Your quick 11 point checklist for AV There are many factors when it comes to AV tech during your event. It's important as event producers to remember that AV is also a part of the overall picture. I am sure that a portion of you have seen these issues at one time or another. We have gathered a list of 11 “uh-ohs” that you should watch out for. Understand your Aspect Ratio for your equipment and content Each setup is different. Most traditional screens are either 16:9 or 4:3.