How will Samsung TV sound with Beam?

Buy it and try it, but almost certainly an improvement. Sonos has generous returns periods in most countries. Check for your region, but you’ll probably have 30 days to decide if you like it. 

If you are worried about the TV and room size you may want to consider stepping up to an Arc or Arc Ultra while the holiday sales make the prices much better.

We have an older Beam (gen 1) in a 15x15 foot square room and it does a far better job than the speakers on the 50" Sony TV we have there.

Thank you all for your great advice. I do have a Sonos generation two sound bar I just bought a new Samsung TV, I have sky running through it and on the settings on sky I have clicked it to Dolby digital plus which it tells me to do, I believe I have the HDMI cables in the right place but should I already know a difference in sound or is it only when ultra HD channels are being shown on sky. Please advise thank you.

No clue a out ultra HD channels as I don't have Sky.

If you look at the "now playing" screen on your Sonos app you will see the format your TV is sending to your Sonos. If it is showing a surround format then you should hear sound from the surrounds if the source has any there. Always a bit iffy as many times we see 5.1 but there is no sound present on the additio al channels.

I've seen lists here for movies that have multichannel content, take a bit of searching but that might help if Sky has nothing available for testing.

How would you have your set up for best sound experience, I have a beam gen 2 and what does height level mean? Can someone advise if this beam has Dolby atmos please 

You can use the Trueplay option to adjust the speakers to your room before listening and adjusting. Try it on and off and use the option your ears like.

To adjust, sit down in your usual seating position. Pick a source that has good sound and in the format you want to use. Listen to it for a while and adjust it to make your ears happy.

If you want to adjust your system to please someone else’s ears there lots of suggestions out there, that just doesn’t make sense, but there they are.

Height Audio is a feature of Dolby Atmos, it adds a height/vertical component to the usual 5.1 single plane sound.

The Beam gen 2 supports virtual height channels, you have to get an Arc to get physical height drivers.