) and
On 6/1/2014 7:45 AM, Joe Subich, W4TV wrote:
You should have no problems with paralleling 2 headphones on the
audio output of the K3, with no need for any external mixer.
I would not risk it. The K3 headphone amplifier is only rated for 105
mW at 16 Ohms.
I agree with Don that it's
On 2014-06-01 2:11 PM, Jim Brown wrote:
I agree with Don that it's perfectly fine to parallel two sets of
headphones on the output of a K3. The load impedance of most modern
headphones is much greater than 16 ohms.
You can't guarantee that with any two random headphones - my shack has
On 6/1/2014 11:29 AM, Joe Subich, W4TV wrote:
You can't guarantee that with any two random headphones - my shack has
headphones anywhere from 8 Ohms to 200 Ohms.
I would change that. Simple Ohms Law suggests that's a very bad idea,
for reasons noted in the next sentence.
Paralleling
I've used this headphone distribution amp, it has jacks and pots for four
listeners. $25.
http://www.amazon.com/Behringer-HA400-4-Channel-Stereo-Headphone/dp/B000KIPT30/
wunder
K6WRU
On Jun 1, 2014, at 11:29 AM, Joe Subich, W4TV li...@subich.com wrote:
On 2014-06-01 2:11 PM, Jim Brown
I got a 3-channel headphone volume booster at RS for $7.95 [IIRC].
Runs on 2 AA's, one gozinto, three gozoutofs. The audio on my KX1 and
K2 is too low for my compromised hearing.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org
On
On 2014-06-01 2:39 PM, Jim Brown wrote:
Paralleling headphones of with differing impedance and sensitivity
will result in one operator getting too much or too little audio
and may require gain high enough to result in excess distortion or
dissipation.
That may be true, and is the only
I want to have a second op listening to the sub rx on a separate pair of phones
(for 6m trophy, so same band). I've strung together 2 stereo sockets with one
fed from the right and the other from the left side of the front panel phone
output and this seems to works well. With the channels
Stew,
You should have no problems with paralleling 2 headphones on the audio
output of the K3, with no need for any external mixer. If there is a
significant difference in the response (SPL) of the two headphones, that
may present a volume problem, in which case, some secondary
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