I have a 10' by 10' room and the fact that it is square presents a huge problem. So for full range speakers bass traps are a must.
Another solution (which in most cases including mine is unreasonable) is to position the speakers kitty corner so the room becomes a diamond shape rather than a square. This works best with bookshelf speakers. Most important is to cover windows and the area behind the speaker. That made the most difference in my room and I simply threw a comforter on the wall. It works.
Don't give up though it can be frustrating at times.
Another solution (which in most cases including mine is unreasonable) is to position the speakers kitty corner so the room becomes a diamond shape rather than a square. This works best with bookshelf speakers. Most important is to cover windows and the area behind the speaker. That made the most difference in my room and I simply threw a comforter on the wall. It works.
Don't give up though it can be frustrating at times.