Is that your room in your profile picture? Lot of glass? Have you tried the test with the PS Audio power removed?
What are ways to fix speaker dips in my speaker or audio room
I have recently hired an acoustic engineer and after a day of measuring room acoustics and he came back with what I needed to fix and one of my speakers dip at 54 HZ and would DSP help or a lot of bass traps in the frequency work better?