Crimson Sword. I'll post measurements on my next post for you. I read lotsa forums on upFiring speakers. I also have a 5.1.4 Atmos system with AVR, Front upFiring speakers Klipsch rp500sa and Rear upFiring Focals. From forums after EQ____ peoples are uping the upFiring speakers by +3DB to +5DB or more. Depending on ceiling proerties.
Watch 4K Atmos discs GooseBumps 1 and Goosebumps 2. Lots panning left right, front back of Atmos objects. Lots object hits positional from top of atmos bubble. Amazing Reference Atmos here to tune your Atmos Bubble. Goose Bumps 2 is a must must buy. An important observation I learn is while watching Atmos Ref movie... know when at movie object ceiling hits occurs. Put your ears near top of upFiring speaker plate. You hear how loud it is. Then go sit at your MLP. If seated at your MLP you can't hear very well those Atmos objects you know that upFires... Then up the AVR DB for those upFiring speakers. If you hear some overhead frequencies at speaker face plate but not at MLP... then up the relative DB for the Atmos speaker at AVR. ie, coins rattaling, missles, bullets, helecopters, etc. These are relative loudness Atmos object DB adjustments relative to regular 5.1 surrounds loudness. Fine tune so you can hear very well both. You know whats suppose to come out from upFiring speaker for you had your ears near its face plate. See if those sounds bounce well from ceiling to mlp. Also where they hit on the ceiling, Aka Atmos bubble. Know this. Just increasing volume from AVR Remotes +vol, -vol won't do IT!!! For increase volume from 5.1 surrounds speakers will dround out increase volume from up firing speakers. THUS the need to up relative DB for upFiring at AVR's DB Level menu. Thats why on my Sony 5000 my upFiring DB is +6. But my 5000 surrounds DB is quite low relative. Results for me by my ceiling properties is balance in subs, surrounds, upFiring sounds. And as I increase vol by Sony 5000 remote... Those aforementioned 3 remains in balance. Yes I can hear sony 5000 Atmos ceiling hits from locations one feet in front of me the MLP. Even to sides of Atmos top bubble one feet in front of me. You need to tune your upFiring 5000 speaker at max DB relative. Then lower its DB LASTLY Later to balance all if necessary.