In this instructable I will cover phasing of speakers. This is designed to be just a introduction to phasing, some phasing techniques are very advanced, however, I will show you what I think is the easiest way to think about phasing.
Step 1: What is phasing?
Many people might ask: "What is phasing?". That can be very difficult to explain, but I will do my best. When you produce artificial sound from multiple sources, you always run the risk of being out of phase. What I mean by out of phase is this: one source is "contradicting" what the other source is doing. When a speaker produces sound, it is vibrating back and forth. When you phase a speaker, the idea is to have both speakers moving in the same direction.