SGavin

lol

It's called High Frequency Directivity. Higher frequencies tend to be very directional, therefore, if you move away from the cab, you hear less high end. Low frequencies are the opposite and this is why you can hear the bass from someone's car stereo so well at a stop light. Aiming speakers at walls is a live sound technique. Sound guys sometimes put there subs backstage in a corner of the room so its energy is coupled to the walls of the room.