The repeatable story
Say that we are at High End expo with a lot of participants and all kind of music. We, at ESR ACOUSTICS we have a stand with just few R1. There are many companies with demo audio systems from ''normal'' systems to huge and very heavy systems . There are some companies with audio analyzers systems with real time functioning.
At a certain moment, our stuff is introducing in the room a nice metallic frame with some 28 R1 grouped as 7 x 4 R1, meaning 28 R1, where 7 R1 are mounted horizontally and 4 vertically. Suddenly all analyzers are indicating some + /- 3 dB from 20 Hz to 20.000 Hz everywhere in that room.
Many don't believe, searching for wires or some ''arrangement'' with the people from other companies. But there is no trick or electronic manipulation. What is happening is purely in the acoustical domain.
This is not a scene from a science fiction movie but the reality