Two of the most important things you would be asking to have the best sound effect. Where will the event take place (indoor or outdoor)? How many people will the event include? Outdoor We need several watts (depending on the world), and we have to be careful that the sound breaks apart from the main target of our audience, especially if air (even a little) blows. Indoor Here things are a little easier. We need fewer watts (depending on the world) and we have to pay attention to the reflections of the sound in space.