When we are configuring an "Ultimate" system, we refer to achieving highest level of value and satisfaction that emotionally resonant and lasting impact to the listener. Designing the ultimate live band PA sound system for a church involves several considerations, including the size and layout of the sanctuary, the type of music performed, the number of musicians and vocalists, and the acoustics of the space. 

Our design involves prioritizing the needs of the congregation and the performers with an immersive and engaging worship experience that allows the message within the music performance to be clearly delievered to the audience. To achieve this Digital signal processing (DSP) will be a crucial tool for optimizing the sound quality of the system. DSP tools  are used to tune the room, reduce feedback, and control the dynamic range of the music being performed. This can include using venue correction software to adjust the frequency response of the speakers and applying equalization to eliminate unwanted resonances.

In summary, this ultimate live band PA sound system for a church requires a deep understanding of the technical aspects of sound production. Sound engineers should carefully consider the mixing console, speaker selection and placement, microphone selection, DSP tools, and cabling and power management to create a reliable and high-quality sound system for the church.