why do my ear phones not work with properly tv?

donnajunkie

i was looking into getting some new earphones with noise cancelling but then remembered i have a pair already. i tried them with my phone and they worked well. however when i connected them to an extension and to the tv there was a lot of hissing and the volume was low. the model of my earphones is sony mdr-xb50ap. i was thinking of getting sennheiser cx300 earphones but am now worried they might not work either with the tv.

flashg67

This might sound obvious but have you pushed the plug into the TV fully? Mine sometimes feels pushed in but needs an extra shove until it clicks.
Also, have you tried without the extension in case that's the problem?

donnajunkie

flashg67 wrote: »

This might sound obvious but have you pushed the plug into the TV fully? Mine sometimes feels pushed in but needs an extra shove until it clicks.
Also, have you tried without the extension in case that's the problem?

i did try but i will have another try tonight. i dont think that is the issue though. and the extension does work with other headphones but they dont noise cancel.

googler

Do you get the same hissing with a conventional pair of earphones?

donnajunkie

googler wrote: »

Do you get the same hissing with a conventional pair of earphones?

No, the other headphones sound ok connected to the tv and the earphones themselves sound ok connected to my phone. I am just wondering whether certain in ear phones have a technical limitation that means they can't cope with the type of sound modern TVs give out. If that were the case I would need to know exactly what to look out for before buying a new pair. Don't want to find I have the same problem and as a result the money is wasted. I would just go for over the ear noise cancelling headphones but they all seem to be out of my price range. How can anyone justify charging £100+, £200+ for headphones. The sennheiser cx300 are only £24.99 so I would get them if I could be sure they will work with the tv.

TadleyBaggie

Sounds line you have plugged the headphones into a "line out" socket, not a proper headphone socket which would have a much higher output.

coffeehound

Your Sonys are 40 ohms impedance which is quite low and would exacerbate the problem mentioned above. Your other phones that work better are probably higher impedance.

Edit: nope I've got that the wrong way around. 40 ohms is higher for headphones and *lower* impedance would work better with a weak signal.

https://www.turntablelab.com/pages/headphone-buying-guide-what-is-headphone-impedance

donnajunkie

coffeehound wrote: »

Your Sonys are 40 ohms impedance which is quite low and would exacerbate the problem mentioned above. Your other phones that work better are probably higher impedance.

Edit: nope I've got that the wrong way around. 40 ohms is higher for headphones and *lower* impedance would work better with a weak signal.

https://www.turntablelab.com/pages/headphone-buying-guide-what-is-headphone-impedance

My Sony in ear phones are 40 ohms at 1 kHz. Does this explain the issue? The sennheiser in ear phones are 18 ohms, does this mean they will work or won't work with the tv?

donnajunkie

TadleyBaggie wrote: »

Sounds line you have plugged the headphones into a "line out" socket, not a proper headphone socket which would have a much higher output.

No, it is called head phone socket. So definitely for headphones.

donnajunkie

Just tried the sony again. It was during a trial on I'm a celeb. I notice the sound kept going up and down by itself and that the dramatic music was louder than all other sound in the clip, talking etc. And all connections were firmly fitted into the sockets for sure.

coffeehound

donnajunkie wrote: »

My Sony in ear phones are 40 ohms at 1 kHz. Does this explain the issue? The sennheiser in ear phones are 18 ohms, does this mean they will work or won't work with the tv?

It might explain it. That article says that lower impedance phones will be louder. Though actually with the things you describe in your previous post, it might also involve a dodgy connection in the line somewhere as someone suggested earlier.