A home theater is an entertainment system designed to reproduce the quality of theaters and cinemas and experience it within the home. In a broad sense, a home theater is not strictly limited to having a high-end projector and audio devices. Actually, in most homes, a home theater simply refers to a setup composed of a large TV, a DVD player, and some speakers. Custom built home theaters do exist in some homes, especially by those in the upper levels of society. Custom home theaters usually have a high end video projector, a top class DVD player, equalizers, amplifiers, multiple speakers and a subwoofer. The worst we can imagine after all the trouble of setting up a home theater is that it will not live up to our expectations. Thus, it is important to avoid some of the common mistakes that could happen while setting up a home theater. Here are some reminders to keep everything in check. Make sure to have enough home theater seats for people who will use it regularly. Not having enough seats can be a problem. If you expect visitors to come often and use the room, getting one or two more seats for them would help and make the activity comfortable and enjoyable.