This pastor's Minister of Music contacted me to help him in his response. The following answer is provided here because it is a question often asked and seldom understood. The hard part is the money. There are two issues to be addressed and both require an investment. A major component in the development of the type of sound heard in theaters is the room design.
Most film theaters are much smaller and acoustically dead.
That is to say the cubic volume of airspace in the room and the acoustical environment is designed specifically for this type of sound. This is a single-purpose room. Churches are generally designed for two different uses. First, there is the performance aspect of the building. More and more, churches are utilizing multiple types of music, productions, and even drama.