THX is a real-life sound system used for several movies. The noise is so loud it caused the room to shake, the fire exit sign to be smashed and a person's head to explode. When it was over, people were cheering, unlike Grandpa, who asked to turn it up. 



  • The deep note is the exact same deep note in the real logo.
  • THX executives liked the scene so much, that it was re-animated in widescreen and used as an official THX trailer in movie theatres.
Community content is available under CC-BY-SA unless otherwise noted.

Watch The Simpsons

Watch now
Available On