Which setting in tv sound menu will give best results?

If you are connecting the soundbar to your TV with the digital audio cable, make sure to select "D IN" using the source button on the soundbar. Bluetooth (BT) is a separate source from another device. (phone, etc.) The TV will need to be set to use the digital audio output and probably PCM format. (?) The subwoofer is preconfigured at the factory to mate up with your soundbar. (See below instructions - your soundbar includes the amplifier:)

Digital audio output setting:
After connecting an amplifier with digital audio input and
external speakers as shown, you should set an audio
output format compatible with the programme you are
watching or the device connected.
Go to "HOME" > "TV Menu" > "Setup" > "Option" >
"Terminal setting" > "Digital audio output" > select
"PCM" or "Bitstream".
NOTE
• When set to "Bitstream", Dolby Digital is output when the Dolby
Digital or Dolby Digital Plus audio formats are received. When
set to "PCM", PCM is output no matter what audio formats are
received.
• When set to "Bitstream", HE-AAC audio formats can be output
as Dolby Digital.

You don't. You change the signal at the source device end, not the TV.

If you have connected a Blu-ray player or a games console, then set the device audio option to Bitstream. This will send a data stream to the TV that it will decode either as Dolby or DTS depending on the source signal format.

Dolby Digital is only an option for an external AV source connected via HDMI. That's the only way to get a Bitstream signal in to the TV. The TV's internal tuner is only capable of PCM audio. It's a DVB-T tuner (standard definition) rather than the DVB-T2 tuner needed for HD. Even then, only the HD channels are encoded in DD.

Iff your BD player or console is decoding to stereo PCM, then it's doing the same job as the TV. There's a small advantage with one of the audio processing modes in how it limits the dynamic range, but other than that PCM and DD will sound identical. This is especially the case with any TV that has no optical audio out, as in this case. The TV can't pass a DD signal out to an external audio system. So all sound is played via the internal speakers or headphone jack. It'll all sound the same, PCM or DD.

If playing direct in to the TV, make sure the player's audio menu is set to "mixdown to PCM" or just PCM rather than Bitstream. The reason is that most Blu-rays contain audio in DTS format. But very few TVs can handle the raw Bitstreams DTS data feed. Let the player do the conversion to an audio format that the TV understands. PCM is pretty universal. It'll be just stereo, but that's okay because your TV probably can't do much more than that anyway.

I can't speak on whether or not the apple tv has such a setting but the Bluray players does. You go into the bluray player's settings and change the audio output.Your choices should be 2 ch possibly hdmi, bitstream, pcm, and auto. Try hdmi, 2 ch, and pcm because if you have it on auto you might not get sound via an hdmi cable and it's probably not bitstream but try bitstream if none of the others work.

Check HDMI Sound settings:
Enter Setup menu via remote, then Func. Setup / HDMI / Audio. You can choose from Amp (sound will be played via Yamaha), TV (sound will go straight via HDMI out to your TV and not play on Yamaha) and Amp+TV (Yamaha will play the sound and also pass it to the TV).
Also what is your source? DVD or some network player? For example Yamaha cannot decode audio in AAC or other computer formats, so be sure to change the audio settings of your player to output PCM and not raw/bitstream.

do you have the followwing settings in your player menu?
PCM
Bitstream HD
Bitstream Legacy
Bitstream Mixed

if you want DD, set it to PCM; if you want DD+, then you need to run HDMI cables and set it to Bitstream HD.

Before you buy anything try checking the AUDIO Settings in the Menu of Each Device (Mostly TV) and see if they are set to PCM or BITSTREAM. HDMI is mostly set to PCM while Optical is generally Bitstream. The TV may be set to the opposite of what it needs to be. I would try to get PCM to work first cause it is Better, If not then set what you can to Bitstream and it should pass. Also check in TV Menu for SOUND OUT or AUDIO OUT or SPEAKERS. Some TV's have a problem passing Audio through when they are already Outputting them to it's own Speakers! I Hope this Helps out!

get a reciever and then get componet cables then hook it all up through the hdmi cables

go in blue ray dvd menu as dvd is playing and select the audio out formatt u wann use has to be on 6.1 or least 5.1 digital not 2.o ch ok and u may be seding the digital with the hdmi outs not both be hard for it to do doe syour tv had digital opti out run that to reivciver on digital input ok tell blue ray options menu also digital oput bitrate ok

PCM is standard when using HDMI cables, you are passing an already decoded audio signal to the receiver and it outputs the sound and does nothing more. The reciever calls this PCM, your PS3, when pressing select should show that it is decoding the dolby digital HD. There is no quality difference in the two. PCM is the same because it is un compressed audio. So when using HDMI, no matter the signal that the movie or music is playing, wether it be dolby or DTS, you will see PCM when using HDMI.