I've been in the business of tuning live sound systems. You never hear just the speaker, it's the speaker + the characteristics of the room that you hear. And different rooms color what a speaker sounds like. Trueplay compensates for the environment and puts the system closer to its intended frequency response, all while being easy for a consumer to do. It's well implemented. If you don't hear a big difference, it means you room just didn't change the frequency response much in the first place, which is a good thing.