Experienced only: What have you done with room correction?

I gave up and built a dedicated room to the specs of the U of Salford's School of Acoustics. I put record shelves and book shelves behind the speakers on the long wall and added 2 woofers. Magic!

I started updating my system 3 years ago.  After, i got all the components, one of the first things I bought was room panels.  I have two bass traps sitting behind the system, 6 first reflection panels, and 3 diffusers .  Room is 12 x 17x 8. Very good decision; I feel you can be changing out components trying to improve your sound when the next big bang for your buck is the room treatments.  My panels lowered listening fatigue, took to a much better place and improved sound stage.  I currently walk around the room and feel the sound doesn't change.  Many times you will have node cancellations whiere there is hardly any response at a given frequency range.  I do have one small bass peak in the left rear corner.  Bass is flat to 30Hz and good response in mid 20's.  There are several other things I have done to further refine the sound, but if I had done all that without treatment, I would be wondering why it doesn't sound right. 

PS  Eric has always been a proponent of room treatment and his posts/advise helped me make the decision to put up panels.  Thank you.

 Lyngdorf room correction transformed the sound of my Dali Epicon 6 speakers and Harbeth 40.1s in my systems.  Much improved bass, midrange clarity and overall musicality. 
 

The Lyngdorf room correction also improved the sound of my friends AudioVector R3s nicely in his room.  Tighter and more articulate bass as well as improved midrange clarity and refinement. 

I'm about to find out. I just took delivery of Legacy Aeris with Wavelet processor. I have high hopes.

I've used bass correction in situations where it's just a joke without it. Sometimes we don't get to move the speakers where we want. In at least some of those cases judicious use of room correction can make the listening experience dramatically more enjoyable. In the lower bass time domain issues aren't as big a deal to human hearing. My experience lines up with research I've seen on the subject. If the severe peaks and dips can be reduced with dsp it sounds better than not doing it even if it doesn't address some of the time domain issues. Above 100 Hz things change and time domain becomes very important. Thankfully, absorption becomes increasingly efficient and less costly as frequency goes up.