The sound system is equally important as the projector. You will want at least a 5.1 surround sound system in the room, if not a 7.1. In smaller living rooms, you can go with a 2.1 system, but you won’t get the overall surround sound feel. You will also need to consider speaker placement. You need to ensure that the speakers surround the seats properly. So you want your front speakers in the front, 2 speakers on the side, and 2 speakers behind the seats, that set-up is ideal for a 5.1 channel surround system. For a 7.1, you will have 2 more speakers so you can work them between the speakers on the side and the back. Make sure the speakers are at least 8 feet away from the seats, facing towards them, and not too close to the walls. This will allow enough space and direct throw of sound to where you will be seated for amazing sound quality.