The problem is that when you sit in your driver’s seat the sound from your front left speaker hits your ears before the sound from the right speaker does. The difference is very small but surprisingly humans are very good at hearing these differences and we use that difference to determine where the sound is coming from. What we do to trick the ears into thinking you are in the middle of the car is simply delaying the speaker output of your speakers so all the sound arrives at your ears at the same time. The effect is very nice as you feel like you are directly in the middle of the car. You’ll notice the vocals in the music now sound like they are on your hood singing to you.

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