Question about Sennheiser RS 120 Consumer Headphones

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Sennheiser Wireless Headphone Stops transmitting signal

I have my headphones on with the transmitter plugged into my computer. It works for approximately 15 minutes before the transmitter stops transmitting a signal, the green light (on/off) goes blank and all i hear is a loud static sound.

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  • gwnorowski Jan 19, 2009

    Identical problem. Is there a solution?

  • gnewman313 Jan 29, 2009

    Same problem but only about 10 minutes. Unplugging from the sound source solves it each time, but only for a few minutes.

  • celuisansnom Feb 23, 2009

    same as above: works fine for 10-15 minutes then loud static.

  • flassi
    flassi Mar 03, 2013

    I have same problem but only when sound is not very loud... if I put more volume its fine... Annoing think

  • Anonymous Mar 26, 2014

    Sennhieser headphones rs110 series. Headphones work great however for no apparent reason the transmitter will power off for anywhere from 5 to 45 minutes. When it comes back on it may stay on for several hours and then simply turn itself off. When it does come back on it will stay on for 5 minutes to several hours or only 5 to 10 minutes. Any ideas from anyone would be greatly appreciated since when the trans unit goes off the static is ear shattering.

  • Joe Norman
    Joe Norman May 15, 2016

    After reading this response and another that said check the connection of the transmitter (I had tried everything else - connections, volume) I unplugged the base signal cable and simply plugged it back in AND IT WORKED. No explanation why it happened in the first place - I have no kids, no pets, I went to bed one night and it was working - turned everything on the next day and the headphones weren't working. NOW THEY WORK. Base connection wasn't loose - I jus unplugged it and plugged it in again. GOOD LUCK!!! Joe


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I had the same problem when I plugged it into a new HDTV. The problem was that the sound on the TV was set too low. The transmitter has a feature that automatically turns off when the signal is off or too low. Try turning up the TV volume to a high/higher level and it should solve your problem. Using the headphone jack with the white input allows you to use the headphones while bypassing the TV speakers.

Posted on May 02, 2009

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Unfortunately these headphones have a “feature” that shuts them off after a set amount of time has passed. If no audio signal is detected.. after x number of minutes.. off they go.

A great feature for extending battery life.. a poor feature when using with sources that often have long pauses between signal output.. like using with a PC.. Often when listening to music while working on a document.. the music ends.. and a long pause ensues.. and the headphones turn off.

You need to turn them on and off again when you are sure an active audio signal is being sent to the base unit.

There is no workaround..

Since your problem doesn’t state they quit working during listening.. the above answer is all I have for now.

Other obvious things to check.. batteries.. and connections.. especially the connection on the base unit.

Best of luck

Posted on Apr 24, 2009

  • colt_cobery Aug 12, 2011

    This is exactly the same problem that I have right now... it was driving me crazy... well at least I know where I stand... thank you.


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I can't believe anyone would design a pair of headphones with an "automatic switch off" without giving the option to turn the "automatic switch off" off.

Posted on Jun 18, 2010

  • colt_cobery Aug 12, 2011

    I am thinking about contacting the company if I cannot get a workaround... my wife bought two pairs of these headphones as a birthday gift to me to help me study, and the delay is an absolute nightmare... I basically have gotten that ringing in my ear about 4 times when the loud static comes on... It is insane.


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If you're using a mac, I've made an instructable on how to make this a little more bearable..

I'm sure there is a way of doing it for a pc using a batch file or something but I'm not too up on my pc programming anymore..

Hope it helps..


Posted on Jan 18, 2011

  • dobbler31 Jan 18, 2011

    Whoa, just realised this was posted 2 years ago.. better late than never?


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1 Answer

Work fine for about 5 minutes than change to static

There's an auto-shutoff feature which kicks in when the audio input to the transmitter is too low. That's usually indicated by the green light on the transmitter turning off. Just increase the volume on the device connected to the transmitter, and you should see the green light come back on. As long as that's on, it'll stay transmitting and shouldn't just cut out to static.

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Set up the transmitter. Wireless headphones rely on a transmitter that sends audio via infrared or radio waves to your headset. Use the digital audio output (coaxial or optical), RCA outputs (red and white) or headphone jack on your TV to connect the transmitter. The connection will depend upon which outputs are available on your TV and/or the transmitter.
Use an RCA-to-headphone adapter. If you don't have a headphone jack on your TV and the transmitter includes only a headphone connection, connect an RCA-to-female headphone connector. This will allow you to plug the wireless transmitter into the female headphone end and then hook the RCA ends into your television's audio outputs. You may also need a 3.5 mm (mini jack)-to-1/4-inch adapter if the headphone plug on the transmitter doesn't match the television jack.
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Set the transmitter on top of, or next to, the television. For infrared transmitters, you'll need a direct path between the headphones and the transmitter. Placing the transmitter on or near the TV will allow you to take advantage of the clear path you already have.
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If you are getting a signal the green light should be lit.

If only the red lamp is lit the headphones are not getting a signal.

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I have the same model as you. I have two transmitters and three headphones actually. Please see below:

Plug in the transmitting unit into a good working power outlet. Make sure you have the audio connected to a loud source. Turn on the source device producing the loud audio to be transmitted to your headphones. Now see if the transmitting unit's LED light is on. Check headphones for audio. (May have to tune in the headphones and adjust its volume as well).
I recommend that the source of your audio have its built-in speakers off, while still providing audio out to your transmitting unit, via an external audio output. Check your source manual or look for audio jacks on the front or back. There may be a setting to turn this on and for the main built-in speakers to be turned off as well.

If this does not work, unplug the transmitting unit, and then plug it back in again, after waiting for about 10 seconds - all while audio is being provided to the unit. It should come on.

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