Stage X Center Channel dispersion

[Htguy]

I see that the Stage X is a 30 degree horizontal dispersion but what is it is vertical dispersion. Is it only the 7.5 inch panel dimension in regards to the 400 hz to 2700 hz range that the ESL covers.

What about above 2700 hz as covered by the ribbon tweeter. What is its horizontal and vertical dispersion.

 

[MPS]

I see that the Stage X is a 30 degree horizontal dispersion but what is it is vertical dispersion. Is it only the 7.5 inch panel dimension in regards to the 400 hz to 2700 hz range that the ESL covers.

What about above 2700 hz as covered by the ribbon tweeter. What is its horizontal and vertical dispersion.

Generally speaker directivity depends on size of the driver versus frequency, larger driver at a given frequency has higher directivity than smaller driver and vice versa.
So wide but low driver would have less vertical directivity than horizontal.
Typical ML panels are much higher than wide so they will radiate more horizontally than vertically.
Then other thing is direct field of the driver, which is bigger and longer the larger the driver. Everything is of course relative to the frequency.
Actually almost simple when you think of it