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Author Topic: PC Headsets  (Read 886 times)
9H1FQ
Member

Posts: 144




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« on: April 21, 2012, 12:07:04 AM »

I have a Lexma X255 headset, works excellent on a PC. I want to fit it onmy transciever, but I am puzzled with the mic connection. It has the usual 3.5mm jack, with a tip, ring & sleeve. The connection to the PC soundcard input is indicating that both the 4.5 volts supply and the audio output are coming from the tip. When tried to feed it this way, with a 10uf dc blocking capacitor, it did not work. Anyone can help please. Thanks
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N4NYY
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Posts: 4802




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« Reply #1 on: April 21, 2012, 06:11:18 AM »

If that headset has a electret mic, then that is shadow voltage for the preamp in the element, and is needed for the mic to work.
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G8JNJ
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Posts: 493


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« Reply #2 on: April 21, 2012, 07:12:33 AM »

Hi,

See this document for some ideas.

http://g8jnj.webs.com/Boom%20headset.pdf

Regards,

Martin - G8JNJ

ww.g8jnj.webs.com
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