The sound transmission was faulty, probably due to microphone placement. The orchestra was too loud, and the singers weren’t loud enough. Very disappointing, because this was a terrific cast and production. At the beginning of the third act, the subtitles screwed up, too. The “ Lohengrin” titles were overwritten by some other program altogether. The subtitle snafu was temporary, but the sound problem (orchestra overmiked, singers undermined) existed through all five hours of the performance.
The sound in the theater was too low.