Do Atmos speakers really have "secret stuff"?

[2Sunny]

On the back of my Klipsch RP-500SA II speakers there is a switch labelled Atmos/Surr. As I have mine wall mounted I have the switch set to SURR as per the instructions I found online for the 500SA's, but just now I found this post on FB. Does anyone know if the FB post is true? If so it seems that the proper setting for the speakers should be Atmos if they are being used as heights and not surrounds.

"Sigh. This has to do with the psychoacoustic effect. Atmos speakers are not flat.
Read that again. Atmos speakers are. Not. Flat.
Dolby has a secret spec that they only release to the manufacturers. They have figured out which frequencies are more localizable to the human ear / brain. The atmos specs require manufacturers to include a dip for these frequencies. When a speaker hits these specs you will not see a typical +-3 db spec. That’s because it’s nowhere near that.
The switch exists to introduce this atmos spec’ed dip. When not in atmos mode you flip the switch and it is flat.
And you will not find exactly what this spec is in any manual because you know… secret stuff."

KLIPSCH | Ok the switch on the back of the RP-500SA II selects a LPF of 120Hz or 150Hz(atmos) | Facebook

Ok the switch on the back of the RP-500SA II selects a LPF of 120Hz or 150Hz(atmos). So just tellin i got info from Klipsch.

www.facebook.com

 

[kemmler3D]

I think having a different frequency profile for height vs surround could make sense, but if there is a secret, it's blown as soon as someone points a microphone at the thing. You could probably even characterize it with your phone if you wanted.

 

[GXAlan]

Not a secret. But requires license. The text actually talks about preferred embodiments in detail which is likely the actual spec.

https://patentimages.storage.googleapis.com/96/0e/16/cb2728d37eae6f/WO2014107714A1.pdf

 

[GXAlan]

 

[2Sunny]

Not a secret. But requires license. The text actually talks about preferred embodiments in detail which is likely the actual spec.

https://patentimages.storage.googleapis.com/96/0e/16/cb2728d37eae6f/WO2014107714A1.pdf

Forgive my being obtuse, but I assume that means the speakers in question should be set to "Atmos" even when hung on a wall in order to take advantage of the full Atmos intended effect coming through height speakers. Is that how you would interpret it?

 

[JustJones]

Hung on the wall they're surround. Flat on top the front R & L they're Atmos upfire. If you set them to Atmos on the wall the FR is the above wonky looking curve arriving at your ears instead of using ceiling bounce to adjust it before it arrives. I guess you could try both ways and see which you prefer but that's how they're intended to be used.

 

[2Sunny]

Hung on the wall they're surround. Flat on top the front R & L they're Atmos upfire. If you set them to Atmos on the wall the FR is the above wonky looking curve arriving at your ears instead of using ceiling bounce to adjust it before it arrives. I guess you could try both ways and see which you prefer but that's how they're intended to be used.

Thanks. I didn't click on the link, but the picture explains it all. SURR when hung on a wall; ATMOS when up firing. Thanks again.