They did say "using the same VLF speakers in the LIVELab", suggesting it was in the same room where the concert was previously held, using the same speakers. I'

They did say "using the same VLF speakers in the LIVELab", suggesting it was in the same room where the concert was previously held, using the same speakers. I'd imagine that sitting alone in a room and heating three seconds of silence, 3.5s of EDM concert-volume audio, 1s of silence, and 3.5s of high volume audio would be pretty disorienting, perhaps they played it too quietly to engage the speakers?