Why does my volume go up and down on its own?
This can be caused by a conflict between the program or device that you are trying to watch and the TV's advanced audio settings specifically SRS TruVolume.
To turn this function off you would need to take the following steps:
Another option would be to turn any audio leveling options in your other devices off.
If you are using a Cable or Satellite box there is also an audio setting that you may need to change from HDMI Auto to HDMI Fixed.
Why is the background noise louder than the people talking?
This can be caused by having SRS TruSurround turned on.
To turn this function off you would need to take the following steps:
Why is my volume low even though I have it turned all the way up?
If you are using a cable or satellite box this could affect the audio to your TV. Please check the internal audio settings in your cable or satellite box to increase the volume.
If this does not resolve the issue or you are not using a cable or satellite box you may want to try turning off the SRS TruSurround and the SRS TruVolume settings inside the Audio Settings.
Note: There are features within the TV such as enabling the audio settings "SRS" which will help improve the fluctuations, but will not resolve them entirely (see below for reason)
Here is a link to an article explaining why commercials are louder than normal broadcast programs:
"The Federal Communications Commission does not specifically regulate the volume of TV programs or TV commercials. However, broadcasters are required to have equipment that limits the peak power they can use to send out their audio and video signals. That means the loudest TV commercial will never be any louder than the loudest part of any TV program.
A TV program has a mix of audio levels. There are loud parts and soft parts. Nuance is used to build the dramatic effect.
Most advertisers don’t want nuance. They want to grab your attention. To do that, the audio track is electronically processed to make every part of it as loud as possible within legal limits. “Nothing is allowed to be subtle,” says Brian Dooley, Editor-At-Large for CNET.com. “Everything is loud – the voices, the music and the sound effects.”
Spencer Critchley, writing in Digital Audio last month, explained it this way: “The peak levels of commercials are no higher than the peak levels of program content. But the average level is way, way higher, and that’s the level your ears care about. If someone sets off a camera flash every now and then it’s one thing; if they aim a steady spot light into your eyes it’s another, even if the peak brightness is no higher.”