Room correction has come of age and is a great way to fine tune your system in your room to get smooth frequency response. It can help tame low frequency anomalies due to how the speaker interfaces with the room. Some issues need acoustic treatment, some can be helped with EQ. The conventional wisdom says to not EQ above the Schroeder frequency.
https://www.soundandvision.com/conte...nd-tell-part-1
https://www.soundandvision.com/conte...nd-tell-part-2