I moved my system from its usual room to a larger room expecting it to soar, and had the same as you - all the bass energy and drive disappeared. For various reasons it can’t be in the bigger room anyway so it went back to its smaller cell until this week when it had another run out in the bigger room. This time with more careful positioning of speakers etc it was a lot better, still not great but listenable.
Try some judicious speaker repositioning as a start. There was a thread on here recently all about that, I’ll have a look and put the link up shortly.
Found it. Speaker Placement thread.