Cheap/Fun experiment - Record your listening
We often talk a lot about room acoustics, and a lot of it is theory. Want to try something for free, where you get to be the scientist and reporter? Do this.
Play music on your system and record it with your phone. Maybe a song or two.
Then, listen to it with headphones.
Do you now hear the room??
Please post your findings along with your speakers and how much of the room you have treated.
There are no wrong answers, and no judge, and the only thing I'm selling is a shared experiment in psychoacoustics so please be nice. :)