Please help.. low volume on blu ray player-soundbar

[AKORIS]

I've researched this everywhere and cannot find an answer but there's got to be a solution.

I have a 65" SUHD Samsung 4k TV. It's got the dangly input box where everything gets connected to it... cable box, blu ray players, etc.

Recently I bought a SONY soundbar for my system. Costco model # HT CT790.

The sound is rich and pleasing but............

The volume is 2 times louder on the cable box versus my blu ray players. The volume goes to 50 on this soundbar and at 20-25 the TV volume is ultra loud... not the case on both of my blu ray players. I can MAX the volume at 50 and still there are times I would like it to be louder.

I am using the ARC connector on the input box from the soundbar. I am using a single HDMI connector as well as an optical cord (I have experimented both with the HDMI only as well as the optical only).

I have switched to every combination I can think of from PCM to DDS to DTS, etc... as well as switching HDMI cables. Nothing changed the lack of volume from the blu ray players...

It doesn't make any sense to me since everything is connected from one source (TV) to Soundbar... why would the TV have such higher volume???

Desperate for any input!!