Thanks everyone for your advice.
There are some really good points here.
I have been looking at some room treatment options but I know I will be limited to what I can do in my living room.
Also speaker placement is bit limited for me, I don't have to many options.
I wouldn't say my system sounds bad or anything, I was just looking to see if it can be improved but I will have to play around with a few things as suggested and see if that makes any improvement.