An audio system is provided, as well as a method of using same, which utilizes a plurality of sensors integrated into the vehicle's seats to determine which of the seats are occupied. The system selects a pre-defined optimum acoustic sweet spot from a plurality of stored acoustic sweet spots based on which seats are occupied and based on a set of acoustic optimization configuration instructions. The system automatically adjusts the left-right speaker balance controller and the front-rear speaker fade controller to the specific left-right speaker balance setting and the specific front-rear speaker fader setting defined by the optimum acoustic sweet spot. The acoustic optimization configuration instructions, which define the optimum acoustic sweet spot for each combination of occupied vehicle seats, may be stored in the system's memory by a vehicle manufacturer, third party, or end user.