The trailers are so loud I have to hold my hands over my ears until the previews are over. When the feature starts it is a little bit better.
I cannot believe that other people do not feel like I do. I have ear protection when firing a weapon that I will take to the movies in a Wal-Mart bag for now on.
I do not believe that there is a standard volume on all trailers that are controlled by the industry. I believe there is young employee that sets up the movie and thinks that louder is always better.