Its doubtful they can pick up much if any airborn sound however they do pickup vibration so ensure your giant subwoofer isnt pounding away nearby, otherwise, happy listening!
They can hear some sounds and some of them feel the vibrations.
There have been several threads on this already on this forum...so if you do a search for them and can't find them, let me know.
Nighttime is something to think about with the telly though, some chams will get disturbed by lighting, even the telly at night, others dont care much, see how yours reacts, they need shuteye too.