the only experience i have with the 2.0 is at the tempe AZ redbull wakelab. You could hear that thing zip across even over the music, crowd cheers, and the announcer. I really strongly doubt this system is much louder if at all.
...but then again, the wakelab was quite some time back. maybe the newer 2.0 systems are quieter??
check this video piece i took from the wake lab.
skip to like the 0:30 mark
confirmed that i know the guy riding. gona have to ask him some more questions