You guys were not alone.
For all of 2nd round elims, the PA system speakers for the grandstands had their volume on 1 or 2.
We heard nothing!
At the end of the round, I saw Reinhart travelling to the tower from the top end. Noticed he was looking at each speaker as he drove by them.
I think he fixed the problem for us!(everyone in the stands)
Seemed like he made it to the tower and then the volume came back up.
Thanx Alan if that was you!