@thespeakerdude , No it is not speakerdude. I measure everything I do and since when are line array characteristics just theory? They are very easily demonstrated. There are very few hard boundaries is acoustics, everything has a slope. For all intents and purposes line arrays beam severely in what is usually the vertical axis which is why you see them curved at stadium concerts. What is most important to me is that the subwoofers match the main speaker's line array attenuation characteristics as related to distance.
My audio room was also purposely designed for audio. There is not specific back wall. The room is open to the rest of the house eliminating to most significant reflection. The deviations that remain at the listening positions are easily managed by room control. Right at this moment I have three. You can have a listening position wherever you plant the measurement microphone.