M i suffering for cathedral effect?

[alandbush]

Im a bit confused.
Got 2 golds dont know for sure if im suffering this echo filling or just two setup give this affect.
https://youtu.be/GUf90HR9P8Y

Please advise.

I’d be inclined to report the issue to Devialet customer care, regardless.

If you have a doubt, why torture yourself.

Any update shouldn’t make it worse.