For the tour, U2's sound system has been moved to the venue ceilings and arranged in an oval array; the band hopes the change will improve acoustics by evenly distributing sound throughout the arena.
U2's sound system has been moved to the venue ceilings. This was for the tour. U2's sound system has been arranged in an oval array. This was for the tour. The change will improve acoustics by evenly distributing sound throughout the arena. This is what the band hopes.