How TALL is the Event Opal image?

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I saw some of you reccomended the Event Opal on my other thread
I'm concerned that the elliptical shape of the waveguide of the Event Opal will make it so that the sound will change a lot if I stand up because of the reduced vertical sound dispersion. Is this the case? I know that's the case for all speakers, but do you find it to be more so with the event opal? How directional is the sound of the event opal overall?

 

[EvPa]

Well, if you want to do squats in front of them, rotating the tweeter might give you a better result.

(you are supposed to rotate it if you place them sideway)

Please note that I am going to sleep at almost 6a.m so this post might not be written with a clear mind.