Home studio issues

Hello!

I’ve made a studio in my basement, that I think sounds pretty much dead. However, I am really not happy about the sound that comes out of my monitors. (Adam A8H)

I don’t know if I am experiencing phase issues or what it is, but it just sounds muffled and off. The room is 5.60m in lenght, 3.5m wide, and 2 meters to the ceiling.

Will bass traps help, or what can I do to make the room sound more natural?

The monitors are 115cm apart and about 20cm from the back wall.